How To Replace Gas Valve On Water Heater?

Replacing a Water Heater Gas Valve – Tips and How To

  1. Learn how to remove and replace a water heater gas valve in just a few simple steps by watching this video.
  2. How to modify the temperature on the gas control valve in a safe manner.
  3. This page will discuss the three most common and widely used gas valves: White Rodgers, Robert Shaw, and Honeywell.
  4. These valves are all used in water heaters that employ the pilot light element, including atmospheric, direct, and power-vent water heaters.

AO Smith, Rheem, State, American, Bradford White, GE, and Kenmore are just a few of the popular brands whose heating systems include these three kinds.With a thermostat, you can control the flow of gas.It is one of the most significant components of a water heater, and it is positioned in the bottom region of the gas heater as part of the manifold/burner assembly, which is part of the manifold and burner assembly.It is delivered with a number of components connected, including a manifold tube, a pilot tube, a temperature probe, a high limit probe, a thermal fuse, a piezo igniter, and a thermocouple, among others.Some valves have two or three buttons/knobs; one controls the flow of gas, another controls the temperature, and the third controls the activation of the pilot.The temperature may be set, adjusted, and controlled from here.

You can also start or stop the heating.The gas valve is critical in the heating process since it is directly responsible for your safety and the appropriate operation of your heating system.

How a gas water heater works

  1. The cold water for gas water heaters comes from a cold water supply as well as the dip tube on the tank.
  2. Using a thermostat probe that is integrated into a gas control valve, it is possible to determine how hot or cold water is in the tank.
  3. When the thermostat dial is adjusted to a temperature that is greater than the temperature of the water, it sends a signal to the gas control valve, which opens the gas valve.
  4. Water heaters with a pilot light need you to turn the knob to the pilot position.

Once this is done, the water heater will get an uninterrupted gas supply, regardless of whether or not the thermostat is calling for heat.For its part, the gas valve will only open when there is a demand for heating to allow gas to flow to the gas burner.As the gas is delivered to the gas burner, it is ignited by the pilot light, and the heating process is initiated.The thermocouple, which is a component of the pilot light assembly, is responsible for ensuring that the flame is still there.If this is not the case, the unit shuts down the unit and ceases the gas supply.The thermocouple is designed to provide a little amount of electrical current (measured in millivolts) to the gas valve and its electromagnet in order to maintain the valve’s open position.

After reaching the temperature set on the thermostat, gas flow and, therefore, heating are both turned off.

How to remove a gas control valve

  • Make a counterclockwise turn of the gas control valve on the heater until it is in the OFF position (counter-clockwise for the Honeywell model). If you have a water heater with a White-Rodgers gas valve, you must depress the knob before moving to the OFF position
  • otherwise, the water heater will not work.
  • Manually turn off the gas supply to the unit by turning off the manual shut-off valve that is positioned beside the heater
  • Turn off the water supply valve.
  • Remove the water heater’s tank
  • Disconnect and remove the piezo igniter, manifold tube, pilot tube, thermal switches, and thermocouple, taking care not to damage the threads in the process. Remove the piezo igniter and manifold tube. It is the right-hand thread that is used on the thermocouple, whereas it is the left-hand thread used on the manifold tube, for example.
  • To unscrew and remove the valve, insert the threaded pipe into the inlet of the valve using the right size threaded pipe. It is best not to use the pipe wrench to hold the valve. For the sake of preventing harm to the inlet or outlet, it is imperative that no items are placed within.

How to replace a gas control valve

  • When putting the gas valve on the water heater and reconnecting the gas tube, use Teflon tape or pipe compound that has been approved by the manufacturer.
  • The threaded pipe is used to screw the valve back in place, but be careful not to overtighten it, as this may cause the valve to fail and the gas to leak.
  • Reinstall the piezo igniter, manifold tube, pilot tube, thermal switches, and thermocouple (pay close attention to the thread direction)
  • and
  • Inspect the combustion chamber to ensure that nothing has been left behind that might interfere with effective combustion, such as dirt or debris that could enter the gas valve and cause it to malfunction. Make certain that there are no fractures, loose connections, or other problems.
  • Fill the water tank heater with fresh water and run the hot water tap for few minutes to flush out any remaining air
  • Gas leaks should be checked on the gas valve. To clean any gas connections, add a foaming soap/water combination to a sponge and wring it out well. If you notice any bubbles, there is a leak, and you should make the necessary repairs.
  • To begin the water heating process, follow the lighting instructions given on the heater (label) or in the user manual.
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Adjusting the temperature

  1. A gas control valve is fitted with a temperature dial with multiple settings, which allows the temperature to be changed from its lowest to its highest setting, depending on the situation (cold and hot).
  2. It features the most cost-effective and secure setting, which is around 120 degrees Fahrenheit.
  3. When in vacation mode, there is no need to switch off the device since it will maintain the minimum temperature and avoid any potential difficulties from occurring.
  4. Gas water heaters are factory set at 120-125 degrees Fahrenheit, which is the safest setting for children.

The makers’ suggested temperature is between 120 and 140 degrees Fahrenheit, making it excellent for showers and dishes.The temperature rises in the clockwise direction, whereas it falls in the counter-clockwise way.Regardless of the setting you choose, the water heater will keep the unit turned off at that temperature unless you modify it.One key point to remember: if the gas valve on your water heater is damaged, do not attempt to fix it; instead, replace it.It is much better if you contact a technician for assistance.According to the makers, this component is not ready for use.


  1. When the gas control valve is not functioning properly or is experiencing issues, the most often heard complaints are ″no hot water″ and ″not enough hot water.″ Always check to see if there is a disturbance in the gas supply or if there is an issue with the pressure before beginning any work.
  2. The thermocouple or gas valve may be malfunctioning if you followed the manufacturer’s directions to ignite the pilot but the flame did not remain lit after you did.
  3. If these pieces are functioning as they should, inspect the pilot tube and orifice for obstructions, which may be present.
  4. Do not attempt to repair the gas control valve, no matter what happens to it.

If the pilot button becomes stuck or does not want to spin, or if the high limit switch is triggered, do not attempt to repair the valve.Purchase and install a new one whenever possible.If you are not confident in your ability to replace a gas valve or are unsure of how to deal with the situation, it is suggested that you seek expert assistance.

How to Replace Your Water Heater Gas Control Valve

  1. Please keep in mind that this content may contain affiliate links.
  2. This means that, at no additional cost to you, we may gain a small profit on purchases made via our links.
  3. A malfunctioning hot water heater thermostat, a faulty gas valve, a pilot light that won’t light, and a tripped heat limiter are all examples of water heater problems that might be caused by the gas control valve in your home.
  4. What you need to know about changing the gas control valve on your water heater is outlined below.

What Does A Water Heater Gas Control Valve Do?

  1. In this case, the gas input is connected to the gas control valve, which regulates the flow of gas into the unit, as the name says, via the unit.
  2. The pilot is fired by the gas control valve, and the thermocouple is heated by the pilot that has been ignited.
  3. Upon reaching a certain temperature, the thermocouple in the water heater transmits a signal to the gas control valve, which permits the burner to begin operating and heating the water contained in the tank.
  4. There is another device projecting from the control valve that, in addition to the thermocouple and thermostat, detects when the water is too hot and turns off the valve to prevent the tank from reaching a critical heat limit and causing significant damage or injury.

Gas Control Valve Troubleshooting

  1. Performing a troubleshooting procedure on the gas control valve will allow you to discover whether the valve is malfunctioning or whether a problem exists with the thermostat, heat limiter, pilot light, or even the gas burner.
  2. First, look for problems with the other components before concluding that the gas control valve is broken.
  3. Gas control valves do not fail on a regular basis, although they can malfunction in unusual circumstances.
  4. The thermocouple is more likely to be the source of the problem, and it is quite inexpensive to replace.

Although it is possible to repair simply the problematic component in the case of a malfunctioning thermostat or heat limiter, it is often easier and only slightly more expensive to replace the complete gas control valve.It is necessary to replace a heat limiter that has tripped due to excessive heat.However, it is possible that changing the heat limiter may not solve the initial problem.Despite the fact that the limiter may be replaced, the failure most likely implies a problem with the thermostat or gas control valve as well.

How To Replace A Gas Control Valve

  • WARNING: Natural gas may be highly dangerous to deal with, and it is always recommended that the gas be turned off before attempting to repair a natural gas water heater. If you are uncomfortable working in such a hazardous atmosphere, you should seek the assistance of a skilled contractor. The replacement of the gas control valve on the majority of water heater types is pretty straightforward. Using an open faced or adjustable wrench, disconnect the lines that are linked to the gas control valve after the gas has been turned off. Keep the water heater firmly in position when applying tension to the connections, or you risk causing more damage to the appliance. Take the original valve with you to the hardware or gas supply store so that you may purchase a replacement that is a perfect fit. Connect the new valve in the opposite direction of the old one. You should relight the pilot and check to see whether the water heater is operating correctly if you do not notice any gas or a rotten egg stench. It is possible that newer versions have wires attached to the gas control valve. These cables are linked to a thermal fuse in the burner compartment, which, in the case of a flash fire, will shut off the gas to the water heater and shut down the entire system. The presence of these wires indicates that the valve is critical, and they must be reinstated when the valve is changed. Remember to seek expert assistance if you aren’t completely comfy with any aspect of the gas control valve replacement process once more. Replace the pressure relief valve on your water heater
  • replace the drain valve on your water heater
  • and other related topics.

How to Replace a Gas Control Valve on a Water Heater

  1. Your home’s water heater may be malfunctioning due to an issue with the gas control valve, which can be identified by the following symptoms: The water may not be heated properly or to the desired temperature (including situations when the water is excessively hot), in which case this may occur.
  2. It is possible that there are other explanations for this problem; however, if you determine that a malfunctioning gas control valve is to blame, you can replace it.
  3. All you require are a few simple tools and a set of instructions to get you started.

Step 1 – Inspect the Water Heater for Other Problems

  1. Examine the appliance to determine if there are any other issues that might be causing your water heater to malfunction.
  2. As an example, there might be an issue with the amount of water that is being delivered to the heater.
  3. If the amount of water is insufficient, the water may overheat.
  4. Additionally, dirt or debris accumulation in the heating chamber, as well as other malfunctioning components such as the thermocouple or the thermostat, might result in improper temperature regulation.

In comparison to other sections of your water heater, the gas control valve has a lower failure rate, and it is also less expensive to replace it than it is to repair one of the other problems.

Step 2 – Assemble the Materials

  1. Preparation begins with gathering the items you’ll require and donning your protective gear.
  2. You should bring the old control valve with you when purchasing a new gas control valve from a hardware or home supply store.
  3. This will ensure that the new control valve will fit properly.
  4. This assists you in obtaining the proper equipment that is compatible with the design of your unique water heater.

Step 3 – Shut Off Gas

  1. To turn off the gas supply to the water heater, turn the gas control knob to the ″off″ position.
  2. Check to see that the gas control valve is also turned off to ensure that no gas is entering into the heating equipment.
  3. Continue to keep an eye out for gas leaks, even if the weather is fine.
  4. As soon as you notice a strong smell of gas in the room, call the gas company right away to get the situation fixed.

Step 4 – Shut Down Water Supply and Empty the Tank

  1. Finding and turning off the cold water supply knob will prevent the flow of cold water to the heating system from being restarted.
  2. It makes it easy to drain the tank before you begin the repair work, which saves time.
  3. To drain the water from the heating tank, use buckets of the proper size to do so.
  4. Before checking and disconnecting the discharge line, make sure the water heater is completely depleted.

Step 5 – Remove the Old Valve

Remove the old valve from the heating system by removing it with a pipe wrench. If necessary, pliers or a screwdriver can also be required to open the tank, depending on its design and construction.

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Step 6 – Fix New Gas Control Valve

  1. Attach the replacement valve by reversing the procedure that was used previously.
  2. Wrap a piece of pipe tape over the threads of the valve and secure it in place by hand first.
  3. Then, using the pipe wrench, pliers, or a screwdriver, tighten it the remainder of the way.
  4. Make certain that everything is tight and secure in order to avoid any leaks.

After that, reconnect the discharge pipe that had been detached and secure it into the valve outlet.It should be noted that not all water heating systems are equipped with this component.Finally, turn on the water supply to fill the tank, and then turn on the gas valve and turn on the gas knob to allow the heating system to begin operating properly.Check the gas pressure and be on the lookout for any leaks.If you don’t notice any issues, you may be assured that your replacement was a successful operation.

Water Heater Gas Valve Information

  1. Testing the milivolts of a water heater’s gas valve can be used to diagnose the problem; however, you can test a gas valve without the use of a meter.
  2. The following instruction will demonstrate how a gas valve operates, as well as what it should do and when it should do it.
  3. Once you understand how it works, you can determine the source of the problem.
  4. Control valves, gas thermostats, and gas control valves are all terms used to describe these valves.

How they work

  1. The gas valve regulates the operation of the pilot light and the temperature of the water.
  2. When the pilot is lit, the button on the valve is pressed, and a little amount of gas is supplied to the pilot head through the pilot head.
  3. After the pilot is ignited, the thermocouple will be heated by the pilot.
  4. In order for the control valve to function, a tiny electrical current will be sent from the thermocouple.

As soon as the current is received by the gas valve, an electromagnet will activate a safety valve, which will allow gas to continue flowing to the pilot.At this moment, the pilot button can be depressed to end the flight.The pilot will continue to burn for the foreseeable future.Two probes protrude from the rear of the valve, one on either side of the valve.The shorter probe is intended to serve as a safety device.If the thermostat fails to work properly and the water continues to heat, the probe will cut off the gas supply.

A high limit probe is what this is referred to as.The temperature probe is the longest of the two probes.In response to the temperature changes in the water, a rod within the probe pulls a lever in the gas valve, which turns on and off the gas according to the temperature setting.

Different Styles Of Gas Valves

  1. The temperature probe and the limit may be seen in this photograph.
  2. The pilot button on this gas valve is built into the control knob, making it easy to use.
  3. Some valves feature a separate knob for the pilot, which can be useful.
  4. The pilot button on the valve is located on the opposite side of the valve from the control knob.

Before the pilot button may be pressed, the control knob must be adjusted to the pilot position on the control panel.This control valve is used on a more recent kind of water heater (has a sealed burner compartment).Take note that it is the identical sort of valve that is found on the older style water heater seen in the photo above.An unique control valve distinguishes this newer-style water heater from others of its kind.Take note of the two white wires that protrude from the bottom of the valve.The wires are linked to a roll-out switch to complete the circuit (thermal fuse).

As soon as there is a flash fire in the burner region, this switch will turn off both the gas burner and the pilot light.In order to wire up the roll-out switch, you would need an exact replacement of this valve in order to replace it.

Gas Control Valve Troubleshooting

  1. The limit and temperature probe may be seen in this photograph.
  2. Integrated inside the control knob of this gas valve is the pilot button.
  3. For the pilot function, some valves include a separate knob.
  4. In contrast to the control knob, the pilot button on the valve is independent.

Before the pilot button may be pressed, the control knob must be adjusted to the pilot position.In a more recent model of water heater, this control valve is found (has a sealed burner compartment).Keep in mind that this is the same sort of valve that is found on the older-style water heater shown in the photo above.With an odd control valve, this is a newer-style water heater.Please take note of the two white wires that emerge from the valve’s bottom.There is a roll-out switch that is attached to the cables (thermal fuse).

The burner and pilot light will be turned off if there is a flash fire in or around the burner area.In order to wire up the roll-out switch, you would need to replace this valve with an exact replacement in order to do so.

Water Heater Temperature Control

  1. The temperature of the water in a water heater can change significantly without the need to adjust the temperature control.
  2. Typically, when the thermostat for a gas water heater is positioned at or near the bottom of the tank, the water at the top of the tank (which is the water that is pulled from the tank when a faucet is turned on) can be 20 to 30 degrees hotter than the water at the bottom of the tank.
  3. This is caused by a lack of riding time.
  4. This indicates that only a small amount of hot water has been consumed, causing the thermostat to turn itself on.

It has been dropped at the bottom of the tank near the thermostat, and it is now cold.As a result, as this water is heating, the temperature in the tank’s uppermost section is increasing.If you notice that your water is becoming much hotter at times, this is most likely the cause and not the water heater gas valve.Okay, with that stated, it is possible for water heater thermostats to malfunction.You should turn down the thermostat to its lowest setting if your water is excessively hot and you can hear the burner operating.If the burner continues to operate, shut off the gas supply and replace the gas valve.

Unless the pilot light is lighted, you have a full tank of cold water, the thermostat is set to high, and the burner does not ignite, either the burner orifice is clogged, or the water heater gas valve is faulty, the burner orifice should be cleaned or replaced.Remove the burner component from the oven.The orifice is positioned at the end of the burner supply line, just beneath the burner, and it allows gas to pass through.Also, make sure the burner supply line is working properly.

Other Water Heater Gas Valve Problems

  1. It is not possible to fix a gas valve on a water heater.
  2. It is necessary to repair a valve if it malfunctions.
  3. If the pilot button does not come up when you release the button, turn off the gas and replace the gas valve with another one.
  4. If the control knob won’t turn, don’t try to force it to turn.

Replace the valve with a new one.If the gas valve has been shut down due to the high limit, the valve must be replaced.It is not going to reset itself.A failure of the thermostat will only result in excessive water temperatures, in which case the gas control valve will need to be replaced regardless of the cause of failure.

Safety Advice

  1. If you aren’t familiar with how to operate with gas, it can be highly risky to do so.
  2. At the same time, if you know what you’re doing and follow all safety regulations, it’s a safe material to work with.
  3. If you do not feel 100 percent sure and do not comprehend the safety precautions, please get assistance from a trained professional.
  4. Always inspect gas lines for leakage once they have been reinstalled.

The use of soap and water is effective.Spray it on all of the connectors and keep an eye out for little bubbles to emerge.If you do notice bubbles, tighten the connection and run the test one again.Before lighting a pilot, take a step back and sniff the area around the water heater to determine if there is any gas.Kneel near the gas valve and use your nose to detect gas.If you smell gas, discover the source of the leak and fix it, or contact your gas provider.

Don’t even think about trying to light the pilot.Never turn on a water heater burner while the access panels are still closed.A water heater’s gas valve should never be tapped or hammered.Return to the top of the page

Furnace Gas Valve Replacement: DIY Guide

  1. In the event that your home is equipped with a furnace, it is critical to prioritize its maintenance.
  2. Because if you do not follow these instructions, your furnace may become inoperable, leaving you without heat or hot water in your house.
  3. When it comes to the summer months, this may not be a huge concern, but when it comes to the winter months, a lack of heat may be quite harmful.
  4. It can not only cause you and your family to live in a cold house, but it can also cause your pipes to freeze and even break, causing significant damage.

In the event that they are not adequately maintained, fireplaces might pose a health risk.This is due to the fact that a furnace that has not been properly maintained becomes more prone to catching fire or leaking gas.As a result, it is critical that furnace maintenance be given top importance.In the event that you detect a problem, such as that the gas control valve is no longer operating correctly, it is critical to address the problem immediately and thoroughly.Let’s take a closer look at the gas valve, which is an extremely vital component of a furnace.It is necessary to utilize a gas valve in order to apply the gas pressure that is received by the furnace, as well as to offer certain safety measures.

It is critical that the gas valve be in perfect working order since it is responsible for controlling the flow of gas in order to prevent fires and explosions.Also critical is that it is in excellent working order because if it is not, the furnace will not receive enough gas to operate as efficiently as it should.Important to note is that the gas valve can detect when the gas has been heated, which is critical to understanding how it works.When gas flows from the valve to the pilot light, it ignites as it passes through the pilot light.The gas valve detects the change in temperature of the gas and shuts off the gas supply when a certain temperature has been achieved.

This helps to reduce the likelihood of fires and explosions occurring.In this case, if you find a problem with your gas valve, it is critical that you have it repaired or replaced immediately.While you may hire a professional to take care of the problem for you, you might save money by doing the task yourself and changing the valve.

To assist you in accomplishing this, the following is a step-by-step breakdown of what you must do:

Get the Necessary Tools and Equipment

  1. The first step in replacing the gas valve in your furnace is to ensure that you have the appropriate tools and equipment.
  2. If you don’t already have a toolkit, you’ll need to purchase or borrow one to complete your project.
  3. If you’re in the market for a toolkit, you should go online rather than visiting your local hardware store because you should be able to get a decent bargain on one.
  4. Taking the time to locate the proper valve replacement will also be necessary.

Unless you can locate an identical replacement for the old valve, it will not fit the furnace properly and may result in gas leaks.This has the potential to be quite hazardous.Gas valves are not just available in a single size; there are a variety of different types, models, and sizes to pick from.The most effective technique to verify that you receive the correct valve replacement is to simply order an exact replica of the old valve.(The valve’s manufacturer and model number should be printed on it someplace.) You should be able to locate this at your local hardware shop, or you could order it online for a more affordable price.To avoid disappointment, double-check your selection of valve size and model before making a purchasing decision.

You will not be able to utilize it if this is not the case.

Have an Electrician’s Number on Standby

First and foremost, obtaining the necessary tools and equipment for changing your furnace’s gas valve is essential.If you don’t already have a toolkit, you’ll need to purchase or borrow one to complete your project successfully.If you’re looking to get a toolkit, you should go online rather than visiting your local hardware store since you should be able to find a reasonable offer.Taking the time to locate the proper valve replacement will also be required.Unless you can locate an exact replacement for the old valve, it will not fit the furnace properly and may result in a gas leak.

This has the potential to be quite harmful.Unlike other types of valves, gas valves are available in a variety of different sizes, shapes, and models.To guarantee that you receive the correct valve replacement, it is better to just buy an exact replica of the previous valve.

(It should have the valve’s manufacturer and model number printed on it.) You should be able to locate this at your local hardware shop, or you may order it from a website for a cheaper price.To avoid disappointment, double-check your selection of valve size and model before making a purchase!You won’t be able to utilize it until you do so in this manner.

Turn Off the Gas Supply

One of the first things you should do is shut off the gas supply.If you leave the gas supply turned on, you run the risk of causing gas to seep into your home, which may be quite hazardous.Turn off the gas at the mains and then, just to be extra safe, turn off the gas supply to the furnace as well.Using this method, you will prevent any gas from escaping out while you are replacing the valve.If you notice a gas smell, exit the room and open the windows and doors to get rid of the odor immediately.

There might be an issue with the gas supply if the gas smell doesn’t start to fade after a few minutes of being outside.If the gas smell persists, it may be worthwhile to bring in a professional to come and assess the situation.Gas may be lethal, therefore it’s critical that you act quickly if you suspect that gas is leaking into your residence.

Remove the Gas Valve

Following your confirmation that the gas has been turned off and that there is no leaking, the following step is to remove the gas valve from the furnace and store it safely.You’ll need to unscrew the valve using a wrench in order to accomplish this.Keep it as mild as possible, since you don’t want to harm the fitting by rubbing it too hard or too often.Movements should be mild yet strong in order to avoid any harm to the joints and muscles.Once the gas valve has been loosened to a satisfactory degree, it may be manually removed from the system.

You should not attempt to pull the valve or apply excessive pressure to it if for any reason you are unable to get it loose on your own.If you are unable to free it on your own, it is generally preferable to enlist the assistance of a professional contractor.If doing so would avoid further damage to the pipes or fittings, it will be well worth the investment.

Attach the New Gas Valve

After you have removed the old valve from the furnace, you may attach the new valve to the furnace.It is preferable to use a wrench or a pair of pliers for this task.When connecting the new valve to the furnace, keep an eye on the pipes that it is connected to to ensure that nothing goes wrong.The last thing you want to happen is for them to become twisted, since this might cause the furnace to malfunction.Therefore, be sure to keep a check on them to ensure that they aren’t becoming tangled.

As soon as the gas valve has been installed, it is critical to double-check that it is properly secured.It is possible that gas will escape from the valve if it has not been correctly installed.Alternatively, it may prohibit the furnace from operating correctly.

As a result, it is critical to verify that this is correctly installed.

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Turn Gas Back On and Check Valve is Working

The next step is to re-ignite the gasoline engine.If there is a problem with the gas pressure, it should be corrected by resetting the gas pressure.The following step is to ensure that the furnace is properly igniting.It is likely that the gas valve is to blame for the failure of the ignition system.If the ignition system is not operating, this indicates a problem with the gas flow.

This indicates that it may be necessary to call in an expert to assess the situation and determine the source of the problem.

Use Tutorials

Because of the internet, acquiring new skills is now more accessible than it has ever been.YouTube is one of the most effective platforms for this.On YouTube, you can find dozens of lessons on how to conduct a variety of tasks, including how to change a gas valve, among others.If you are confused about how you should go about changing the gas valve on your furnace, it may be worthwhile to watch some internet videos to have a better understanding.Take a look at your watch and make some notes, and you should be good to go.

By observing how someone else performs the task, you may be certain that you will not make any mistakes when replacing the valve.There you have it, a step-by-step instruction to replace the gas valve in your furnace on your own.The majority of the time, the replacement process is quite straightforward and straightforward.

However, occasionally something goes wrong, making the process of replacing the valve a bit more complicated.If this is the case, and you are unsure of how to go, it may be a good idea to get the assistance of a professional to guide you through the process.Although it is absolutely safe to replace a gas valve on your own, if you don’t do it correctly, it may be quite harmful.This is due to the fact that the gas valve regulates the pressure of gas that is sent to the furnace, so preventing flames and explosions.The gas valve also serves to prevent gas from escaping from the furnace during operation.When installing a new valve, it is critical to follow the manufacturer’s instructions carefully and correctly.

The alternative might result in all sorts of issues, including the possibility of becoming harmful.If you have any doubts, you should consult with an expert and seek their opinion.

Signs Your Furnace Could Have a Faulty Gas Valve

It is one of the most typical reasons that we are contacted to do expert furnace repairs because a faulty gas valve has been installed.Winter has arrived in Vernon Hills, Illinois, and maintaining the effectiveness of your furnace is just as vital as getting out your sled and mittens in preparation for the cold.Consider learning about the most typical indicators of a malfunctioning gas valve in addition to arranging your yearly furnace repair appointment.

Why Is Your Furnace Gas Valve Important?

The gas valve is responsible for directing gas from your supply tank into your furnace.If the valve is not functioning properly, it may enable gas to escape into the surrounding environment.Although most modern furnaces are equipped with built-in safety mechanisms, leaks can still occur.Gas leaks pose major health and safety dangers, and they should be addressed as soon as possible.Please call a professional for furnace repairs as soon as you detect any indications that your gas valve is malfunctioning or suspects that your valve is not functioning properly.

It is still critical to get your gas valve repaired as soon as possible, even if you do not suspect a gas leak is present.When issues arise, you want to get to the bottom of them as fast as possible to avoid costly repair expenses or major safety and health hazards.

Signs of a Faulty Gas Valve

If the gas valve becomes blocked or malfunctions in any other way, your furnace may either totally shut down or cease producing heated air entirely.You should consult an expert technician to assess the problem and perform the necessary repairs because there are other difficulties that might be causing the same symptom.It is possible that the problem extends beyond your gas valve, and that other components or repairs may be required.

Other Signs of Furnace Trouble

If your furnace is making weird noises, if the airflow distribution is poor, or if it begins to cycle between the on and off settings on a regular basis, it is possible that you are experiencing difficulties that are not related to the gas valve.A service visit is required in order to troubleshoot the problem.Read on to learn more about expert furnace repairs in Vernon Hills and the surrounding region, or call Assurance Heating & Air Conditioning (847) 388-0316 for more information.

Gas water heater parts

Before 2005, all gas water heater parts were interchangeable with one another.The thermocouple or gas valve could be obtained from the local hardware shop, and you were up and running in no time at all.With the advent of gas water heaters, there are now a variety of designs and brand specific parts to choose from.Depending on the model and manufacturer, components for Flammable Vapor Ignition Resistant (FVIR) gas water heaters might be difficult to come by.In addition to having a sealed burner chamber with a viewing glass, FVIR gas water heaters also use an electronic Piezo Igniter to ignite the pilot (see pic.below).

Older style water heater. Flammable Vapor IgnitionResistant (FVIR)

Parts may be found by brand using the search box below.Some manufacturers no longer make their gas water heater components available to third-party dealers.You mayhave to purchase components directly from the firm or one of theirdealers.For a list of manufacturers and brands, please see this page.Lowe’s home improvement stores carry replacement gaskets for Whirlpool water heaters.

Rheem components may be found from Home Depot and Amazon, which are listed below.Disclaimer: If you make a purchase after clicking on one of the links on this page, I may receive a small profit on the sale – at no additional cost to you.Thanks!

Marathon State of Rheem We, the owners of Whirlpool, are participants in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to at no additional cost to you.We have no affiliation with or endorsement by Amazon Services LLC Associates Program.Thanks!

The parts below are sold at Amazon

Piezo Igniter

There are a variety of different kinds of piezo igniters for water heaters.Some people use a spade (flat) post to join the wires, while others utilize a circular connector to do so.To determine which connection you will require, unplug the wire from your igniter and examine it.Some include threaded holes and a nut for attachment, while others are intended to slide and snap into a retaining bracket when in place.The items listed below are available for purchase on Amazon.

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Universal thermocouples such as the ones listed below will work with any older-style water heaters as well as several FVIR water heaters. If your thermocouple has a thermal cutoff switch built into it and it is not listed below, contact the manufacturer or visit their website for further information.

18 in. universal thermocouple, fits most water heaters. 24 in. universal thermocouple.

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Thermocouple Kits

The gas water heater parts listed below (piezo igniters) are for water heaters that are (FVIR) Flammable Vapor Ignition Resistant. Return to the top of the page

Gas Water Heater Parts – Control Valves

Standard home gas valves feature a 3/4 inch threaded shank that screws into the tank and a 3/4 inch ball bearing.Some valves feature 1/2 inch threads, so be sure to double-check the thread size before purchasing.Natural gas and propane water heater gas valves are not interchangeable, so make sure you get the correct valve for your gas type.Some FVIR water heaters include gas control valves with left-handed threads at the thermocouple connection and/or the pilot tube or burner connection, which can be difficult to work with.If all three of the connections on your valve spin left to loosen, and right to tighten, and there are no wires linked to the valve, you have a standard gas valve, which is found on all older water heaters and severalFVIR brands of water heaters, among other things.

Check the manufacturer’s name, model number, and serial number on your gas valve and use the information to search for a valve on the internet.Contact the water heater’s manufacturer for further information.Return to the top of the page

$350 – $595, Installed

Replacement of your furnace gas valve will cost between $350 and $595, depending on where you live and how well your furnace is maintained. The cost of a DIY gas valve replacement was around $65 when the item was purchased online and installed by the homeowner. The typical price range is $350 to $595. The most recent update was made on Wednesday, January 12, 2022.

How Much does a Furnace Gas Valve Cost?

Low Estimate $195 – $440 Average Cost Estimate $350 – $595 High Estimate $510 – $870
Gas Line Size 1/2″ 1/2″ or 3/4″ 3/4″
Stages of Heat Single-Stage Single-Stage or 2-Stage 2-Stage or Variable
Converted for Propane No Yes or No Yes or No
Type Universal Universal or OEM Universal or OEM
Ignition Pilot Pilot or Hot Surface Ignitor (HSI) HSI
Furnace Accessibility Easy Easy to Moderate Moderate to Difficult
Wiring Included No Yes or No Yes or No
Supplies $0 – $30 $35 – $50 $60+
Installed By DIY Or Pro Pro Pro

Sections include: Overview | Product Costs | Installation Costs | Do It Yourself vs. Hire a Pro

Overview of Furnace Gas Valve Replacement

With time, furnace gas valves may become less reliable in terms of opening and closing.Cleaning and mending them can sometimes bring them back to life, but if that doesn’t work, the only other alternative is to replace them completely.As a result, gas valves are not fixed very often, mostly because the labor costs would put the price of a repair over the cost of a new part.This article contains reasons that account for the large cost range mentioned above.Gas valve costs given by homeowners, as well as prices gathered from other sources on the internet, are incorporated.

Whether or not this is a do-it-yourself project is also discussed in detail.

Other Common Furnace Repairs

Gas Valve and Supplies Cost Details

  • Factors Influencing the Cost of Gas Valve The most expensive furnace gas control valve costs four times as much as the least expensive. These considerations will assist you in narrowing down the possible ranges of estimates you will get. Gas Line Size: There are typically two types of gas lines used to supply furnaces. Gas valves intended to accommodate 3″ lines are more expensive than gas valves built to fit 12″ lines. A greater gas CFH (cubic feet per hour) flow rate is usually permitted by these types of valves.
  • Staged heating: Because two-stage and modulating capacity gas valves are more sophisticated than single-stage devices, they are more expensive. If you are unsure about the sort of furnace you have, the information may be discovered in the owner’s handbook or by looking for the furnace model number online (if you have one). The number can be located on a plate attached to the outside of the furnace cabinet or by removing the detachable top of the furnace cabinet.
  • Some gas valves are equipped with a nozzle sized for liquid propane, which allows for easy conversion (LP). Others must have a natural gas (NG) nozzle changed with a liquid propane (LP) valve during installation, which increases the labor cost by $25 to $50.
  • A less-expensive component from Honeywell, White Rodgers, or another universal manufacturer can be used to replace the gas valve on most furnaces. Only a few furnaces require parts from a certain manufacturer. This is one of the reasons why Lennox replacement components are more expensive than the industry average.
  • Using an intermittent pilot instead of a hot-surface ignitor, or HIS, will save you money on your valve installation.
  • Wiring: Gas valves that incorporate new wires for connection to the control board or ignition module cost a little more than the standard valves.
  • Installation Supplies and Their Costs Once a gas control valve has been properly detected, replacing it is an easy repair. There are only a few items required. $55 – $325 | The cost of a gas furnace gas valve is determined by the criteria given above – the size of the gas line, the number of stages of heat, and whether the item is branded or universal.
  • Wiring harnesses for gas valves range in price from $12 to $30.

Permits, Inspection, and Gas Valve Installation Costs

  • $0 | No permit is needed for furnace gas valve replacement

Labor Costs and Factors Affecting Furnace Gas Valve Installation By completing the work yourself, you will save money on labor charges. In most cases, the first hour of labor is included in the service call cost charged by the heating and air conditioning company. Service call cost and hourly rate range from $65 to $135.

  • Some firms charge a set amount for repairs, while others do not. Others may want to know where the furnace is located and how simple it is to access before they can provide you with a pricing quote for your furnace repair. These considerations may be relevant: Access to the furnace: Because furnaces located in attics and crawlspaces are more difficult to work on, repair expenses are greater. There are some furnaces out there with gas valves that take more labor than the typical to replace, which results in greater pricing as well
  • Where do you reside: The cost of living in the region is reflected in the labor costs for furnace repair. The Northeast and Northwest are generally the regions with the largest concentrations. Then there are other large metropolitan places to consider. Rural locations frequently have lower labor rates than urban ones.
  • Time Required for Installation The process of replacing a valve is typically uncomplicated. As access to the furnace becomes more restricted, the process becomes more time-consuming. Most gas valve repairs take up to one hour
  • valve replacements in attics, crawlspaces, and other comparable places take between one and two hours.

DIY or Hire a Pro

Because of the potential hazard of an explosion, we will almost never propose do-it-yourself gas furnace repair.Homeowners who are handy and have previous experience securely removing and reconnecting gas lines should be able to complete this repair without incident.That much is better if you have an experienced buddy who can provide a second set of eyes to the project as a second opinion.When it comes to gas hookups and appliance repairs, there isn’t much use in doing it yourself if you don’t have prior knowledge.

Basic Average Furnace Repair Costs

On February 23, 2021, it was published.Having a furnace that is damaged or malfunctioning throughout the winter months is a major annoyance.If you believe that your furnace may be in need of repair, have it taken care of as soon as possible.Whipple Service Champions’ inexpensive furnace repair service will assist you in keeping your home warm during the winter months.Several factors will influence the final cost, but you may receive an estimate based on the typical cost to replace individual parts or correct specific problems.

Continue reading to find out more about the average furnace repair prices for a variety of furnace issues.

Range of Costs Overall

Because there are so many different types of furnace problems that might occur, there is an extremely large range of potential expenditures.Furnace repairs cost between $500 and $1000 at the most expensive end of the spectrum in the United States.If your furnace occurs to be protected by a warranty at the time of a repair, the guarantee may cover the cost of the replacement components.This means you will solely be responsible for the cost of labor and service costs in this situation.If you don’t, you’ll have to add in the cost of replacing parts into your overall estimate of the project cost.

When evaluating the cost of your furnace repair, keep in mind that it may be a better investment to replace the furnace totally rather than just repair it.When your furnace is more than ten years old, you may want to consider replacing it rather than repairing it to prevent having to replace parts on a regular basis in the future.

Cost of Service Fees

When we dispatch a skilled member of our team to repair your furnace, this charge helps to defray the costs of their travel, lodging, and meals.Emergency jobs that occur outside of typical business hours, such as those that occur in the nights or on weekends, tend to have higher service prices.Maintaining your vehicle on a regular basis can assist you prevent having to make a last-minute contact that results in an increased price.Changing your furnace’s filters on a regular basis, inspecting it for leaks, and keeping it clean may all help to extend the life of your furnace and keep maintenance expenditures down.

Blower Motor

The average cost of repairing a blower motor is between $500 and $550. If the problem is more serious and a replacement is necessary, the cost will be more expensive to fix. A typical price for one of these motors is from $600 to $1,500, depending on how complicated the motor is and how large it is.

Draft Inducer Motor

The cost of a replacement draft inducer motor is between $500 and $700 dollars.Because some motors are exclusive to a certain manufacturer, it may be more difficult to get the precise model required.During emergency repair operations performed at odd hours, it is possible that technicians will not have the precise model on hand.Repairs are less expensive, with rates ranging from $250 to 450 dollars.

Thermostat Replacement

A malfunctioning thermostat is a reasonably simple problem to resolve. Sometimes the issue is simply a dead battery, which may be quickly and inexpensively repaired. Premium thermostats are frequently more sophisticated in their operations, and a replacement for one of them costs around $560 dollars (For a Premium Thermostat).

Ignitor Replacement

Problem igniters are one of the most prevalent issues that arise and are the reason for most repairs.In the absence of frequent cleaning, they can rapidly accumulate dirt and eventually cease to operate completely.They are frequently changed as an emergency operation, which results in a total cost of around $300-$400 owing to service fees and labor.If they are changed within normal business hours, they might cost up to $200 to replace them.Other sections of the furnace, such as the circuit board, might be damaged if the ignitor fails to function properly.

It is critical to replace an ignitor as soon as possible before it causes more damage.

Heat Exchanger

The heat exchanger in your furnace is a very important component. Inside this component, a heating fluid ignites, heating the air that will be circulated around your home to make it comfortable. Your heat exchanger cracking might result in major problems, such as carbon monoxide leakage, if left unattended.

Flame Sensor Repair or Replacement

Using flame sensors, you can guarantee that gas valves remain closed until there is a flame available to burn the gas, which helps avoid gas leaks by eliminating the opportunity for a buildup of gas. It consists of a metal rod that is placed in front of the furnace’s flame to provide heat. It is anticipated that both repairs and replacements would cost between $80 and $250.

Circuit Board

Many furnaces are equipped with many circuit boards, whereas others are equipped with simply a motherboard. The operation of the other components, such as the motors and sensors, is controlled by the circuit boards. The cost of repairs and replacements is around $900, depending on the degree of the work required.

Pressure Sensor

The pressure sensor, often known as a switch, in your furnace is responsible for ensuring that the furnace is properly drafting and exhausting surplus gases.There are two sorts of pressure switches: high-pressure switches and low-pressure switches, which are used for various types of furnaces.Whenever there is a buildup of gas that might be potentially hazardous, they inhibit the flame from igniting.This switch can be replaced for a cost ranging from $40 to $350, depending on the type of switch being replaced.There are two types of pressure switches: high-pressure switches and low-pressure switches.

Gas Valve or Smart Valve

Gas valves are in charge of regulating the flow of gas into your furnace.Occasionally, as they get older, they may lose the capacity to open and close their doors as appropriate.As a result of their increased complexity, gas valves for two-stage furnaces are often more expensive than gas valves for single-stage furnaces.If you require a liquid propane valve to be installed beside your gas valve during installation, the cost will be around $50 more expensive.Universal gas valves are significantly less expensive than brand-name valves.

A replacement job on a gas valve can range in price from $195 to $870 depending on the complexity of the project at hand.

Furnace Maintenance

  • Regular furnace maintenance can help you avoid expensive repair fees and even deadly furnace malfunctions. A specialist may inspect the condition of your furnace and its components, as well as change the filter and clean the inside of the furnace. An yearly checkup can identify malfunctioning parts and warn you to them before they cause serious damage or become a concern to your safety. Save money on the expense of furnace components replacements by having them completed as soon as possible so that you are prepared for winter or unexpected chilly days. Cleaning the air ducts, changing the filter on a regular basis, checking for leaks in the air ducts, and ensuring that the thermostat is operational are all good places to start with routine maintenance.

Signs You Need Furnace Repairs

If you have seen some of the indicators that parts of your furnace have ceased working, it is likely that you require furnace repairs.The most obvious sign that your furnace needs to be repaired is when it begins to spew cold air out of it.This demonstrates that it is not doing its most vital function, which is to heat air.Noises coming from the furnace indicate that a component has come loose and is banging about inside the furnace.Increased heating expenditures indicate that the furnace’s efficacy and efficiency are deteriorating, most likely as a result of a problem with one of its components.

The presence of a yellow pilot light is yet another telltale indicator that something is awry.If it is yellow, it is possible that carbon monoxide is escaping from your heat exchanger.If you notice any problems with your furnace, call a professional immediately.

Some furnace problems are exceedingly dangerous, and they can result in poisoning or flames if not addressed immediately.When a component is broken or damaged, technicians can respond quickly and effectively to the situation.If you have a plumbing, HVAC, electrical, or heating problem, Whipple Service Champions has a team of specialists ready to help you out.To arrange maintenance or repairs, please contact us right away.

Furnace gas valve replacement cost

The cost of replacing a furnace gas valve ranges from $200 to $800 on average. For a single furnace gas valve, costs can range from $75 to $300; for original manufacturer components, prices can reach $600. (OEM). The labor to repair a gas valve ranges from $125 to $500. Repairing a furnace’s gas valve might cost anywhere from $75 to $200.

Furnace gas valve replacement cost

National average cost $500
Minimum cost $125
Maximum cost $1,000
Average cost range $200 to $800

The cost information comes from research and project costs that have been provided by HomeGuide members.

Furnace gas valve prices by brand

Average furnace gas valve costs range from $50 to $300, with certain OEM components (original equipment manufacturers) costing up to $600 without installation. The cost of a gas valve varies depending on the kind and brand.

Furnace gas valve prices by brand

Brand Valve price Total replacement cost
Armstrong / Lennox / Ducane $75 – $500 $200 – $1,000
Carrier / Bryant $80 – $600 $200 – $1,100
Goodman / Amana $70 – $165 $195 – $665
Heil / Tempstar $50 – $550 $175 – $1,060
Rheem / Ruud $80 – $300 $200 – $800
Trane / American Standard $60 – $325 $185 – $825
York $95 – $240 $220 – $740

Request free estimates from furnace repair companies in your area.. Pros can be found here.

Gas valve for furnace cost factors

The cost of replacing a furnace gas-control valve is determined by the kind of valve, the brand, the availability of replacement parts, the accessibility to the furnace, and the labor rates in the area.

Cost factors to replace gas fireplace valve

Factor Average cost
Gas furnace valve part $75 – $300
Replacement labor $125 – $500
Total $200 – $800
  • Additional cost considerations are as follows: Furnace type – Gas valves for two-stage and modulating heat furnaces are more sophisticated and expensive than single-stage valves since they operate in two stages.
  • Brand – Universal components are less expensive than original manufacturer parts (OEM), which are more expensive.
  • Standing pilot vs. electronic ignition – The price of valves for electronic ignition systems is normally greater than the price of valves for standing pilot lights.
  • Conversion of a propane valve to a natural gas valve – Conversion kits typically cost an additional $50 to $100.
  • The installation of new wiring — A simple gas-valve wiring harness, which costs $20 to $50, is often required when replacing a really old gas valve.
  • Accessibility — Furnaces that are difficult to reach raise labor expenditures.
  • Labor is not covered by the majority of furnace warranties, which typically last 5 to 10 years.
  • Geographical location – Labor rates in metropolitan regions are greater than in rural locations.
  • Do it yourself vs. hiring a professional — Doing it yourself can save you anywhere from $125 to $500 in labor costs, but it will invalidate any active warranties.

On HomeGuide, you can find the best furnace repair professionals in your area. Pros can be found here.

Furnace gas-valve replacement labor cost

  • When employing a trained HVAC expert, the labor cost alone for a furnace gas valve repair ranges from $125 to $500 per hour. In most cases, furnace repair contractors charge between $75 and $150 per hour.
  • In most cases, call-out rates range from $75 to $200, and this price normally includes the first hour of labor.
  • Heating and cooling emergency service costs between $140 and $210 per hour for services performed outside of normal business hours.

Furnace gas valve repair cost

Diagnostics, valve cleaning, and tightening connections for minor faults are all included in the cost of a furnace gas valve repair, which ranges from $75 to $200.A damaged gas valve that requires internal repairs, on the other hand, need a complete gas valve replacement.For safety concerns, only the part manufacturer is authorized to legally repair a gas valve.Return to the top of the page

Cost to replace gas fireplace valve

Replacement of a gas fireplace valve typically costs $300 to $500, which includes a comprehensive fireplace inspection and diagnostic testing. The overall cost is determined on the brand of valve used and the accessibility of the fireplace.

Frequently asked questions

What is the gas valve on a furnace?

It is necessary to adjust gas flow to the pilot light and burners on a furnace by opening and closing the gas valve. It is vital to have a properly operating gas valve in order to prevent gas leaks and regulate interior temperatures. The designs of gas-valve components vary depending on the furnace manufacturer and type.

  • Types of gas valves for furnaces Characteristics of the Type System of gas chain valves Components should be kept apart.
  • Controls for the ″on″ and ″off″ valves are operated manually.
  • In the case of single-stage furnaces
  • Gas valve with a combination of functions Controls for single-stage, two-stage, and modulating units are provided by a single device with automatic and manual valve controls.
  • Valve with intelligence It is equipped with a self-monitoring circuit board.
  • Gas valve with a combination of functions
  • Direct ignition or pilot ignition are also options.

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