How To Drain A Water Heater That Is Clogged?

How to Drain a Water Heater With a Clogged Drain Valve

  • A drain valve on a water heater is a convenience feature that makes life easier.
  • This product will only be used when draining for repairs, when it is being disposed of, or when flushing the lime scale out with a hose, among other things.
  • A lack of lime, calcium, or iron accumulation in the water heater will result in easy drainage of the water through the drain valve.
  • However, if there is a buildup of debris, pieces of material can become lodged in the hole and obstruct the flow of water to the point where it will no longer drain.
  • Check to see if the valve is genuinely obstructed before proceeding.
  • Disconnect the water heater from the circuit breaker panel.
  • Alternative: Turn the gas valve till it is perpendicular to the gas line and then release the pressure.
  • If the drain valve is not located in close proximity to a drain, a drain hose should be attached.

Drain the tank by opening the drain valve and starting the draining process.Activate the pressure-relief valve located on the water heater’s exterior.Instead, switch on the hot water tap in your home.As a result, the negative pressure in the tank will be eliminated, and the tank will be able to drain.

  • As soon as the drain begins to run clean and clear, it indicates that the problem has been resolved.
  • If the water is still trickling out, the valve is blocked and has to be cleaned.
  • Step firmly onto the drain hose, which should be about 2 feet away from the water storage tank.
  • The air bubble created by this will be forced back into the tank, and it will help to temporarily unblock the valve if there is a clog caused by lime scale or other debris.
  • If the tank is clogged with debris, the obstruction may reappear within a few minutes if the tank is empty.
  • Draining the tank by repeatedly stomping on the hose and forcing air back into the tank after each clogging incident can eventually drain the tank, but it may take more effort than it is worth in the short term.
  • Reverse the flow of water via the water heater.
  • Close the valve and attach a faucet to the drain hose to stop the flow of water.
  • For this purpose, a two-sided female coupling washer hose should be used.
  • A washer hose can be threaded onto the end of a drain hose, as well as onto the nozzle of a regular garden faucet or the faucet of a washtub.

Once the washing hose has been connected to a faucet and a drain hose, turn on the faucet and let pressure to build up in the hose before turning off the faucet.Install a shut-off valve to enable water pressure from the hose to flow into the water tank and unclog any deposits that have accumulated in the valve.Remove the hose from the drain by turning off the valve and unscrewing it.To allow the water to drain, re-open the drain valve.

  • If the water does not drain, it is possible that the lime buildup is too severe or that the valve is damaged.
  • Drain the water heater by removing the drain valve from the water heater.
  • Allow 24 hours for the tank to cool before doing this.
  • Turn off the drain valve by inserting a pipe wrench into the valve body and turning carefully.
  • It’s possible that the fixture may begin to leak abundantly as you remove it, but the leaks will rapidly become clogged with lime particles.

You should expect a torrent of water to burst out the opening after the valve has been entirely shut off.It is possible that the water tank will continue to empty effectively in this manner.However, if the lime deposits are extensive and plug the drain hole, the draining may come to a grinding halt very soon.

A screwdriver should be inserted into the drain hole that has been created by removing the valve. Pull the screwdriver out of the hole by swirling it around. The water will begin to drain, but it is possible that it could block up again shortly. Insert the screwdriver into the opening as many times as required to break up the obstruction before the tank has entirely drained.

Things You Will Need

  • Wrench for removing pipes
  • Hose for washing machines
  • Leather-palm gloves
  • Screwdriver


When disconnecting the drain valve, put on a pair of leather-palm gloves to protect your hands from the hot water.

Use These Tips to Drain a Water Heater Properly

  • Most water heater maintenance instructions recommend that you drain a water heater every six to twelve months, depending on how much use it gets.
  • The reason for this is that it will aid in the removal of any sediment or buildup that may have accumulated on the bottom of the water heater tank as a result of the presence of minerals and other particles in the water.
  • As a result of the accumulation, the water heater will have to work harder to heat the water, consuming more energy and increasing its operating costs.

Before You Begin

Before you begin, make sure you understand where the main water shutdown valve is situated in your home. While you won’t necessarily need it during this procedure, it’s always a good idea to be familiar with this valve whenever you’re dealing with any type of plumbing fixtures in your house in case something goes wrong and you need to shut off all water coming through your pipes.

Safety Considerations

  • When doing this procedure, you will be working with water that can be quite hot.
  • It is possible that you will need to switch off your hot water heater many hours before you begin in order to allow the water in the tank to calm down before you begin.
  • If you are unable to do so, use heavy-duty rubber work gloves to protect your hands from any splashes and safety glasses to protect your eyes from any hot water droplets that may fall over them.


  • Drain valve (if necessary)
  • Threaded hose cap (if necessary)
  • Drain valve (if necessary)

Perform a Quick Flush

  • Using a garden hose connected to the drain valve, attempt to clean the water heater tank a little bit while the water pressure is still on before shutting off the water supply.
  • In order to accomplish this, first open the drain valve for a few seconds before closing it again.
  • The pressure will blast away any silt that has become lodged in the valve, allowing the tank to empty more quickly.
  • If a significant amount of sediment is expelled, you may need to repeat the process several times.

Make certain that you’ve connected your garden hose to an outdoor place or into a bucket in order to collect the water and sediment that will be emitted from the faucet.

Turn Off the Water Heater

  • Stop using your water heater by turning off the gas to it, or turning off the electricity if it is an electric heater.
  • To do this, close either the valve on the cold-water line above the water heater or the main water supply valve to the house, depending on which is most convenient.
  • Test the hot water faucets around the home by turning them on and checking for water to ensure that the pressure has been released.
  • Water may flood out at first, but if the water has been cut off properly, it should rapidly decrease to a trickle and then stop.

It is important to leave a hot water faucet open in the sink closest to your hot water heater in order to relieve pressure in the entire system.

Open the Drain Valve

  • Using your garden hose, open the drain valve on the bottom of the sink.
  • Normally, you may complete this task by hand, but you may need to employ your flat-head screwdriver in this instance.
  • Once the valve is opened, water will begin to rush out of the drain, so make sure your hose is either connected to the outside or to a bucket to catch the water.
  • You should switch off the drain valve as soon as the bucket is full so that you may empty it.

Repeat the operation as many times as necessary to completely empty the tank.

Flush the Tank With Water

Once the tank has been completely drained, you may flush it with a few gallons at a time by turning on the water for a few seconds and then allowing it to drain out again until it is completely empty. When the outflow is clean, you’ll know that you’ve successfully eliminated the sediment and may proceed to the following phase in the process.

Refill the Water Heater

Close the drain valve and remove the garden hose from the system.Make certain that all but one of your home’s hot water faucets are turned off (the one in the bathtub closest to the water heater is best).You may now re-start the water heater by turning the water back on.After that, keep an eye on the faucet you left open and, as soon as you notice that you are receiving nothing but water out of it, turn it off.

Relight the Water Heater

Re-ignite the water heater’s pilot light, or if it’s an electric heater, re-energize the circuit breaker. You should be able to use hot water after an hour or so.

Check the Drain Valve

Check for leaks at the spout of your water heater to see if the drain on the heater has completely closed. If the outlet does not completely close, you can stop the leak by placing a threaded hose cap over the hose thread of the outlet. Alternatively, you can totally replace the valve.

How To Drain A Clogged Water Heater

Knowing how to unclog a drain valve might come in handy when you have more than 50 gallons of hot water in your tank and it refuses to drain!The most typical cause for a drain valve to become clogged is an accumulation of silt.Flushing sediment out of your water heater should be part of your normal water heater maintenance routine to ensure that it lasts as long as possible.This article will demonstrate a number of different techniques for unclogging a drain valve.Start at the beginning of the list and go on to the next way if the first one doesn’t work out for you.

  1. Your water heater’s drain valve will be clogged to a varying degree, which will define the severity of the treatment you’ll need to perform.
  2. The vast majority of the time, you’ll be able to unclog your drain valve at some point in time.

Is Your Drain Valve Clogged?

As a result of the incoming water supply, sediment might accumulate in your tank.It can also be left over from the interior of your tank, such as rust.Minerals separate and settle at the bottom of the tank as a result of heating water, resulting in lime scale over time.Sediment buildup is detrimental to the performance of water heaters.It degrades the efficiency of the unit, damages the interior of the tank, and has the potential to accumulate to the point of obstructing the drain valve, among other things.

  1. Unclogging a drain valve can range from a simple procedure to a huge pain depending on its complexity.
  2. If you do not discover a means to drain your tank, you will ultimately have to purchase a new water heater because the interior of the tank will begin to deteriorate and a leak will emerge that will be impossible to repair.
  3. But before you leap to conclusions, do the following procedures to discover whether or not your drain valve is clogged:
  1. Before you do anything else, switch off the fuel to your water heater. During electric units, switch off the circuit breaker
  2. during gas units, turn the control knob to pilot off.
  3. Connect a garden hose to the drain valve and run the other end of the hose outdoors to collect the water (or to a drain). then turn the water heater’s drainage valve to ″off.″
  4. Air must be allowed to enter the tank from a nearby hot water faucet.
  5. As the water drains from your tank, take note of any unusual odors. If it is clear, the valve is not blocked
  6. otherwise, it is clogged.
  7. You will need to unclog your drain valve if the water is not draining or is just partially draining
  8. otherwise, you will need to replace your drain valve.

How to Cool Water within a Hot Water Heater Tank

You should always use caution while handling hot water from your hot water heater tank since the water will be quite hot in most circumstances, and you will want to avoid getting burned.When attempting to drain the tank, you should always use safety goggles and work gloves to help prevent your eyes and hands from being injured.Always let the water within your tank to cool before attempting to empty it.Here are three options:

  1. Allow up to 24 hours after turning off the electricity for the water heater to cool before using it.
  2. Drain as much water down the drain valve as you possibly can. When the power is turned off, leave the water inlet valve open. Cool water will enter the tank when the water drains from it, diluting the hot water that was previously present. This procedure will only work if your drain valve is not fully clogged
  3. otherwise, it will not work.
  4. When the drain valve is entirely jammed, turn on multiple hot water faucets throughout the home to flush the system. Cut power to the unit, but keep the cold water intake valve open to allow cold water to dilute the hot water.

How to Unclog a Drain Valve

The severity of the obstruction will decide which remedy is most effective for you.The first approach on this list is the simplest to implement.We propose that you start at the top and work your way down until you find a solution that is effective.Before you begin, keep in mind that anytime you empty your water heater, you should always switch off the electricity and shut off the incoming water supply.Check with your local plumber and get FREE estimates today.

Give it Time

  • Many mild blockages will clear themselves on their own. If the pressure from the water is high enough, the debris will be forced through the open drain valve if the chance presents itself. Take the following steps: Glue the other end of a garden hose to the drain valve and route the other end outside or to an interior drainage system.
  • Close all hot water taps in the house.
  • Drain the water by opening the drain valve.
  • Wait to see if the water’s pressure will be enough to force through the obstruction. Allow for a couple of hours.

Use a Stiff Wire

  • The ″stiff wire″ approach may be highly successful, especially if there is a little amount of material keeping your tank from emptying properly, which may be resulting in your water heater making strange noises as a consequence of this obstruction. The way it works is as follows: Close the drain valve and remove the hose that connects to it before starting the job.
  • Place a couple towels below the drain valve or a bucket beneath the valve to catch any leaking water.
  • Open the drain valve and put a stiff wire or a wire coat hanger into the entrance of the drain valve to stop it from backing up.
  • Rotate the wire in a circular motion to make it more flexible. This will aid in the loosening of the debris.
  • If you were successful in unclogging the drain valve, water should begin to flow through the valve.
  • Continue to insert the wire until you get a steady stream of water. After that, close the valve and connect the hose to it.
  • During the process of draining the tank, it is not unusual for the drain valve to become clogged on many occasions. Continue until the tank is completely depleted.
See also:  How Long Will A Gas Water Heater Last?

Watch the Video

Stomp on the Hose

The ″stomp on the hose″ approach should be tried if none of the other two procedures is successful.

Here’s What to Do:

  • Stomping on the hose approximately 2-feet away from the water heater with the line attached and the drain valve open will cause an air bubble to be blown into the tank. This will frequently be sufficient to clear the drain valve.
  • Prepare to repeat the operation because the seiment within the tank will most likely settle and block the valve once more
  • else, call for assistance.

Check with your local plumber and get FREE estimates today.

Reverse Flow

It is nearly always necessary to use the ″reverse flow″ approach to unclog a drain valve. If the blockage is severe or the drain valve is no longer functional, however, you will need to resort to one of the other procedures.

Here’s What to Do:

  • Connect one end of a washing machine hose to the drain valve and the other end to a garden hose while keeping the drain valve closed.
  • Reconnect the garden hose’s other end to a threaded faucet, such as a wash tub or an exterior faucet
  • Turn on the water supply to the faucet and open the drain valve for about 10 to 15 seconds to flush the toilet.
  • As water pours into the tank through the valve, it should unclog the drain valve
  • otherwise, the tank would overflow.
  • Close the drain valve and turn off the water supply at the faucet if necessary.
  • Disconnect the hose from the faucet and turn on the drain valve if necessary.
  • The water should be able to drain. However, if it does not, it is most likely because the drain valve is malfunctioning or because the obstruction is too severe.

Hose from the washing machineConnecting a washing machine hose to your drain valve together with a garden hose will help you to clear any obstruction that has formed in your drain valve.

Watch the Video

Replace the Drain Valve

Unless you are able to unclog the drain valve using one of the ways listed above, it may be necessary to replace the valve. It is feasible to do this task with a full tank of water, believe it or not.

Here’s What to Do:

  • Teflon tape should be used to seal the threads of your new drain valve. We propose that you invest in a brass drain valve.
  • All of the hot water taps around the home should be turned off. Creating a vacuum while the faucets are closed will prevent the water from leaking out
  • this will prevent the water from leaking out.
  • Place towels and a pan under the drain valve to catch any leaks.
  • Unscrew the drain valve using an adjustable wrench and rapidly replace it with your new valve
  • While the operation is underway, some water will be released from your tank. Consider switching valves as quickly as possible and having towels on hand to quickly wipe up any water that may have gotten into the house.
  • Installing the replacement valve is as simple as connecting a garden hose and draining the storage tank.

Drain Valve Made of Brass If you find yourself in the position of having to replace your drain valve, we highly recommend investing in a high-quality brass one. Check with your local plumber and get FREE estimates today.

Replace the Valve with a Ball Valve 

Replacing your drain valve with a ball valve will not only solve your immediate problem, but it will also serve as a preventative measure, preventing your water heater from being clogged in the future as well.Ball valves are far bigger than normal drain valves, and as a result, they are more difficult to clog.You’ll need to buy a 3/4-inch ball valve as well as two 3/4-inch dielectric nipples for this project.

Here’s What to Do:

  • Wrap teflon tape around one end of the dielectric nipple to keep it in place. Then screw the wrapped end into the ball valve
  • this completes the process.
  • Wrap both ends of the second nipple around the first nipple (3 of the 4 threaded ends of the nipples will be lined with Teflon tape). Decide which one will be wrapped around the wall valve handle. Wrap the nipple around the tank handle so that it opens away from the tank.
  • If you want to prevent water from spilling out of the drain valve hole, you should turn off all of the faucets in your house.
  • Place towels and a pan or bucket beneath the drain valve to catch any water that comes out.
  • Remove the drain valve with a wrench and replace it with your new ball valve as soon as possible.
  • Prepare yourself since some water will be poured from the tank.
  • Pour water into the tank by connecting a garden hose and turning on the ball valve.
  • When the ball valve is not in use, it is a good idea to remove the handle from the valve. The majority of ball valves are equipped with a lengthy lever-style handle that can be accidentally opened. If this occurs, your tank may begin to leak without your notice. This has the potential to damage the tank, cause water damage, and even result in serious burns.

Ball Valve is a type of valve that has a ball in it. The majority of the time, replacing your drain valve with a ball valve will resolve your problem. Dielectric NipplesYou’ll need two nipples to replace the drain valve with a ball valve when replacing the drain valve with a ball valve.

Watch the Video

Move Your Tank Outside

It’s quite reasonable to bring your tank outside and allow it to drain from the top from time to time.In the event that you intend on upgrading your water heater, you may not want to go through the bother of replacing your drain valve with a ball valve, and you may not be concerned about the state of your tank after it has already been emptied.It seems reasonable to move your tank outside in this situation.However, you must use caution because your tank will be incredibly hefty.It is strongly recommended that you chill the water first.

Here’s What to Do:

  • Unplug the power source (gas line or electrical connection) from the house.
  • Ensure that all water lines, including incoming and outgoing, are disconnected.
  • Then, using a hand truck, transport your water heater outside
  • As soon as you are outdoors, carefully flip the heater on its side.
  • Allow the water to flow out of the tank’s top, if possible.

Check with your local plumber and get FREE estimates today.

How to Drain a Clogged Water Heater? [7 Super Ways]

TanklessWaterHeaterExpress is sponsored entirely by its readers.Because I am an Amazon Associate, I receive money when people make eligible purchases.Every day, we consume over 50 litres of hot water in the shower and in the kitchen, which is a significant amount.However, if you are hosting a family gathering and expect a large number of guests, maintaining the Water Heater operational is one of the most crucial things to consider!Things can become worse if you have a clogged water heater, as you may have heard.

  1. In fact, understanding how to unclog a hot water line can rescue the day when the hot water won’t drain any longer.
  2. There are a variety of reasons why a water heater may get blocked, with sediments being the most prevalent cause.
  3. If you are experiencing difficulties, this tutorial on how to unclog a clogged water heater may be the most appropriate answer for you.
  4. Water can be contaminated at any moment, and the likelihood of sediment entering the tank increases if you live in a region with high levels of pollution.
  5. It is possible that these sediments will be of various sizes when they begin to fill the exit pipe, resulting in a situation of chaos.
  6. Rust and other particles may also be present in the interior of your tanks, as well as other contaminants.

This may result in the formation of limescale, which implies that you may experience a variety of difficulties with your water heater.Sediment development may be extremely detrimental in any situation.This is why it is always vital to maintain the water system on a regular basis.

Is Your Drain Valve Clogged?

The most important thing to remember while dealing with a clogged drain valve is that you must remain calm and focused.Yes, it might be a simple necessity at times, but it can also become far too large for you to handle at other times.Unclogging the heater will be impossible until you discover a means to replace it, which would cost you more money.In reality, the severity of the crisis and the state of the valve determine the extent of the hard work required to repair it.If you have previously determined that there is a problem with the drain valve, you may quickly assess whether or not it is clogged by following these simple steps.

  1. Put simply, switch off the fuel and take the necessary precautions. Simply turn off all of the electrical connections that are available, as well as the circuit breaker! Also, if you have a control knob to pilot the gas, make sure to turn it off as well.
  2. You will now need to connect a garden hose to the drain valve to complete the process. Run the opposite end of the drain to complete the cycle. Following that, you must open the drain valve on the heater.
  3. After you are finished with this, you will need to open a faucet that will allow air to flow into the tank. This indicates that the valve is in full working order and in good shape.
  4. Once that is completed, you must check to see if any drain water is flowing out of the tank. It is free of obstructions
  5. the valve is in excellent working order and is not obstructed
  6. If you discover that no water is flowing out of the heater, you may need to replace it or even unclog the heater water tank
  7. however, this is not always the case.

Safety Tip

One of your primary concerns is ensuring that you have taken appropriate safety precautions before proceeding. Before you attempt to unclog the water heater or even conduct any sort of research with it, you should be aware of the safety precautions that must be observed. Here are some suggestions that you may easily implement.

  1. Start by donning safety goggles, which will keep your eyes protected even if hot water flows out of the faucet. In addition to this, if you are attempting to drain the tank, you may try out using gloves
  2. try to chill the water before attempting to clean the water first. Whatever your motivation for cleaning the water from within, you must be aware that cold water must be used to do this task. You may simply chill the water by using one of the three ways listed below:
  3. Make sure you leave the hot water in the tank for at least 24 hours after you have turned off the electricity. This implies that you must first adjust the temperature to a cool and comfortable level below the normal room temperature before turning on the heater
  4. try to drain as much water as possible before turning on the heater. Maintaining the drain valve open, even if it is not functioning correctly, is recommended. Aside from that, you must keep the water intake open at all times. Check to see that the power has been turned off. This is due to the fact that the colder the water that you can obtain, the better the water’s ability to dilute the hot water will be. However, this procedure will only work if the drain valve is not fully clogged
  5. otherwise, it will not function.
  6. It is necessary to open all of the hot water faucets in your room if the drain water faucet has become fully blocked. It is now necessary to open the water heater’s cold water intake valve to allow for more water to enter. The remaining hot water from the water heater will be diluted as a result.

How to Unclog a Drain Valve?

In order to clear the water blockage, you must start from the beginning.But first and foremost, you must determine the severity of the clog’s presence..There are several methods for unclogging a clogged toilet, and the method used depends determine how bad the clog is.You can experiment with the strategies listed below, starting with the simplest and progressing to the more sophisticated procedures as you progress.But, before you begin, be certain that you have followed all of the safety procedures in place.

1. Give it Time

If you have a little blockage in your geyser, try to be patient and wait a while.In the event that you are staying in a polluted region, it is inevitable that little rust may occur.However, you may not have to be concerned about it too much.You may just provide a small amount of nominal pressure to the drain valve, which will allow the blockage to flow out of the valve.However, you may simply achieve good outcomes by following these few procedures.

  1. It is necessary to tie a garden hose to the drain valve as soon as possible after turning on the water. You may now connect the other end of the pipe to an exterior drain or an inside drainage system. Closing all of the hot water taps and opening the drain valve will enable the blockage to migrate out of the pipe and past the debris. The next step is to turn on the water heater to allow it to create pressure. You just need to let this process a couple of hours to thoroughly clear the blockage
  2. otherwise, it will take longer.

2. Stiff Wire

In the event that there is not only a blockage but also a tiny bit of debris in the tank, this procedure is quite successful. The material is preventing the tank’s outflow from emptying properly. In fact, as a result of this procedure, you may hear some strange noises as well. However, if you want to learn more, you may simply follow the steps below:

  1. The first step is to stop the drain valve and then to detach the hose from the drain valve. You may lay a small tub or a towel right below the drain valve to keep it from overflowing. After that, open the drain valve and insert a stiff wire or a wire coat hanger into the opening mouth of the valve, which will aid in catching the water that has leaked from the valve. Now attempt to gently rotate the wire in a circular motion
  2. if you have done it correctly, the water should begin to flow through the valve shortly after you have finished. However, if this is not done, you will need to continue the operation until the water drains completely.
  3. Once the water has been released, you must turn off the valve and reconnect the hose to the faucet. The heater is now operational, which means it is ready for use.

Do you have any questions regarding how long it takes to drain a water heater? If that’s the case, we believe this page will provide answers to all of your queries.

See also:  Why Is My Electric Tankless Water Heater Not Heating?

3. Stomp the Hose

If you believe that the two procedures described above are ineffective, you might attempt the Stomp the Hose approach. The following are the stages that you must complete.

  1. Maintain the connection between the hose and the valve while leaving the valve open. Water will be able to stomp on the hose as a result of this. You must raise the range to 2 feet away from the water heater
  2. otherwise, an air bubble will enter the water heater and cause it to malfunction. This may be sufficient to unclog the drain
  3. due to the pressure created by the water, the blockage will immediately flow out of the sink and into the sewer. You will need to reset the blocked valve if it does not flow out the first time you did it.

4. Reverse Flow

It is one of the most unusual methods for clearing a clog from the water heater, and it is used by many professionals. In most cases, this procedure is effective when the drain valve is entirely blocked and does not function at all. Take the following steps:

  1. Drain valve should be kept shut. Then connect the drain valve to the other end of a separate hose, which should be connected to the garden hose.
  2. You may achieve excellent results by turning on the water faucet for around 10 to 15 seconds
  3. Flowing water can clogged the drain valve in no time if you let it to get to it in the first place. As soon as you’re finished, just unhook the hose and let the water to run away. If the blockage is not too serious, this will also help to clear it out.

5. Replace the Drain Valve

If you are unable to physically remove the blockage, you may easily replace the drain valve, which is a simple procedure. To find out more, follow the steps outlined below.

  1. Teflon Tape is used to seal the threads of the new brass drain valve, which is made of brass. To prevent the water from flowing out, close all of the hot water taps and turn off the heater. This will create a vacuum and prevent the water from pouring out. Alternatively, you may position a towel or a bucket beneath the drain valve to catch the water. Then, using an adjustable wrench, remove the old drain valve. Attempt to replace the old drain valve with the new one as soon as possible throughout this operation.
  2. Connect the valve to a garden hose to ensure that you obtain the best possible outcome

6. Replace with a Ball Valve

The ball valve is just as crucial as the drain valve when it comes to any type of water heater. Because of the mechanism, the drain valve tends to clog more quickly than a ball valve of any other type. As a result, a ball valve may be readily installed in place of the drain valve. The following are the procedures to be followed:

  1. Take the ball valve and wrap both ends with Teflon tape to prevent leakage. It is necessary to screw one of the wrapped ends of the valve to the dielectric nipple
  2. otherwise, the valve will not work.
  3. Wrap both ends of the other nipple with the same Teflon Tape that you used for the first. Make certain that there is enough room for the handle to move around. The handle should move away from the tank
  4. \sAll the faucets in the home should be closed to prevent the water from pouring out of the valve. To drain the tank, you must now connect a garden hose to the ball valve
  5. otherwise, the tank will overflow.

7. Move Your Tank

Try using the standard method of moving or shaking the tank if the inventive methods aren’t yielding the results you desire. The following are the procedures to be followed.

  1. Ensure that all of the water heater’s power sources are turned off, as well as all of the incoming and exiting water lines.
  2. Pull the water heater away from the wall and start gently shaking the heater to loosen it up. It should be moved outdoors using a hand truck.
  3. Once you’re finished, reattach it to its original spot on the wall. To drain the tank, just open the drain valve and let the water to pour out. In this way, the obstruction will be cleared.

Should You Drain a Water Heater When Not in Use?

Draining your water heater is just as vital as cleaning any filters or water purifiers in your house, and it should be done on a regular basis.Environmental factors such as the accumulation of sediments and contaminants in your area may have an effect on the heater’s internal components at any moment.If you leave the cold water to remain within the heater for an extended period of time, it will begin to corrode the interior of the appliance.As a result, you must ensure that the input pipe is closed and that the whole drainage system is turned off.


The procedures described above may always be followed in order to learn everything about How to Drain a Clogged Water Heater.You may, however, experience a variety of issues if these approaches do not work for your heater.Consider consulting with an expert, or else look into purchasing a new water heater in this situation.There are a variety of different methods for clearing the clog from the water heater that you may try as well.If you are staying in an area with high levels of pollution, we recommend that you have your plumbing system checked on a regular basis to avoid any form of permanent obstruction.

  1. However, if you are still experiencing issues after attempting the solutions listed above, please let us know in the comments section below.

How to Drain a Clogged Water Heater

Water is accumulating in your tank, making it heavier and more difficult to carry.However, you’ve encountered a problem: the water will not drain out!In this instance, it is probable that the drain valve on your water heater is clogged.Don’t be concerned; this is a typical problem that can be resolved quickly.To unclog your blocked water heater, use one of these ways.

  1. Scroll down to get a video tutorial on how to do it!

2 Ways to Drain a Clogged Water Heater

Use A Wire to Clear the Clog

To begin, use a wire to take away any debris that may have become stuck in your drain valve (sturdier the better).Ensure that the water valve is switched on so that you can check if the debris removal is assisting the water flow.Keep in mind that if it works, water will likely begin to spray very quickly, so you’ll want to be prepared for this possibility.Prepare to close the drain valve as soon as possible to halt the flow of water.Additionally, you may want to set out some towels and/or have a bucket nearby to catch as much water as you can during the storm (you may need a helper for this).

  1. If the drain stops draining after a time (or if this approach does not work at all), it is likely that lime deposits have built up in the drain valve.
  2. If this is the case, you should proceed to the following technique.

Use a CO2 Drain Gun

It is necessary to employ a CO2 drain cannon for this second procedure since it utilizes compressed air to assist in clearing drain pipes.Make sure the pressure release valve is open before attaching the drain gun to the water valve.Otherwise, the drain gun will not work.This allows for the release of trapped air pressure.As soon as you’ve finished, pull the trigger on the associated trigger to shoot pressurized air up into the drain valve and flush out the sediments.

  1. Again, be cautious of quick water flow once you hit the trigger, since this should occur very immediately after pressing the trigger.
  2. As soon as you’ve turned off the drain valve, connect an appropriate hose (one that feeds to the location where you want the water evacuated) and turn the drain valve back on to make water removal simpler.
  3. To witness Tiger Tom of Tiger Mechanical show how to drain a blocked water heater, watch the video below:

How to Unclog a Drain Valve: 7 Ways to Get the Water Flowing

As an Amazon Associate, we receive a commission on qualifying purchases made via our links.Find out more.When your water heater won’t drain, the most likely reason is that the drain valve has become clogged.This is usually the result of an excessive amount of silt accumulating within the tank.During the heating process, the minerals present in the water separate and settle to the bottom of the water heater.

  1. If the sediment in the tank is not removed on a regular basis, it will not only diminish the effectiveness of the device, but it can also clog the drain valve, causing the water to become trapped within the water heater.
  2. When it comes to the degree of your blockage, it might range from a slight nuisance to a severe problem.
  3. If left ignored, it will eventually necessitate the purchase of a new water heater, as the sediment will corrode the interior of your tank and cause an unrepairable leak, resulting in the necessity to replace your water heater.

7 Methods to Unclog a Drain Valve

Is Your Drain Valve Clogged?

In order to verify if your water heater drain valve is genuinely clogged, you must first ascertain whether it is. Take the following steps:

  1. Turn off the fuel supply for your water heater (electric: turn off the power to the water heater). Turn off the circuit breaker (in the case of gas, turn the on/off control knob to the off position)
  2. Drainage should be connected to the drain valve and the valve should be OPENED.
  3. DEPRESSURE IN THE TANK: OPEN a hot water faucet inside your home (and leave it open) to allow the negative pressure to escape
  4. It is unlikely that your valve is clogged if the water drains and turns clean.
  5. It is possible that the valve has become blocked if water trickles out or does not drain at all.
  • The water in the tank may be quite hot, so use caution while handling it. To avoid being burnt in this situation, you should take appropriate safety steps before proceeding. Whenever attempting to empty a water heater, always use work gloves and safety eyewear to prevent injury. Additionally, the water should be allowed to cool before being drained. There are numerous techniques for cooling the water inside the tank, which are as follows: It is necessary to turn off the natural gas or electric supply to the water heater and let it sit for up to 24 hours.
  • Drain as much water as possible from the drain valve and leave the water inlet valve open if your water heater is not fully blocked. Cold water will be able to enter your tank and dilute the hot water as a result of this. To begin drawing hot water from the tank, switch off the fuel source (gas or electricity). If your water heater is fully clogged, open the hot water taps in your kitchen and bathroom to allow hot water to flow out of the tank. Keep the cold water intake valve open to allow the hot water to cool down to a more comfortable temperature. It is necessary to cut off the fuel source (gas or electricity) in order to prevent the water from warming.

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How to Unclog a Water Heater Drain Valve

There are a variety of methods for draining a clogged water heater tank, and the degree of the blockage will play a significant factor in selecting which approach is most effective.Begin with the simplest item on the list and work your way down to the more difficult items.Take note that the water in the tank is most likely quite hot, so take precautions to avoid getting burned by following the safety guidelines stated above.Before you begin, make sure that the water heater’s power supply is turned off.- Turn the on/off control knob for gas water heaters to off.

  1. – Turn the circuit breaker off for electric water heaters.


  • If your drain valve is clogged, the first thing you should do is to wait it out. Occasionally, the weight of the water within the tank will be sufficient to dislodge the blockage on its own. Here’s what you should do: Continue to leave the drain valve open while the hose is connected.
  • Close all hot water faucets in the home except for one.
  • Continue to wait for about an hour to observe whether the tank begins to drain.

Wire Coat Hanger

  • If waiting doesn’t work to unclog your drain valve, the next step is to use a wire coat hanger to clear the obstruction. Close the drain valve and take the hose out of the system.
  • Under the drain valve, a small pail or a couple towels are a good idea to keep the water from backing up.
  • Make use of a sturdy wire, such as a wire coat hanger, for this project.
  • Drain the tank by opening the drain valve and inserting the wire through the valve hole into the tank.
  • Move the wire in a circular motion to try to dislodge any debris that has accumulated.
  • If you are successful, the water will begin to flow out of the tank
  • otherwise, nothing will happen.
  • Once you have a steady flow of water, you may close the valve and connect a hose to allow the tank to drain completely.
  • Before your tank is totally empty, the valve may become clogged again
  • however, you may just repeat the operation.

Watch the Video

Hose Stomp

  • Stomping on the hose may help if your drain valve is still not working properly. As soon as you have connected the hose to the drain valve, stand firmly onto the hose around 2 feet away from your water heater
  • If the sediment is the source of the blockage, an air bubble will be blasted back into the tank, clearing the obstruction and unclogging the valve.
  • You shouldn’t be surprised if the drain valve becomes clogged once more when you are attempting to drain the tank. Basically, you just have to keep repeating the process until the tank is totally emptied.

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Back Flush

  • If none of the procedures listed above were successful, it may be necessary to attempt back cleansing your water heater. Here’s how it’s done: Make use of a fill hose from a washing machine. On both ends of these hoses, there is a female connector.
  • DON’T forget to close the drain valve and attach one end of the wash machine hose to the valve. Connections for the other end of the hose can be made to a nearby washtub faucet (washtub faucets are usually threaded), or to a garden hose, which can be connected to an exterior faucet.
  • Turn the water supply to the faucet on.
  • OPEN the water heater’s drain valve and allow the water to flow into the tank for 10 to 15 seconds
  • OPEN the water heater’s drain valve and allow the water to flow into the tank
  • In order to unclog the valve, water from the hose should be used to drive the silt away from the valve.
  • Close the drain valve and turn OFF the water at the faucet to prevent a puddle from forming. Unplug the hose from the faucet (leave the line attached to the drain valve, or use a garden hose to drain the tank)
  • OPEN the water heater drain valve and allow the water to drain from the tank.
  • It’s possible that your blockage is too severe or that your drain valve is malfunctioning, in which case you’ll need to replace your drain valve.
See also:  How To Clean Thermocouple On Water Heater

Watch the Video

Replace the Drain Valve

  • If backflushing does not resolve the issue, it may be necessary to replace the drain valve. It IS feasible to change the drain valve while your tank is still full with water if the procedure is followed correctly. Here’s how it’s done: Replacement drain valve (preferably brass) should be purchased.
  • Put teflon tape on the threads of the replacement drain valve to prevent corrosion.
  • Check to make sure that ALL of the faucets in your home are closed. When this happens, your water heater will generate a vacuum, which will prevent the water from ″pouring out.″
  • Place a bucket and a few towels beneath the drain valve to catch the water.
  • To open the drain valve, use an adjustable wrench to turn it.
  • Remove the drain valve one turn at a time. Keep in mind that some water will be dripping from your tank.
  • Even if your tank is completely blocked, you will very certainly have some water escaping from it. If, on the other hand, the problem is a defective drain valve, you will almost surely have water.
  • Insert the replacement drain valve as soon as possible. This shouldn’t take more than a few seconds.
  • To drain your tank, just connect it to the new drain valve using a garden hose
  • We propose that if you’re going to go to the trouble of replacing your drain valve, you consider replacing it with a ball valve to save time and money (see below). Your drain valve will never clog again, and you will never have to worry about it again.

Many water heaters are equipped with low-cost plastic drain valves. You should replace it with a high-quality brass valve, such as this one from Rheem, if you find yourself in this situation.

Replace the Drain Valve with a Ball Valve

  • It is substantially larger than a conventional drain valve to operate a ball valve. Replace your drain valve with a ball valve to not only clear your tank, but you’ll also prevent sediment from blocking it in the future as a result of the replacement. The following steps will show you how to replace your drain valve with a ball valve: Purchase a brass 3/4″ Ball Valve as well as two 3/4″ dielectric nipples for your project needs. (The nipples have been covered with acrylic to keep them from rusting). Each nipple will be attached to one of the ball valve’s two halves.
  • Application of Teflon tape to the thread of nipples that screw into the ball valve is recommended.
  • Keep in mind that the ball valve’s handle should be turned away from the tank when it is opened. Teflon tape should be applied to the second side of one of the nipples (just three of the four threads on each of the two nipples will be lined with teflon tape).
  • Check to make sure that ALL of the faucets in the home are closed. When this happens, your water heater will generate a vacuum, which will prevent the water from ″pouring out.″
  • Place a bucket and a few towels beneath the drain valve to catch the water.
  • Loosen the drain valve by turning it with an adjustable wrench.
  • Remove the drain valve one turn at a time. Prepare yourself for some water to spill out of your tank
  • even if your tank is completely clogged, you will almost certainly have some water spill out. If the problem is caused by a defective drain valve, you will almost likely have water on your hands.
  • Insert the new ball valve as soon as possible. This shouldn’t take more than a few seconds.
  • Connect a garden hose to your tank and drain the contents
  • You should either replace the ball valve with a conventional drain valve or remove the handle for the sake of safety once your tank has been drained completely. It is possible that the handle will be accidentally opened, resulting in the draining of your tank. As a result, there might be water damage and/or major burns.

Due to the fact that ball valves are bigger than drain valves, they are capable of draining the most obstinate obstructions.

Watch the Video

Move Your Tank Outside

  • In the event that you are planning on replacing your water heater and do not want to invest the time necessary to unclog your drain valve using the techniques listed above, putting your tank outdoors to drain is the best option for you. What you need to do is as follows: Disconnect the water supply
  • Remove the power cord from the wall outlet.
  • Make use of a hand truck to transport your water heater outside
  • and
  • To drain the water from the top of the tank, carefully turn your water heater on its side and allow it to drain.

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How to Flush Sediment Out of a Water Heater

The information contained in this article is provided solely for the purpose of providing general information and does not constitute professional advice.With respect to this material, LANDMARK HOME WARRANTY makes no claim to be an expert in the subject matter, and you should conduct your own research and/or seek the advice of appropriately qualified professionals with respect to your specific circumstances before taking action.LANDMARK HOME WARRANTY makes no claim to be an expert in the subject matter, and you should conduct your own research and/or seek the advice of appropriately qualified professionals with respect to your specific circumstances before taking action.IN THE EVENT THAT YOU USE ANY AND ALL OF THE INFORMATION CONTAINED ON THIS WEBSITE, LANDMARK HOME WARRANTY ASSUMES NO RESPONSIBILITY, AND EXPRESSLY DISCLAIMS ALL LIABILITY.Every homeowner understands the need of regularly cleaning and maintaining their systems and appliances.

  1. Many homeowners, on the other hand, are unaware that cleaning a water heater once a year will effectively eliminate a buildup of silt from the bottom of the tank.
  2. The removal of silt from a water heater can extend its lifespan and increase its efficiency.
  3. Sediment can act as a barrier between the heating elements of a water heater and the water, making it more difficult to heat your home’s showers, dishwasher, and clothes washing machine effectively.
  4. By removing sediment from your water heater, you may save money while also heating your water more quickly.
  5. Find out more about why you should flush sediment out of your tank by visiting this page.
  6. Find out how a water heater functions so that you can better understand how to clean your tank.

1. Turn the Water Heater Off

If you have an electric water heater, make sure the power switch is turned off before continuing.Ensure that your water heater is a gas heater, such as the one seen in the photo above, by setting your thermostat to ″pilot.″ This shuts down the heating element in your water heater, allowing the water to cool down as a result.Ensure that no one in your home is currently attempting to take a shower, wash dishes, or do a load of laundry before beginning this home repair chore.

2. Turn the Cold Water Valve Off

Close the cold water valve and turn it off.When cold water is introduced into the tank and dispenses with the hot water, the water heater circulates the hot water around your home.You may entirely empty your tank of water if you don’t have any cold water coming into it from outside.If you skip this step, you’ll wind up with water constantly flowing into the tank and down the drain, which might result in a significant increase in your monthly water bill.

3. Let the water cool.

Don’t dump scorching hot water down the drain. Allow the tank to cool after the heating components have been turned off. Some bigger water heater tanks might take up to two hours to complete the process.

4. Attach a drain or garden hose to the drain valve on the side of the tank

Drain your water heater by connecting a hose to the drain valve located on the side of the unit. Make certain that the hose is properly screwed on, otherwise you may experience leaks when you drain your water heater tank from the faucet.

5. Place the end of the hose in a bucket or drain.

Don’t let your house flood! Make sure to place the hose’s end in a heat-resistant pail or down a drain when you’re finished. Before you begin emptying the water heater, check to be sure that your drain will not overflow while doing so.

6. Turn on a faucet (or two)

The use of faucets around your house might help prevent a vacuum from accumulating inside your plumbing system. Turn on the ″hot″ setting on your faucets and leave them running. Due to the fact that you have shut off the cold water valve to your water heater, there will be little or no warm water displaced through them.

7. Start draining the tank by turning on the drain valve.

Turn the valve on carefully with a flathead screwdriver, making sure there are no leaks and that the bucket or drain you are emptying the water into is not going to overflow while doing so.

8. After the water heater tank has finished draining the sediment, turn the drain valve off, remove the hose, turn the cold water valve on, and turn the heating elements in the water heater back on. 

You are almost through with your water heater cleanup once you have thoroughly emptied it and removed all of the debris from the tank.In order to refill your tank, close the drain valve and remove the hose from the tank.Turn the cold water valve back on and the heating elements back on by turning the knobs on the thermostat.Check to see that your faucets are still turned on, and after the water is flowing normally again, turn them off.You’ll need to wait around 30 minutes before checking for hot water.

  1. The water heater should have reheated the liters of water contained within the tank once more, this time without sediment!
  2. Do you want to learn more about water heaters and why yours might not be working as effectively as it should?
  3. Make use of our article on the most frequent water heater issues and how to identify and solve them!
  4. When it comes to water heaters (up to 70 gallons), Landmark Home Warranty provides plans that will cover them if they fail due to regular wear and tear.
  5. Some insurance policies even provide coverage for sediment damage!
  6. If your water heater stops working and you have a Landmark Home Warranty protection plan, you may be able to have it fixed or replaced for the price of a service call if the problem is covered by the conditions of your contract.

Give us a call right away or submit a service request online today!If you have any questions, please don’t hesitate to contact us at [email protected] or [phone number].

How Long Does It Take To Drain A Water Heater? [7 Amazing Unknown Factors]

TanklessWaterHeaterExpress is sponsored entirely by its readers.Because I am an Amazon Associate, I receive money when people make eligible purchases.Obviously, if your water heater is experiencing significant issues, it is imperative that you fix it immediately after emptying the water from the heater.However, if you are concerned about how long it will take to drain the entire water, it is important to note that this is dependent on the amount of water available as well as the plumbing structure of your property.However, there are a variety of additional elements that influence the outcome.

  1. Here is a reference on How Long Does It Take to Drain a Water Heater that you can go to for more information!
  2. 1.
  3. Recognize the gravitational pull of water.
  4. When the water is free-falling, the gravitational pull operates at a speed of 33 feet per second.
  5. As a result, the downward force is proportional to the rate of water flow and the inner diameter of the pipeline.
  6. As a result, the downward force is dependent on the diameter of the outline pipe as well as the type of material that was utilized in the pipeline installation.

If the surface is smooth, it will allow for a greater volume of water to be discharged more quickly, increasing the rate at which the water drains.Aside from that, the flow rate is also a factor to consider.If the flow rate is high, the gravitational force will be larger as a result.2.

Inspect the pressure head for damage When it comes to pressure, the pressure head is the next most significant consideration.High-pressure water can be forced into the drain pipe due to the presence of a pressure head.1 foot of elevation decrease equals 0.433 psi of pressure head, according to the formula for elevation drop.

This implies that if your heater is situated on the top, the pressure head should have a large capacity to accommodate the pressure.As a result, the greater the pressure head, the better it is for both the source and the output of the system.3.

  1. Be familiar with the pipe material.
  2. The drain pipe component makes it even more obvious how much time you will need to spend clearing the tank of debris.
  3. There are two factors to consider, the internal diameter and the outer diameter, which are as follows: It, combined with the material from which the pipe is constructed, defines the volume capacity of the pipe.
  4. If the friction is strong, the flow rate will naturally slow down as a result of the friction.
  5. If it is low, on the other hand, the water flow rate will increase.
  6. In addition, if the pipe has a large diameter, it will store more volume while maintaining a low pressure level.

As a result, the one-inch pipe can provide you with both high force and individual volume to drain down the pipe, making it more suitable and convenient.4.Have a basic understanding of hydraulics.

It is the force and air pressure available from the tank that are responsible for the hydraulics of motion down the drainpipe.While the tank is being drained, check to see that there are no airlocks that need to be addressed.It occurs more frequently when the liquid is static and air bubbles have entered the liquid.As a result, the drain flow is stopped in this situation.To avoid any form of pressure, be certain that there is no airlock within the pipe.

In addition to this, the hydraulics has an impact on the flow rate of the pipe when it is vertical.You will need to overcome the airlock that has formed in your system if at all possible.

Other Factors Affecting the Flow

In addition to these four criteria, there might be a variety of other factors that influence the period of flow.You may view them by clicking on the links below: 1.The first factor to consider is the amount of water available.If you have a tiny tank, it will just take you 1-2 minutes to completely drain it out.However, if the tank is larger, the process may take longer.

  1. 2.
  2. Sedimentation Another thing to consider is the formation of deposits in the drainpipe.
  3. If there is more sediment, it will obstruct the flow rate and cause it to take the longest possible amount of time.
  4. 3.
  5. Another consideration is plumbing, whic

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