What Is A Non Condensing Tankless Water Heater?

Condensing vs Non-Condensing Tankless Water Heaters

Tankless water heaters have gained popularity as a result of their efficiency and energy-saving characteristics, and are currently being utilized by the majority of people.In accordance with the name, consumers will no longer be required to cope with their regular water heating procedure, which requires them to keep hot water in their storage tanks.Older types consume more energy since they must reheat the water on a regular basis, whereas tankless water heaters produce hot water on demand.Because of the ongoing quest to create better and more energy efficient contemporary appliances that help us save money and energy, manufacturers have been forced to build more innovative products.A newer invention in tankless water heater technology, condensing water heaters promise to provide a number of potential features that boost both the efficiency and the longevity of the water heater over time.

  • Tankless water heaters are extremely simple to use.
  • The water that passes through the pipes is heated before it is made available for consumption.
  • However, there are two most prevalent types of tankless heaters that one should take into consideration before making a purchase decision.

Condensing vs Non-Condensing Tankless Water Heaters | A Comparison

Condensing Tankless Water Heater:

During the time it takes you to turn on the switch and prepare to utilize your hot water supply, the process of heating water through combustion and a gas burner is underway.As exhaust gasses are produced, they can also assist the tankless water heater in heating the water contained within the unit, as the device generates more heat.This is the reason why condensing water heaters are more energy efficient than other types of water heaters.In a condensing tankless water heater, there is a second heat exchanger that is responsible for recycling the exhaust gas that is used to heat the water.This implies that even before the water enters the main heat exchanger, it has already been exposed to the heated gasses that assist cold water in reaching the required temperature throughout the heating process.

  • During the process of extracting heat from exhaust gases, it will also generate vapor or steam, which will condense when it cools.
  • Because the exhaust gases from condensing tankless water heaters are not as hot as those from non-condensing tankless water heaters (about 100 degrees Fahrenheit), the ventilation required for condensing tankless water heaters is not as expensive as that required for the other kind.
  • However, owing to condensation, this may also result in corrosion of the metal.
  • In order to avoid this from occurring, it is essential to use materials that are resistant to corrosion, such as stainless steel alloys.

Non-Condensing Tankless Water Heater:

Non-condensing water heaters, as opposed to condensing water heaters, will instantly expel the exhaust gases outside, rather than inside the unit.This sort of tankless water heater warms the water by using a gas burner, and because the gasses are evacuated immediately, it is considered environmentally friendly.It dissipates around 20% of the heat that contributes to the water becoming hotter.Non-condensing tankless water heaters additionally necessitate the use of more specialized venting materials since the temperature can approach 300 degrees Fahrenheit.Because of the high heat generated by the condensing type, the standard PVC vents that can be utilized with it may be insufficient……………………………………

  • In light of the above, it would be more expensive to install a venting device for this specific model of tankless water heater.

Which is Better?

When everything is taken into account, most people would agree that a condensing tankless heater is more efficient when it comes to heating your water supply.However, it should be noted that owing to the temperature of the air and the surrounding environment, this form of condensation may not condense at all at times.Users should be aware that a non-condensing type is also effective; however, they should be prepared to incur some additional expenditures due to the fact that it may necessitate additional ventilation units.Tankless water heaters that are non-condensing are less expensive than tankless water heaters that are condensing.On the other hand, condensing tankless water heaters have the potential to lower the costs associated with keeping it operational in general.

  • It has previously been proven that the condensing kind of water heater is around 10 to 15 percent more efficient than the non-condensing type of water heater.
  • Other considerations, on the other hand, can be made.
  • If this were not the case, there would be no need for two different sorts to be offered on the market.
  • The majority of non-condensing varieties are slightly smaller in size than the condensing ones.

It would likewise necessitate the use of indoor combustion air, but it would only necessitate minimum maintenance performed by specialists.Condensing tankless water heaters do not require any combustion air in the home, but they do require annual maintenance, which might vary based on the sort of water in your neighborhood.

Things to Consider Before Buying Water Heater

The ability to save energy consumption while yet maximizing the performance of any home equipment that we are considering purchasing is essential.A tankless water heater would undoubtedly demand you to make a larger financial commitment, one that may double or treble the amount you paid on your regular water heater in order to be successful.However, it is worth considering because it will save you a significant amount of money on your monthly bills as well as allow you to take more hot showers for many years to come.Aside from deciding on the brand, size, and a few other features, it is always a good idea to have a professional inspect your home so that they can anticipate any other repairs or modifications that may be required prior to installing your new roof.Not only does it offer you more time to budget the necessary funds, but it also provides you the peace of mind that your home is ready and that everyone is secure in it.

  • Hi, Hello, my name is Luis.
  • ″TheHeatersGuide″ is written by an author.
  • I am a Mechanical Engineering graduate with a bachelor’s degree.
  • At the moment, I’m investigating heating technologies.

However, I have learnt many different house heating approaches and am still learning about home heating technology today.And I like disseminating the results of my study and reviews.

Condensing vs. Non-Condensing Water Heater

Views: 293 Home » Condensing Water Heater vs Non-Condensing Water Heater When it comes to tankless water heaters, the phrases condensing and non-condensing are frequently used interchangeably.But what precisely do these terms signify is unclear.The distinctions between these two types of tankless heaters can be complicated and difficult to understand, so we’ll keep it as easy as possible in this post.We’ll also discuss the advantages and disadvantages of condensing vs.non-condensing water heaters, as well as which is the more efficient of the two.

What is Condensation in a Tankless Water Heater?

The Rinnai RUR98iN Condensing Water Heater from the inside out.Check the Price Right Here.Tankless water heaters, as opposed to storage tank water heaters, do not store and heat water in a tank as they do.As opposed to this, they work extremely hard and quickly to heat the water as it passes through the heat exchanger within the system.This is heated by the use of extremely high-intensity combustion, which produces extremely hot gases such as water vapor or steam.

  • This is a naturally occurring by-product of the process, and it results in condensation when the steam/vapor cools down during the process.
  • Condensed water has a low pH, and because of its acidic nature, it is corrosive to the unit and should be avoided.
  • When comparing a condensing tankless heater to a non-condensing tankless heater, the way in which the condensation is handled is the key difference.

What’s a Non-Condensing Tankless Water Heater?

In contrast to condensing tankless water heaters, non-condensing tankless water heaters merely remove hot condensation by forcing it out of the unit and into the ventilation system.Because these gases are extremely hot (about 300 degrees Fahrenheit) and acidic, the ventilation system must be capable of withstanding their destructive effects.This necessitates the use of corrosion-resistant venting materials such as stainless steel alloys, as ordinary materials such as PVC vents may not be able to withstand the high temperatures generated by the gases.As a result, the energy contained in the hot gases that haven’t contributed to the heating of the water has been effectively squandered.The gases consumed energy and were subsequently evacuated from the system, resulting in no benefit to the system.

  • This is why non-condensing units are less energy efficient than condensing units (about 80% energy efficient), because around 20% of the energy they consume is squandered during the condensation process.

What is a Condensing Tankless Water Heater?

  • Because they put these gases to good use, condensing tankless heaters are far more energy efficient than traditional tank heaters. These systems work by using the heat from the exhaust fumes to contribute to the heating of water through the use of a second heat exchanger. The vapor and gases are expelled via the vent at a considerably lower temperature (approximately 100oF). This procedure recovers a significant portion of the lost 20 percent of energy, resulting in an overall energy efficiency of up to 98 percent. There is, however, one condition. Because the condensation is caught within the unit, it results in a water collecting collection system. This can result in corrosion of the water heater’s internal components. This is why condensing units must be constructed of considerably higher-quality, non-corrosive materials in order to ensure that the tankless heater can be used for the duration of its useful life. So, what happens to the water that has accumulated within the device is unclear. Water is first neutralized through a process of filtration or dilution since it is very acidic and potentially harmful to the environment. After that, the water may be discharged from the device. There are various ramifications of this process: Condensing units are more expensive than non-condensing units because of the higher quality of materials they require
  • while condensing unit venting is not as expensive as non-condensing unit venting, it is still a good idea to invest in non-corrosive venting materials such as stainless steel alloys.
  • Because of their increased energy efficiency, condensing units help you save money on your power costs. However, they require extra care, such as flushing the units and cleaning the condensation trap and filters.
  • If condensation is not permitted by the climate, temperature, or environment, the model will be somewhat bigger than the non-condensing model due to the additional pieces contained inside this model.

Which Should I Buy?

When comparing the advantages and disadvantages of both types of water heaters, it becomes evident that condensing water heaters offer more advantages and are more efficient.Upon closer inspection, however, it will become evident that there is a trade-off between these two units, which makes the decision a bit less straightforward.After all, non-condensing units wouldn’t be on the market if they didn’t provide some sort of value to the consumer.So, how do these stack up in terms of advantages and disadvantages: They are more compact, less costly, and easier to maintain than condensing units.On the other hand, they need the purchase of costly ventilation devices and are less energy efficient.

  • When compared to standard air conditioners, condensing units save energy and require less expensive venting units.
  • However, their initial costs are greater, they’re often larger, and they require more maintenance depending on the quality of the water that is used in the system.
  • Which model you choose will be determined by your unique requirements and estimates on purchase, installation, maintenance, and energy expenses, among other factors.

Before You Buy a Tankless Water Heater

Making the selection between a tankless water heater that is condensing and one that is not condensing is simply one of the considerations you must make when purchasing a tankless water heater.Numerous other factors must be taken into consideration, such as whether to use natural gas or electricity, the size of the unit, the cost of purchase and installation, the brand, the environment in which you reside, and so on.In our comprehensive guide on how to buy a tankless water heater, we answer all of these concerns as well as disclose the finest tankless water heaters (both electric and gas) available on the market right now.Hopefully, it will be of use to you in making an informed decision.If you’d like to understand more about the differences between tankless heaters and storage tank heaters, read our article.

  • Visit this page to see all of the most frequently asked questions regarding tankless water heaters.

Non-Condensing Gas Tankless Water Heaters

Tankless water heaters by A. O. Smith, which are non-condensing gas and propane models, deliver unlimited hot water for your house. Water heaters by A. O. Smith are non-condensing tankless systems that are made to last.

More About Each

How Does a Non-Condensing Tankless Water Heater Work?

A non-condensing tankless water heater from A.O.Smith conserves space while providing continuous hot water for your house or business.Non-condensing technique involves the use of a single heat exchanger to heat the water to the correct temperature without causing condensation.Water is circulated via a heat exchanger, where it is heated to the correct temperature by the hot exhaust gases that pass through the system.

  • The exhaust venting is responsible for removing any extra heat that has not been delivered to the water.
  • In order to reduce the danger of corrosion, this exhaust is heated to a greater temperature than that of a condensing tankless heater.
  • Although non-condensing heaters are capable of withstanding greater temperatures, they often require metal exhaust venting.
  • An A.

O.Smith non-condensing tankless water heater, when paired with a 15-year limited warranty, may offer years of hot water for your house.remove circle outline When it comes to tankless water heaters, what is the difference between a condensing and a non-condensing model?In order to make the most of the energy given to the system, condensing tankless heaters employ a two-stage heat exchanger configuration.

  1. Non-condensing tankless water heaters use a single heat exchanger, which allows them to expel more heat into the exhaust gases than condensing tankless water heaters.
  2. add circle outline Do tankless water heaters provide an unlimited supply of hot water?
  3. The use of a tankless water heater, when properly designed, may provide a continuous flow of hot water.
  4. add circle outline What factors should I bring up with my contractor before making the decision to purchase a tankless water heater?
  5. Is a drain required for tankless water heaters?
See also:  How To Reignite Pilot Light On Water Heater?

Condensate drainage is required for condensing tankless water heaters, but not for non-condensing tankless water heating systems.What should I do to prevent my tankless water heater from becoming a frozen mess?All Tankless hot water heaters by A.O.

Smith are equipped with built-in freeze prevention.If, on the other hand, the heater is situated outside, you will need to empty the water from the unit during a power outage in order to keep it from freezing.add circle outline In order to install a gas tankless water heater, what should I take into consideration?What exactly do I require?Prior to installation, you will need to assess the temperature of the incoming ground water, the layout of your home’s pipes, and the size of the water heater that is appropriate for your needs.What is the best location for installation?

With the proper pipes, a tankless water heater may be put almost anyplace in your home, including closets, garages, bathrooms, and other areas.If you live in a warm region where there is no danger of freezing, a tankless water heater may be put on the outside of your home, saving you valuable inside space.add circle outline What size tankless hot water heater do I need to meet my needs?The appropriate size of a tankless water heater is determined by a variety of factors, including the kind of equipment you own, the number of people who live in your house, and the temperature of the incoming water.It’s best to talk to your installer about it, but you can also use our online XPERTTM Product Selector, which is also available as a downloaded app.add circle outline What is the most energy-efficient gas water heater on the market?

  1. Condensing tankless models are the most energy-efficient platform available for tankless water heaters, and all A.
  2. O.
  3. Smith condensing units have a UEF of or greater than 0.90.
  4. (Uniform Energy Factor).

Benefits of Non-Condensing Tankless Water Heaters

Continuous Hot Water

When you install a non-condensing tankless water heater in your house, you can expect to have continuous, on-demand hot water. If you add an auxiliary hot water recirculation pump, you can have immediate hot water as well.

Space Savings

It is possible to install non-condensing tankless water heaters in small or tight places, either inside or outside of your home, in order to maximize space utilization and save money on energy costs.

Energy Savings

In contrast to condensing tankless water heaters, non-condensing tankless water heaters exhaust the extra heat created during the heat exchange process, resulting in reduced corrosion and degradation of the water heater and a longer service life.

Compare: Non-Condensing Gas Tankless: ATI-510U 199,000 BTU Condensing Gas Tankless:ATI-540H199,000 BTU
Single Shower Length* Unlimited Unlimited
Showers Back-to-Back* Unlimited Unlimited
Showers at the Same Time* 2.6 showers 3.1 showers
Maximum Tub Size* Unlimited Unlimited
Continuous Hot Water check_circle_outline check_circle_outline
Space Savings check_circle_outline check_circle_outline
Energy Efficiency check_circle_outline check_circle_outline
UEF 0.82 0.93
Warranty 15 Years 15 Years
*Many factors affect the actual performance of a water heater. This represents our closest approximation of your likely experience with this water heater in your local area, but actual performance may vary depending on factors beyond our ability to control or estimate.

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Contractor Resources

  • Detailed Instructions for Setup Installing a gas tankless water heater is simple when you follow our installation instructions. See the document
  • Guide to Obtaining Resources Match the flow rate to the requirements of your customers. See the document
  • Cross-Reference Tool is an acronym that stands for Cross-Reference Tool. Look for replacement products that are NAECA-compliant. Make use of a tool.

Condensing vs Non-Condensing Tankless Water Heater Comparison

Please keep in mind that this content may contain affiliate links.This means that, at no additional cost to you, we may gain a small profit on purchases made via our links.Condensing and non-condensing tankless water heaters are the two most common types of gas-fueled tankless water heaters.Each has its own set of pros and downsides that should be taken into consideration.Examine the condensing versus non-condensing tankless water heater debate to understand how they differ and how they stack up against one another in terms of performance.

  • Tankless Water Heaters vs.
  • Traditional Water Heaters (Related)

How Water is Heated in a Tankless Water Heater

Whenever you turn on your hot water faucet, water is drawn into the system through the intake line.A flow sensor in this pipe then sends a signal to the control panel, instructing it to commence the heating procedure.Activation of the exhaust fan is followed by the opening of the gas valve and the ignition of the burner.Thermal energy is extracted from the flame and transferred to cold water that is flowing through the system’s tubing by the primary heat exchanger.Because it adds a little amount of cold when the water exits the exchange chamber, a mixing valve can assist prevent the superheated water from becoming excessively hot.

  • Just beyond it is a temperature sensor, which compares the water’s temperature to the temperature parameters that you have selected.
  • The presence of any variance results in the transmission of a signal that controls the valves, which includes a flow-regulating valve, to bring the outgoing water to the appropriate temperature.
  • Finally, the exhaust is drawn via one or two sealed vents and vented securely outside of your home to the outside air.
  • It’s important to note that the method varies slightly based on the system you’re using, but the main procedure is the same for all gas models.

In addition, see our Buying Guide for Tankless Water Heaters.

Condensing Tankless Water Heaters

Have you ever considered how wasteful an open system may be?If you haven’t, you should.Closed systems recycle materials, but in an open system, something is constantly lost in the process of recycling materials.

Condensing water heaters correct this frequent issue by using the exhaust gas to further heat the water, rather than allowing all of the warm (but not very breathable) hot air to escape unnoticed and untreated.

How They Work

Condensing systems are equipped with a second heat exchanger and are meant to recycle exhaust through the system before releasing it into the atmosphere.Despite the fact that these gases are not particularly hot (typically around 100 degrees), as they pass through the secondary exchanger, some of the heat they contain is transferred to the incoming cold water.The water is subsequently sent through the main heat exchanger, where it is heated to the required temperature using far less energy than previously.

Another beneficial side effect of recycling exhaust is that it causes vapor to develop, which then cools and condenses, allowing it to be recycled back into your water supply once again.This can help you save a little money on your water bill, but it also shows to be a drawback of this system.

The Pros

The act of recycling exhaust not only saves money on fuel and heating expenditures, but it also helps the environment.The exhaust from a gas system can reach temperatures of up to 300 degrees Fahrenheit, necessitating the use of specific materials in the flu system.As a result, the ventilation system of your water heater is likely to account for a significant amount of your total outlay.

Condensing water heaters draw heat from the exhaust and use it to chill the water, allowing it to be used at much lower temperatures.Because of this, less expensive materials may be employed in the ventilation system.The overall efficiency of a condensing type is roughly 90 percent, making it one of the most energy-efficient options available.

The Cons

When it comes to condensing tankless water heaters, corrosion is one of the most serious problems. As a result of the condensation process, the lifespan of various components is significantly reduced. A condensing water heater made of stainless steel alloys is typically the greatest option for dealing with this problem, as shown below.

Non-Condensing Tankless Water Heaters

There is a large proportion of gas-powered tankless water heaters that are non-condensing in nature. When switching from a typical tank model to one that takes use of existing ventilation, these systems are frequently the first kind that customers consider.

How They Work

Non-condensing tankless water heaters are the most basic type of gas-powered tankless water heater available. As a result, they only feature a single heat exchanger. The exhaust gasses are much hotter when they exit the unit, and they are released straight to the atmosphere rather than being looped back through the heater as previously.

The Pros

When switching from a typical tank type, it is generally possible to repurpose existing fixtures and equipment.This implies that you will spend less money on a flu system, which is often the most expensive component of most water heater systems.Furthermore, non-condensing types are less expensive than their condensing counterparts, making the first investment in a tankless water heater rather enticing.

Their somewhat smaller size and the fact that they just require professional care, as opposed to other types that require both DIY and expert attention, are two further appealing characteristics.

The Cons

The exhaust from a tankless type is quite hot, and it has the potential to destroy the vents unless they are made of a more durable and expensive material such as stainless steel.If your present water heater’s flu system is older or constructed of less lasting materials, this will result in a significantly greater initial cost.These versions also have a rather low efficiency of around 80%.

While this is significantly higher than the average operating cost of most tank models on the market, it still leaves plenty of potential for improvement if operational expenses are your top priority.

The Verdict: Condensing vs Non-Condensing Tankless Water Heater

Now that we’ve had a look at these two types of tankless water heaters and their specific characteristics, it’s time to make a comparison in the argument between condensing and non-condensing tankless water heaters.The following are some of the most significant categories in which the two systems differ.Although we personally lean towards the condensing side because to the fact that the technology is now somewhat ahead of other varieties, we cannot advise you on which one to choose because everyone’s requirements are a bit different.


When it comes to efficiency, condensing tankless water heaters exceed its non-condensing counterparts, achieving 90 percent efficiency compared to 80 percent efficiency for non-condensing tankless water heaters. Both alternatives are more energy efficient than electric vehicles.


Both systems emit minor quantities of harmful vapors into the atmosphere, which is one of the disadvantages of utilizing natural gas as a fuel. In comparison to any other tankless water heater alternative now available, condensing systems, on the other hand, produce far less carbon dioxide.


Because of the additional heat exchanger, condensing versions are often more costly than non-condensing units.Over time, the additional components may necessitate some additional maintenance due to the increased workload.While the long-term advantages outweigh the original cost in terms of utility savings, the initial outlay may be prohibitive for certain people on a limited budget.

Non-condensing devices are less expensive in the short term.


When properly maintained, a gas-powered tankless water heater may easily outlast its original manufacturer’s warranty of 20 years.In both the condensing and non-condensing types, there are components that will wear out a bit more quickly in one than in the other.A high-grade, corrosion-resistant material must be used in the construction of the pipes that carry the condensation in condensing systems.

These may get deteriorated over time and require replacement.Heat transfer through the exhaust ventilation of non-condensing models is significantly higher than that of condensation models, which can lead to deterioration or leaks over time.


Condensing models save even more money since they recycle their wastes to generate more heat. This byproduct, depending on how the condensation line is linked, can also be recycled back into your water lines, which can result in a minor reduction in your water costs over time.

6 Best Non-Condensing Tankless Water Heater in 2022 Reviewed

Are you looking for the best non-condensing tankless water heater on the market?Continue reading to find out what I have in store for you.If we’re being honest, condensing tankless water heaters are fantastic.

They are more energy efficient and do not necessitate the use of costly steel ventilation systems.The downside is that they are rather expensive, often exceeding double the price of a non-condensing type.So, if you are on a tight budget, a non-condensing tankless water heater is the best alternative available to you.Compared to tank versions, these are at least 30 percent more energy efficient.

This study will cover the six best non-condensing tankless water heaters that you should consider purchasing in 2022 after doing extensive testing, comparison, and evaluation.So let’s get this party started right away.

REVIEWS: Best non-condensing tankless water heaters

1. Rinnai V94iN

10GPM non-condensing tankless water heater

  • Maximum flow rate: 9.8 GPM
  • installation type: indoor
  • fuel type: natural gas
  • capacity: 180,000 BTU
  • Price may be found on Amazon. The Rinnai V94iN tankless water heater, which is the first on the list, is a non-condensing tankless water heater. It is such a dependable heater, and I am so happy with it, that I have included it in my list of the best tankless water heaters for large homes. In warm areas, the V94iN can deliver up to 9.8 GPM of hot water flow, whereas in cold climates, it may deliver as little as 4 GPM. Run up to 5 high flow fixtures such as showers at the same time without suffering a low flow or temperature decrease issue, according to the manufacturer. Rinnai has a maximum heating capability of 180,000 BTUs and can work on as little as a 10k BTU input to achieve maximum efficiency. I’ve also noted that this model is equipped with scale detecting technology, which notifies the homeowner when an excessive amount of scale accumulates. There are two versions of the V94iN available: one that runs on natural gas and one that runs on liquid propane. In addition, you will receive a 10-year warranty on the heat exchanger, provided that you keep the heater in good working order. Features: Impressive performance
  • Ideal for large houses with up to four bathrooms
  • Consistent 9.8 GPM hot water flow
  • Built-in scale detection and alarm function
  • Available in natural gas and liquid propane options.

  • The average energy efficiency of 0.81 UEF

2. Rheem Performance Plus

  • The maximum flow rate is 8.4 GPM
  • the installation is outside.
  • Natural gas or liquid propane
  • 180,000 BTU capacity
  • fuel: natural gas or liquid propane
  • Check the price at HomeDepot.com The Rheem Performance Plus series tankless water heater is the next item on the list. In a situation where the maximum temperature rise is 35°F, the non-condensing model can offer up to 8.4 GPM of hot water, which is adequate to give more than three showers and a sink at the same time. It is an outdoor model, and you will need to use it to construct the exterior wall of your home. It does not necessitate the use of special venting, which saves you money. The heater is equipped with its own freeze protection, which can withstand temperatures as low as -30°F. If you reside in a place where the temperature dips below that level, you should avoid installing this device. In addition, it contains a remote digital thermostat for temperature control, a smart burner that reduces NOx emissions, and a heat exchanger that has a 12-year manufacturer’s guarantee. Pros With 0.82 UEF, it is more energy efficient than Rinnai.
  • Ideal for homes with 2-3 bathrooms
  • Can produce up to 8.4 GPM hot water at a temperature increase of 35°F
  • freeze protection to -30°F
  • and is CSA approved.
  • Cons It is not recommended for use in the northern United States, where temperatures can fall below -30°F.
  • Not in a neighborhood where there is a significant danger of theft

3. Eccotemp 45HI

  • The maximum flow rate is 6.8 GPM
  • the fuel is natural gas or liquid propane
  • the unit is indoor
  • the input temperature is 140,000 BTU.
  • Price may be found on Amazon. This gas-fired tankless water heater from EccoTemp is the company’s biggest model. When operating at 35°F rise, this non-condensing type can produce up to 6.8 GPM hot water and has a minimum activation flow of 0.8 GPM. Activation flow is somewhat more than normal here, which results in cold water if the lavatory faucet is operated alone, as was the case in the previous example. A full stainless steel finish and a rustproof construction distinguish this indoor variant from the rest of the line. It is promised that the firm will have an energy efficiency factor of 0.82. The 45HI is fitted with its own antifreeze system and comes with a heat exchanger that is covered by a 10-year guarantee. In order to broaden the appeal of Eccotemp, which is a relatively new brand, the company has placed this product in a lower-priced pricing bracket. Purchase one for around $600 and take it home with you (at the time of reviewing). AdvantagesComparatively less expensive
  • It is available in both natural gas and liquid propane varieties.
  • Suitable for supplying hot water to up to two and a half baths
  • Features Protection from freezing temperatures
  • Cons It is discovered that the temperature constancy is inadequate
  • Additionally, it has a low level of dependability, in my opinion.
  • It is not compatible with a hydronic or recirculating system.
  • Does not function at elevations greater than 3000 feet above sea level.

4. Rinnai V53De

  • The maximum flow rate is 5.3 GPM
  • the unit is designed for outdoor use
  • the fuel is natural gas or liquid propane
  • and the input temperature is 120,000 BTU.
  • Price may be found on Amazon. Its maximum hot water flow rate is 5.3 GPM at 35°F increase, making the Rinnai V53De an ideal tankless water heater for medium-sized households. During my testing, I discovered that the unit can accommodate up to two showers at the same time, as well as a sink. Speaking of efficiency, the unit has a consistent energy factor of 0.81, which is above the industry average. The V53De is an outdoor model that saves you both space and money by eliminating the need for a costly ventilation system. It is available in both natural gas and propane versions, allowing you to choose based on which fuel is most readily available in your location. Due to the fact that it is an outside device, the heater is equipped with a remote digital thermostat that can be set wherever you like for convenient temperature control. In addition, it provides notifications when the water heater need cleansing or other maintenance. Strong construction and dependable performance
  • the outside unit saves space and money by eliminating the need for venting.
  • The device is protected from harm due to an improved scale detecting mechanism.
  • Provide hot water for up to two bathrooms at a time.
  • Cons The energy efficiency of the building is average.
  • Not the best choice for a neighborhood that is prone to thievery

5. Fogatti FGD24IN

Best budget non-condensing tankless water heater for cold climate

  • Cons The energy efficiency of the building is mediocre.
  • Not the best choice for a neighborhood that is prone to robbery.
  • Price may be found on Amazon. In terms of value for money, the Fogatti FGD24IN is a respectable non-condensing tankless water heater for those on a tight budget. It is estimated to cost approximately $500 at the time of review and can produce an incredible 4.2 GPM of hot water at a temperature of 67°F increase. In colder climates, it can easily manage two showers at the same time. (Remember that the outcome of the majority of the models we reviewed here is at a temperature rise of 35°F.) It is equipped with a smart burner that generates the most heat possible, as well as a highly efficient food-grade copper water tank that transfers the most heat possible to water. The Fogatti has a heating capacity of 170K BTU and a uniform energy factor of 0.82, which is, in my opinion, an average value for non-condensing models of this kind. This tankless water heater is equipped with anti-freeze, dry fire, and other important safety features. CSA-certified, the FGD24IN comes with a 2-year guarantee, which is the shortest available. Yes, that is an unexpectedly low figure. Having said that, I discovered that obtaining technical help from Fogatti is really difficult. I attempted to contact their customer service department for assistance with an error number and the ignition, but no one answered the phone. So that’s something to bear in mind if you decide to go with this particular design concept. Pros For a medium-sized family living in a chilly climate, this is an affordable and reasonable solution.
  • Design that is corrosion proof and durable
  • CSA approved model.
  • Cons Getting in contact with customer service is really difficult
  • There is just a 2-year warranty.

6. Marey GA10LP

Best battery powered non-condensing tankless water heater

  • The maximum flow rate is 3.1 GPM
  • the unit is designed for indoor use
  • the fuel is liquid propane or natural gas
  • and the input temperature is 80,000 BTU.
  • Price may be found on Amazon. The Marey GA10 is an excellent choice for areas that have regular power outages, as well as for off-grid and hunting cabins, as it does not require any energy to operate. In order to operate, just a 2D battery must be used, which is readily available in most places. The non-condensing tankless water heater is also capable of operating at low water pressure conditions. Having said that, the Marey has a maximum hot water output of 3.2 GPM at a temperature increase of 35°F. The benefit of this is that you may use a single shower or numerous sinks at the same time. The heating capacity of 80K BTU provides hot water more quickly and has an efficiency rate of up to 87 percent, making it more energy efficient. The Marey GA10 is equipped with a triple control knob system that allows for the regulation of temperature, water flow, and gas flow. The one thing I didn’t care for about this water heater, or you could say that it is a disadvantage of using a non-electric heater, is that it does not have a digital display and that the temperature adjustment is only changeable for winter and summer. There is no option for a per-degree adjustment. According to the EnergyGuide, the unit has an annual energy cost of around $542. It’s ideal for a couple or a small family of 1-2 people. Pros It is less expensive
  • it does not require energy, making it ideal for areas where there is a shortage of electricity.
  • Small families and hunting cabins will find this unit to be ideal.
  • Cons During my research, I discovered that the temperature can change at times.
  • There is no digital display, and the temperature is controlled precisely.
  • A high rate of activation flow

What is a non-condensing tankless water heater?

When a non-condensing tankless water heater (NG/LP) is used, the hot exhaust gases from the tankless water heater are vented directly into the atmosphere.A portion of the energy is lost to the atmosphere in the form of hot gas released from the tankless water heater, and as a result, non-condensing tankless water heaters are not the most energy efficient tankless water heaters.Non-condensing tankless water heaters are less costly since they are less sophisticated, but they require an expensive steel venting system, which is not included in the price.

Should I buy condensing or non-condensing tankless water heater?

A condensing tankless water heater is more energy efficient than a traditional tank water heater because it utilises the energy from hot exhaust gases to pre-heat the water.These are at least 90 percent energy efficient and do not necessitate the use of expensive steel venting systems, which would otherwise be required.You may save money by using PVC venting.

It is possible, however, that a condensing tankless water heater will cost double the price of its non-condensing equivalent.As previously stated, a non-condensing tankless water heater loses a portion of the energy in the form of hot gases, making them less than 85 percent efficient.Because of the high temperature of the gas, it is necessary to use steel for the venting, which increases the cost.For this reason, if you desire excellent efficiency and long-term savings, a condensing tankless water heater is the best option.

Alternatively, if you are working with a limited budget, a non-condensing model would suffice.Hi!In Aberdeen, South Dakota, I work as an HVAC mechanic and am also the author of HWT.Providing plumbing services has been a part of my business for more than a decade.In my more than ten years of expertise in the sector, I have mostly dealt with water heating systems.

  1. With the use of my blog, I want to be able to share some of my professional expertise and knowledge with you in the future.

Condensing vs Non-Condensing Tankless Water Heater

Tankless Water Heater Comparison: Condensing vs.Non-Condensing You have made the decision to purchase a tankless hot water heater, which is excellent!You’ve looked at models powered by electricity and natural gas.

You’ve done your homework and are ready to make your purchase so that you may enjoy limitless hot water for years.What happens after that is that the dealer informs you that you may choose between condensing and non-condensing models.But what exactly does this mean?Difference Tankless water heaters are available in two varieties: condensing and non-condensing.

Tankless water heaters are becoming increasingly popular as an alternative to traditional water heaters.This increase is due to the fact that they are more durable, with a lifespan of more than 20 years.The best part is that they deliver an unending supply of hot water.They both function in the same way, and the process is basic.

  1. Start by turning on the hot water faucet.
  2. The unit is supplied with cold water.
  3. The gas burner is turned on.
  4. In the heat exchanger, water is pumped in.
  5. Water warms up as it flows through the heat exchanger.
  • As a consequence, you will get a wonderful, consistent stream of hot water from the faucet. Now comes the most important part of the story. The process of igniting the gas produces exhaust gases, and those fumes must be disposed of in some manner. So, where do they go from here? Check out the differences between condensing and nonconsumption water heaters in this article. Tankless Water Heater with Condensing Technology Condensing gas water heaters heat the water by reusing the hot exhaust gases that are generated within the system. Yes, they recycle the hot gases, which allows them to operate at a more energy-efficient level. Consider the following in further depth. It contains a second heat exchanger, which is unique to a condensing tankless water heater. The hot exhaust gases return to the system through the secondary exchanger, where they contribute to the heating of cold water as it enters the system. Following that, the water is sent through the primary heat exchanger to finish its journey. It continues to heat up to the correct temperature in this location while using far less energy. The remainder of the gas exhaust is expelled out the vent. Because the leaving vapor is cold, you may use a basic PVC pipe to serve as a ventilation system. The recycling of gas exhaust has an unintended consequence. Because condensation occurs when gases drop to a certain temperature, it is known as a ″condensing water heater.″ The recycling of gases results in the formation of water vapor, which cools and condenses. Eventually, you will have to drain the condensation that has formed in the system from the system. The condensation from certain devices may even be recycled back into your water supply. Although this functionality appears to be ideal, the condensation that develops as a result of using this sort of unit is the most significant drawback. Condensation has the potential to cause corrosion over the long run. In order to avoid this, installers would utilize non-corrosive materials such as stainless steel pipes. Pros Efficiencies in terms of energy Your carbon impact may be reduced by using condensing units. Because of their high efficiency (about 90 percent), they are the most efficient option.
  • Materials for ventilation that are less expensive. The majority of the heat from the exhaust is removed by a condensing system. This advantage eliminates the need for a costly ventilation system.

Cons Corrosion. Corrosion is caused by condensation. As a result, certain components have a shorter useful life than others.

  • Tankless water heater that does not condense Non-condensing water heaters fuelled by natural gas are significantly more widespread than condensing water heaters. So they are frequently the primary choice when replacing an older tank model……………….. The rationale for this is that the current ventilation may be utilized by the installation. The installation of a new ventilation system for these models might be the most expensive component of the project. In this case, it makes sensible to make advantage of an existing ventilation system that is available. It is important to note that non-condensing water heaters do not recycle exhaust gases, as do condensing water heaters. As a result, the temperature of the discharged gas is significantly greater than that of the condensing units. It may become as hot as 300 degrees Fahrenheit. Consequently, the ventilation system must be able to tolerate the heat without breaking down. Pros: It’s simple to convert. When switching from a tank water heater to a tankless water heater, you may make use of your current ventilation system.
  • Price. Non-condensing types are significantly less expensive than condensing units.
  • Size. Non-condensing systems are often less in size than condensing systems.
  • Vent System is a disadvantage. The exhaust from non-condensing versions is extremely hot to the point of being dangerous. When a vent system is created from scratch, it might be the most expensive component of the work.
  • Efficiencies are lower. When compared to a condensing unit, which is 90 percent energy efficient, the efficiency of the heat pump is around 80 percent.

Does home insurance cover tankless water heaters, including condensing and non-condensing models?Yes.Homeowners insurance is designed to assist you in the case of an unforeseen accident or emergency that occurs in your home.

Water heater damage to your home and personal belongings is often covered under this policy if the initial water damage was caused by a danger covered under your policy.Because your tankless water system is integrated with your house, insurers will cover it as part of your dwelling policy.If your water heater fails as a result of neglect or age, or as a result of any other non-covered risk, you will be responsible for the expenditures incurred as a result.In addition, insurers will only cover water heaters for the duration of their expected life span of 10 years.

The tankless water heater has been damaged.If your tankless water heater is damaged by a covered danger, you may be able to file a claim for repairs or replacement under your dwelling coverage.Your insurance will handle your claim based on the replacement cost value, which means you will get enough money to purchase and install a replacement (minus your deductible).Endorsement for Mechanical Breakdown of Equipment While your normal insurance does not include coverage for mechanical failures, you may add an equipment mechanical breakdown endorsement to your policy to provide such coverage.When your condensing or non-condensing tankless water heater breaks down, it will cost you $2-6 each month and will cover the cost of repairs and new parts.

  1. Endorsements are normally free of deductibles and pay at the replacement cost of the item they cover (no depreciation).
  2. In the event of a tankless water heater causing damage to other property, If your tankless water heater causes damage to other items in your house, your insurance coverage will be determined by the manner in which the water heater became defective.
  3. For example, if it was old, neglected, or broke as a result of a mechanical failure and leaked water, gas, or ignited a fire, you would not be covered under your policy.
  4. Your personal property coverage, on the other hand, kicks in if a covered risk first causes damage to the tankless water heater, and then the water heater causes damage to other objects.
  5. If, on the other hand, it causes damage to a portion of your home, such as the floor, your homeowners insurance kicks in.
  6. Personal property is valued at its actual cost value (ACV), which is the current cost of repairing or replacing something, less depreciation, as opposed to its market worth.

In addition, your insurance company deducts your deductible.Keep in mind that some types of commodities, such as bicycles, are subject to a sub-limit of $1,500 – $2,500.As a result, if you have four bicycles for $5,000, your maximum payment will be equal to whatever the sub-limit for bicycles is.For complete coverage, you can purchase floaters or endorsements.

  • Is your water heater covered by your homeowners insurance?
  • Every state in the United States recognizes Young Alfred as a full-service insurance firm with a fully certified staff in every state.
  • With our partnerships with over 40 insurance providers, we are able to give you with a free analysis of your existing policy, which we will then compare to our insurer’s products in order to determine if you are getting the greatest coverage at the lowest possible price.
  • I hope this has been of assistance!
  • Online Home Insurance Estimates Are Available For Free Young Alfred, I am at your disposal.

Tankless Types: Breakin’ It Down

We understand that deciding which Tankless Water Heater is appropriate for your needs can be a difficult decision.There are a plethora of alternatives available, including several brands, many models, various venting configurations, and various powering systems.There’s a lot to learn and discover.

We’ve compiled a list of the fundamentals to help you comprehend the differences!Tankless water heaters that condensate vs.non-condensing water heaters: Tankless water heater using condensing technology: A Condensing Tankless Water Heater takes heat from exhaust gases and generates gases with a temperature of around 100 degrees Fahrenheit.Condensation forms inside the water heater as a result of the cooling of the gases.

As the gas cools, the efficiency of the water heater improves because you may use less expensive ventilation materials to increase the efficiency of the water heater.By catching the exhaust, you may use the leftover heat to heat the water in the unit, increasing the efficiency of the system overall.It is possible that the heater will not condense all of the time; the temperature and humidity of the surrounding air might have an impact on condensation.Because the exhaust gases have cooled inside the unit, condensation has formed inside the water heater, necessitating the use of heat exchanger materials that are resistant to the corrosive character of the exhaust gases.Stainless steel is usually used in the construction of these items.

  1. Rinnai Tankless Water Heaters are a condensing water heater series.
  2. Tankless water heaters are Energy Star certified and have an efficiency rating ranging from 90 percent to 96 percent.
  3. Tankless water heater that does not condense: Non-Condensing Tankless Water Heaters work in a similar way to the condensing version in that they expel exhaust gases through a vent to the outdoors.
  4. These gases condense outside of the water heater, allowing it to cool.
  5. Because the gases being forced through the vent can reach temperatures of up to 300 degrees, the vent is constructed of materials that will not corrode under such high temperatures.
  6. Natural/propane gas tankless water heaters vs.

electric tankless water heaters: Gas tankless water heaters are more energy efficient.Tankless water heaters are the most popular form of water heater.They do include some electrical components to operate the PC Board and control panel, but all they require is a standard wall outlet to get everything up and running.If you have a recirculation pump installed in your gas tankless water heater, you will save money on energy expenditures in addition to reducing water waste in your home.

  • The expense of ongoing operations is, without a doubt, a crucial issue.
  • When you add in the suggested yearly maintenance that gas appliances require, it is safe to say that gas and electric Tankless Water Heaters will function at around the same cost as each other in most cases.
  • Your ability to do so will be heavily influenced by the price disparity between natural gas or propane and electricity in your location.
  • Gas prices are exceptionally expensive in many areas of the world due to a scarcity of supply in the region.
  • In these situations, an electric unit can be substantially less expensive to operate than a gas one.
  • Remember that electric Tankless Water Heaters are more energy efficient than gas tankless water heaters, hence a large portion of the cost differential between the two fuels will be mitigated.

How To Size A Tankless Water Heater

If you are in the market for a new water heater, tankless hot water heaters may be an option to investigate. This type of hot water heater may provide you with a number of various advantages. In addition, you will need to understand how to properly size a tankless water heater.

What Is A Tankless Hot Water Heater?

It is a type of water heater that does not contain a storage tank, as opposed to standard water heaters.As soon as you turn on your faucet, cold water is instantly turned to hot water, and vice versa.You will save money on your utility costs because, unlike standard water heaters, you will not be required to heat the water on a continuous basis.

Tankless water heaters are also more space-efficient than typical water heaters, taking up significantly less space.

Sizing Your Water Heater

You will need to determine the appropriate size of your water heater.If you choose the incorrect size, it may not be able to adequately heat the water in your house.Particularly problematic is the situation in which you are attempting to utilize various restrooms or appliances at the same time.

It is possible to determine How To Size A Tankless Water Heater by following the methods outlined below: Step 1: Take some time to sit down and figure out how many devices you’ll need to have hot water for, as well as the flow rate for each.The flow rate is the number of gallons per minute of water flow that you will require.If you want to run your shower and faucet at the same time, you’ll need to figure out how much water each of them can handle.When it comes to hot water faucets, a flow rate of around 0.75 gallons per minute is recommended.

The flow rate of the shower head will be 2.6 gallons per minute.Your hot water heater should be able to deliver at least 3.26 gallons of hot water per minute, whichever is higher.Low-flow water faucets and shower heads are available for purchase and installation if you wish to reduce your flow rates.2.Determine the temperature rise that will be required for your equipment in step two of this procedure.

  1. You will need to subtract the temperature of the incoming water from the temperature of the output water.
  2. If you do not know the exact temperature of your entering water, you should always presume that it is 50°F or above.
  3. This will assist to guarantee that you do not choose a tankless hot water heater that is too small.
  4. It is crucial to understand that if you reside in a hotter climate, the temperature of your entering water will be greater.
  5. You will want to choose a temperature range of 105 to 115 degrees.
  6. If this is the case, you will need to ensure that the tankless water heater has the ability to offer a temperature rise of 55 degrees or greater.

Sizing Example

You will need to have a shower temperature of between 104 and 106 degrees to get the most out of it.When you take a shower, it will use 2.6 gallons of water every minute.A minimum of a 60-degree increase in temperature is required, and your tankless hot water heater should be capable of producing 5.2 gallons per minute in order to guarantee that you have the appropriate water temperature.

You will need to pay close attention to this since sizing your system incorrectly can result in you not having enough hot water to complete the tasks that you need to do.Determine the flow rates that you will require from your hot water heater in order to guarantee that you can complete the tasks that you have set for yourself.Suppose you want to take two showers at the same time, or you want to run many sinks at the same time.In order to meet your bathroom water requirements, it is advised that you utilize 1.0 GPM.

The water from your tankless water heater will be insufficient if you are running two different showers at the same time.Water consumption will be around 4.5 gallons per minute if you need to operate both your washing machine and shower at the same time.You’ll want to be certain that the heater you choose is the appropriate size.Calculating your water use rates can assist you in selecting the most appropriate tankless water heater for your needs.If you want a higher temperature rise per GPM of water, you may want to look into buying a gas tankless hot water system here.

  1. These gas hot water heaters have the ability to swiftly raise the temperature of the water.
  2. For more information on How To Size A Tankless Water Heater, contact the Original Plumber right away.
  3. They will be able to tell you what size water heater you require and will show you the many alternatives that are available.
  4. They may sit down with you and go through your use rates to evaluate if it would be more cost effective for you to purchase an electric tankless hot water heater or a gas tankless hot water heater.
  5. Hiring a professional plumbing firm eliminates the need to worry about the installation of the hot water heater or ensuring that you have the proper size.
  6. The installation of a water heater may be complex and risky, therefore it is always a good idea to leave it to the experts.

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