After 110+ hours of research & testing, we’re comfortable recommending the Rinnai V65IN as the best overall tankless gas water. It was rated as one of our highest quality units while being significantly cheaper than the others (by up to $1,000). With that said, if you’re looking for the highest quality unit available (period), we recommend the Bosch Greentherm C 1050 ES NG for its high energy factor & long-term durability. We maintain these recommendations even after accounting for newer models of other brands that have been released in the first half of 2019. Read further for our findings.

 

Takagi T-Kjr2-IN-NG Indoor Tankless Water Heater (Natural Gas)

Takagi T-Kjr2-IN-NG Indoor Tankless Water Heater (Natural Gas)

Takagi T-Kjr2-IN-NG Indoor Tankless Water Heater (Natural Gas)

6/10
  • Inlet and outlet temperature monitoring
  • 10-year and 5-year warranty for heat exchanger and other parts, respectively
  • Minimum activation at .5 GPM and 15 PSI
  • Some heating inconsistency at low flow rate
  • Warranties are only valid if unit is installed by a properly licensed technician
Dimensions:
6.7 x 13.8 x 20.3 inches
Flow Rate & Water Pressure:
6.6 GPM
Heating Capacity & Maximum Temperature:
140,000 BTUs, 167º F
Color:
White
Certifications:
Energy Star
Warranty:
: 10-year for heat exchanger, 5-year for other parts

Our Review

The Takagi T-KJR2 is another common offering you’ll often see on hardware store shelves. This ready availability is well-justified given that this model provides a productive 6.6 GP flow rate. This is further supplemented by a 140,000 BTU heating capacity that can warm groundwater up to 167º F in no time flat.

This model does come with some noteworthy drawbacks, however. Though it can activate with as low as.5 GPM and minimum water pressure at 15 PSI, this base functionality leads to heating inconsistencies overall. Prospective buyers should also be aware that its warranty is only valid if the water heater is installed by a certified technician.

Eccotemp FVI-12 Natural Gas High Capacity Tankless Water Heater

Eccotemp FVI-12 Natural Gas High Capacity Tankless Water Heater

Eccotemp FVI-12 Natural Gas High Capacity Tankless Water Heater

6/10
  • Efficient ventilation when installed indoors
  • Easy-to-read digital display
  • Operates fairly quietly
  • Includes parts and instructions needed for DIY installation
  • Requires manual adjustment
  • Does not list heating capacity
Dimensions:
4 x 15 x 24 inches
Flow Rate & Water Pressure:
3.5 GPM
Heating Capacity & Maximum Temperature:
N/A
Color:
White
Certifications:
UL
Warranty:
2-year limited manufacturer warranty

Our Review

Another entry-level offering from Eccotemp, the FVI-12 provides its users an ideal indoor water heating solution that is both safe and efficient. Both of these properties are bolstered by this model’s unique ventilation system that prevents overheating without producing an excessive amount of noise.

User-friendliness is also packed into the Eccotemp FVI-12 from start to finish. DIYers will be pleased to see that this model comes with nearly everything you’ll need for installation, from terminating pipes to a succinct instruction manual. Even while in operation, this model will be easy to engage with thanks to its crisp, clear digital display.

Eccotemp i12-NG Tankless Water Heater

Eccotemp i12-NG Tankless Water Heater

Eccotemp i12-NG Tankless Water Heater

8/10
  • Sleek, modern black tempered glass exterior complimented by user-friendly LED display
  • Automatic temperature control reduces energy consumption
  • Lacks an active pilot light in favor of safe electric ignition system
  • Can be used at up to 5500 ft. in elevation
  • Does not handle freezing temperatures well
  • Cannot recirculate the supply of hot water
Dimensions:
16 x 16 x 11 inches
Flow Rate & Water Pressure:
3 GPM
Heating Capacity & Maximum Temperature:
80,000 BTU, N/A
Color:
Black
Certifications:
UL
Warranty:
2-year limited manufacturer warranty

Our Review

As one of the most affordably priced tankless natural gas water heaters available on the market today, the Eccotemp i12-NG stands as a model that would usually be highlighted by its price tag alone. But in fact, this model has more to offer, including an 80,000 BTUS heating capacity supplemented by 3 GPM flow rate. With a sleek, modern black tempered glass exterior and user-friendly LED display, this model is a sight for sore eyes as well.

Internally, the Eccotemp i12-NG also provides some key functionality that keeps it both efficient and safe. For example, this model operates without a pilot light, choosing instead to incorporate an electric ignition system that is both safer and more energy efficient. This energy efficiency carries on through its automatic temperature controls which takes the guesswork out of finding the most comfortable and cost-effective maximum temperature.

Camplux Indoor Tankless Natural Gas Water Heater

Camplux Indoor Tankless Natural Gas Water Heater

Camplux Indoor Tankless Natural Gas Water Heater

8/10
  • Glassy black front panel is equipped with LED touchscreen controls
  • Innovative combustion technology ideal for outdoor use
  • Low start-up water flow at only 0.8 GPM
  • Child lock prevent accidental interactions
  • Cannot be used over 2000 ft. elevation
  • Difficult to interpret error code system
Dimensions:
14.4 x 4.7 x 25.4 inches2.64
Flow Rate & Water Pressure:
3.18 GPM, 3.6-145 PSI
Heating Capacity & Maximum Temperature:
82,000 BTU/hour
Color:
White
Certifications:
CSA
Warranty:
N/A

Our Review

While its lack of warranty is a bit suspicious, this Camplux tankless natural gas water heater still stands out as one of the best for outdoor installation or implementation in compact living spaces. This is partially influenced by its glassy black front panel that provides user-friendly touchscreen controls through an LED display. This model’s child lock shouldn’t be overlooked either as it can prevent accidental interactions from inquisitive hands.

Even on the inside, this Camplux water heater manages to pack a worthwhile punch. With a fairly low activation water flow at 0.8 GPM, this model can eventually whirl up to 3.18 GPM for nearly 145 PSI of water pressure. Moreover, this model’s innovative combustion technology allows it to efficiently convert natural gas even in adverse outdoor conditions.

Why We Picked It – As its name implies, this Camplux model derives from technology implemented into specialized camping water heaters in order to provide an excellent flow rate and heating capability for its compact size. While its glossy black exterior is easy to look at, it is also easy to interact with thanks to its innovative LED touchscreen controls. Whether you intend to install a tankless water heater outside your home or inside an interior closet, this compact model is your best bet.

Takagi T-K4-IN-NG Indoor Tankless Water Heater (Natural Gas)

Takagi T-K4-IN-NG Indoor Tankless Water Heater (Natural Gas)

Takagi T-K4-IN-NG Indoor Tankless Water Heater (Natural Gas)

7/10
  • Direct venting system to ensure proper ventilation
  • Simple exhaust and water temperature controls
  • Can be used at up to 6,000 ft. elevation due to built-in freeze protections
  • Lower-than-average energy factor at 82%
  • Slow to heat water
Dimensions:
8.5 x 13.8 x 20.5 inches
Flow Rate & Water Pressure:
8 GPM, 150 PSI
Heating Capacity & Maximum Temperature:
190,000 BTU, 165º F
Color:
White
Certifications:
Energy Star
Warranty:
12 years on heat exchanger, 5 years on parts, 1 year on labor|

Our Review

Finally, the Takagi T-K4 is a solid choice that homeowners living at moderately high elevations can count on. With an operation certification for up to 6,000 ft. in elevation, this model is able to maintain an 8 GPM flow rate and 165º F maximum temperature even in the thin, mountainous air.

You’ll be able to count on the Takagi T-K4, luckily, because it comes with a multi-tiered warranty that covers the heat exchanger for 12 year, the labor for 1 year, and all of the other parts for 5 years. That can really translate into some operational savings, especially to counteract its lower-than-average energy factor at 82%.

Rheem RTGH-95DVLN Indoor Direct Vent Tankless Water Heater (Natural Gas)

Rheem RTGH-95DVLN Indoor Direct Vent Tankless Water Heater (Natural Gas)

Rheem RTGH-95DVLN Indoor Direct Vent Tankless Water Heater (Natural Gas)

9/10
  • 94% energy efficiency with durable stainless-steel condensing heat exchanger
  • Intelligent electronic controls help monitor efficiency and perform self-diagnostics
  • Built-in freeze protection for use at up to 9,840 ft. elevation
  • Low NOx output
  • Indoor installation only
  • Produces excessive sound
Dimensions:
18.5 x 9.8 x 27.5 inches
Flow Rate & Water Pressure:
9.5 GPM
Heating Capacity & Maximum Temperature:
199,990 BTUs, 120º F
Color:
Silver
Certifications:
Energy Star
Warranty:
12 years on heat exchanger, 5 years on parts, 1 year on labor

Our Review

For an indoor-only tankless natural gas water heater, the Rheem RTGH-95DVLN is surprisingly energy efficient at 94%. This is fully the result of its durable stainless-steel condensing heat exchanger which can pump out a 9.5 GPM flow rate and a 120º F maximum temperature.

Much of this model’s efficiency can be evaluated through its built-in intelligent electronics controls. These controls are also able to perform diagnostic checks to ensure long-term safe and sustainable usage. Folks living at high altitudes should also put the Rheem RTGH-95DVLN high on their list because it is certified to function efficiently at up to 9,840 ft.

Rinnai RUC98iN Ultra Series Twin Pipe Tankless Water Heater (Natural Gas)

Rinnai RUC98iN Ultra Series Twin Pipe Tankless Water Heater (Natural Gas)

Rinnai RUC98iN Ultra Series Twin Pipe Tankless Water Heater (Natural Gas)

8/10
  • Among the highest energy efficiency at 96%
  • 140º F max. temperature ideal for personal and house-wide cleaning
  • Direct vent system that works with concentric and PVC
  • Includes multiple safety devices to prevent flame failure
  • Inefficient customer service
  • Lower-than-average minimum PSI at 50
Dimensions:
10 x 18.5 x 26 inches
Flow Rate & Water Pressure:
9.8 GPM, 150 PSI
eating Capacity & Maximum Temperature:
199,000 BTUs, 140º F
Color:
Silver
Certifications:
Energy Star
Warranty:
12 years on heat exchanger, 5 years on parts, 1 year on labor

Our Review

The Rinnai RUC98iN is part of its manufacturer’s “Ultra Series,” a superlative that is well evidenced in its whopping 96% energy efficiency. Even with such a high efficiency rating, this model manages to routinely turn out a 9.8 GPM flow rate with a 199,000 BTU heating capacity. Additionally, this model is capable of reaching temperatures up to 140º F at nearly 150 PSI of water pressure.

The Rinnai RUC98iN includes some special bonus features that are worth examining as well. This includes a direct vent system that is compatible with both concentric and PVC pipes. Also, this model keeps itself safe through its multiple safety devices that prevent flame failure.

Rinnai V65IN Indoor Tankless Water Heater (Natural Gas)

Rinnai V65IN Indoor Tankless Water Heater (Natural Gas)

Rinnai V65IN Indoor Tankless Water Heater (Natural Gas)

8/10
  • 6.5 GPM flow rate even with cold water input
  • Uses proprietary mobile app for scheduling and timers
  • EnergyStar certification for efficient conversion up to 150,000 BTU
  • Enhanced scale detection lessens possibility of long-term damage
  • Requires certified installation
  • Makes a little more noise than usual
Dimensions:
13.9 x 8.8 x 23.6 inches
Flow Rate & Water Pressure:
6.6 GPM
Heating Capacity & Maximum Temperature:
10,300 – 150,000 BTUs
Color:
White
Certifications:
Energy Star
Warranty:
2 years on heat exchanger, 1 year on labor, 5 years on all other parts

Our Review

Rinnai has long made a name for itself in the tankless water heater industry and with their V65IN, they’ve pulled off another masterstroke. This model is able to maintain a 6.5 GPM hot water flow rate from nearly any temperature groundwater. One current user found that the Rinnai V65IN could handle cold Alaska groundwater without any decrease in overall efficiency.

Controlling and maintaining the Rinnai V65IN is also a great experience thanks to its technological integration. This can primarily be seen in its use of a proprietary smartphone app that can be used to set timers and schedules for hyper-efficient hot water usage. This app can additionally be used to evaluate this water heater’s interior health, such as through its enhanced scale detection mechanism.

Eccotemp 45H-NG Outdoor Natural Gas Tankless Water Heater

Eccotemp 45H-NG Outdoor Natural Gas Tankless Water Heater

Eccotemp 45H-NG Outdoor Natural Gas Tankless Water Heater

7/10
  • CSA certified for safe and easy installation
  • No venting required, making it ideal for outdoor installation
  • High peak flow rate at 6.8 GPM
  • Can be easily adjusted using Digital Remote control
  • Some internal leakage
  • Poor tech support when attempting to invoke warranty
Dimensions:
15 x 7.5 x 28 inches
Flow Rate & Water Pressure:
6.8 GPM
Heating Capacity & Maximum Temperature:
26,000 – 140,000 BTUs
Color:
White
Certifications:
UL, CSA
Warranty:
5-year limited manufacturer warranty

Our Review

The Eccotemp 45H-NG is another great outdoor tankless natural gas water heater option for those looking for a high flow rate and heating capacity – at 6.8 GPM and 140,000 BTU, respectively. Even for this increased capability, this model is particularly efficient because it does not require extra ventilation to be installed. This is great for large homes.

Interacting with the Eccotemp 45H-NG is unique when compared to other competing outdoor tankless water heaters. That is because this model makes full use of a Digital Remote system that allows a user to adjust its output and temperature without ever stepping foot outdoors. Installing this model isn’t a huge hassle, either, as its CSA certification clearly shows. That certification also demonstrates the Eccotemp 45H-NG’s overall safety, as shown in its built-in pressure relief valve and gas shut-off valve.

Excel Pro Tankless Water Heater (Natural Gas)

Excel Pro Tankless Water Heater (Natural Gas)

Excel Pro Tankless Water Heater (Natural Gas)

8/10
  • Able to reach 6.6 GPM flow rate with 150 PSI water pressure
  • Able to modulate heat output automatically based on flow rate
  • Includes venting options for rooftop and wall mounting
  • Pure copper heat exchanger is particularly efficient and durable
  • Display reads in Celsius by default
  • No warranty listed
Dimensions:
14.5 x 5.5 x 23 inches
Flow Rate & Water Pressure:
6.6 GPM, 150 PSI
Heating Capacity & Maximum Temperature:
140,000 BTUs
Color:
White
Certifications:
SGS
Warranty:
N/A

Our Review

The Excel Pro Tankless Gas Water Heater is certainly not a new face on the block. But even so, it continues to provide a reliable standard of production through its combination of a 6.6 GPM flow rate and a peak heating capacity 140,000 BTU. This model takes special advantage of its core capabilities through a specialized heat modulation process that adjusts heat production to respond to changes in the flow rate.

This model’s heating capabilities is primarily facilitated by a pure copper heat exchanger, which is particularly durable and is able to produce an 84%+ heating efficiency when in use. Though its digital display only reads in Celsius, knowledgeable mobile homeowners can install this tankless heater and know that it has been tested to prevent accidental property damage.

Bosch C 1050 ES Tankless Water Heater (Natural Gas)

Bosch C 1050 ES Tankless Water Heater (Natural Gas)

Bosch C 1050 ES Tankless Water Heater (Natural Gas)

9/10
  • Able to provide 10.5 GPM for bathrooms at once
  • EnergyStar certification through concentric up-and-out venting
  • Very low NOx emissions
  • Exceptional 15 year warranty on heat exchanger, 5 years on other parts
  • Very expensive, at up to 4x the price of competitors
  • Not certified to work at higher elevation
Dimensions:
11.2 x 17.9 x 30.5 inches
Flow Rate & Water Pressure:
10.5 GPM
Heating Capacity & Maximum Temperature:
199,000 BTUs
Color:
Grey
Certifications:
Energy Star
Warranty:
15 years for heat exchanger, 5 years on other parts

Our Review

Well known for other types of electronics and power tools, the Bosch Greentherm C 1050 stands out as among the best and most powerful tankless water heaters available today. This can clearly be seen in its remarkable 10.5 GPM flow rate and 199,000 BTU heating capacity – both of which place this model in the top percentile.

While this model’s EnergyStar certification speaks to its efficient use of its natural gas source, it also qualifies its overall low NOx emission rating. In the end, you’ll pay for all of the added value in the Bosch Greentherm C 1050 at up to 4x the price of competing models. But such a high price tag can be justified after considering how long this model will last through its 15-year heat exchanger warranty and 5-years general parts warranty.

American Standard TCWH180S-AS-NG Tankless Natural Gas Water Heater

American Standard TCWH180S-AS-NG Tankless Natural Gas Water Heater

American Standard TCWH180S-AS-NG Tankless Natural Gas Water Heater

9/10
  • 96% thermal efficiency for great energy savings
  • Strong 12-year and 5-year warranty on heat exchanger and other parts respectively
  • EnergyStar certificate for using up to 55% less energy than minimum federal standards
  • Comes standard with a high temperatures exhaust sensor, flame sensor, gas leak detection sensor, and water temperatures sensors
  • Only certified for indoor use
Dimensions:
15.2 x 17.4 x 31.1 inches
Flow Rate & Water Pressure:
11 GPM
Heating Capacity & Maximum Temperature:
199,000 BTUs
Color:
White
Certifications:
EnergyStar, ETL
Warranty:
12 years on heat exchanger, 5 years on limited parts

Our Review

Few other tankless natural gas water heaters have managed to reach the summit established by the American Standard TCWH180S-AS-NG. This remarkable model provides a superior degree of thermal efficiency at nearly 96%, earning it an EnergyStar certification. This high efficiency is powered by a variety of components, including the built-in precision thermostat that can output temperatures between 95°F and 140°F.

In addition to its core capabilities, the American Standard TCWH180S-AS-NG comes standard with a high temperatures exhaust sensor, a flame sensor, a gas leak detection sensor, and water temperatures sensors. Taken together, this model is uniquely able to care for itself and alert its users to impending danger and maintenance needs.

A 3 bathroom home needs not only a great flow rate and heating capacity but also the overall efficiency to prevent your water and electricity bills from skyrocketing. This model manages to package all of those qualities into a single excellent tankless water heater by combining a 11 GPM flow rate with a 199,000 BTU heating capacity to provide water temperatures comfortably between 95°F and 140°F. This model’s EnergyStar certification is well-earned as well because it uses 55% less energy than minimum federal standards, meaning you’ll help the environment and save money.

Don’t see what you’re looking for, or still have questions left unanswered?

Finding a Tankless Water Heater That Works for You

After a long day of fun in the sun or a chilly afternoon of romping through the snow, few experiences can beat the embrace of a hot shower or bath. If you only have a few minutes to bask in the toasty waters, you probably haven’t taken the time to appreciate the hard work your at-home water heater routinely accomplishes. But what if you could draw even more efficiency and quality out of your home’s water heating system?

The secret to even more hot water heated at rapid speeds is simple. To get this and more, you need to add a tankless natural gas water heater like the Rinnai RUC98iN to your home. By taking advantage of the space-saving construction associated with the best tankless water heaters, these modern appliances are able to operate efficiently using an in-line natural gas source. The end result is a reliable hot water source supplied to your faucets and taps in mere seconds.

If you’ve decided to purchase a tankless natural gas water heater for your home or are just interested in learning about what these high-performing appliances have to offer, then you’ve come to the right place. This article features reviews of the top 12 best tankless natural gas water heaters available this year, as well as a Buyer’s Guide detailing the specifications you should seek out in a top-of-the-line water heater. You should also decide whether you need a whole-house model or a point-of-use model.

Do You Need a Tankless Natural Gas Water Heater?

Generally speaking, most folks treat their water heater as the would their general electric and water supply. That is, if they are operating as expected, then there are few reasons to complain or consider an alternative. But when it comes to heating water for your home’s cooking, cleaning, and bathing needs, there’s a great deal of potential lost in homes that don’t make use of a tankless natural gas water heater.

That being said, a tankless natural gas water heater is not an absolute must-have for homeowners who are looking to extract every ounce of efficiency from their home. But still, tankless natural gas water heaters are a thoroughly modern water preparation solution that can allow certain homeowners to both improve their quality of living while simultaneously lowering their long-term energy bills.

Indeed, this latter factor is perhaps the most persuasive for the majority of homeowners. Nearly every tankless natural gas water heater holds the potential to lower its owner’s electricity and water bill within the first month of use. Because of their tankless architecture, these appliances do not store water in a large auxiliary drum. This lack of a storage container means that these water heaters only consume as much water as its owners directly use, making it easier to budget your home’s water usage.

By the same virtue, tankless natural gas water heaters are also cheaper when it comes to heating water as it passes through its purpose-built system. Using a series of internal heating coils, tankless natural gas water heaters convert energy provided by a natural gas source into a rapid heating procedure. Due to this efficient heating method and the overall low cost of natural gas, these specialized water heaters are the clear choice for homeowners on a budget.

That being said, the best way to take full advantage of the savings a tankless natural gas water heater can provide is by using one from day one. Because retrofitting costs associated with the installation of one of these appliances can be pricy, their use is best suited to folks with large upgrade budgets or folks building a new home from scratch. In either case, these slightly pricy water heaters pay for themselves in mere months thanks to their utility cost reductions.

Out of all homeowners, those living in small or otherwise compact living spaces will most benefit from the streamlined architecture of most tankless natural gas water heaters. Their lack of a water storage container makes these appliances comparatively streamlined. This, in turn, provides homeowners with more versatility in the installation location, with everything from interior closets to exterior walls in reasonable consideration.

Though some consider it to be a drawback, the low water heating capacity of most tankless natural gas water heaters actually serves the needs of homeowners with low simultaneous hot water demands with precision. With a 3.5 gallon average capacity, these smaller-than-average water heaters can easily provide enough water to wash dishes or run a warm bath. Also, the low capacity from these water heaters can easily be circumvented by installing multiple units at high demand locations, such as in a bathroom or in the kitchen.

Finally, a tankless natural gas water heater is the clear choice for homeowners with an existing natural gas line within their home. In certain parts of the country, natural gas is abundant and affordable, allowing previously expensive procedures such as heating water to become relatively cheap. These appliances are able to efficiently convert natural gas into energy for heating, making them a no-brainer compared to traditional electric water heaters.

Buyer’s Guide

Whether you’re building a new home or looking to upgrade, choosing the right water heater system can be challenging. In order to find the best option to meet your needs and budget, you’ll need industry-specific knowledge of key specifications and features. You’ll find exactly that in this Buyer’s Guide, allowing you to parse through both online and in-store product listings with ease going forward.

Before you read our reviews of this year’s top 12 tankless natural gas water heaters below, be sure to read through this Buyer’s Guide so that you can understand all of the market terminologies that describes what makes those options the very best on the market today.

Dimensions

When it comes to purchasing a new water heater, size really does matter. Traditional water heaters are bulky due to their inclusion of a massive water storage drum. Tankless water heaters, on the other hand, forgo this auxiliary tank, allowing them to take on a much more compact form factor. As a result, many tankless water heaters can be placed in closets and on exterior walls without hogging up valuable space.

When choosing a water heater based upon its dimensions, always be sure to measure your intended installation location before completing your purchase. In particular, make sure that there will be plenty of clearance around the prospective water heater so that fuel lines can be inserted easily and maintained without major special modification.

Flow Rate and Water Pressure (PSI)

Flow rate (sometimes referred to as water capacity) describes how much water a given water heater is able to warm and output in a given period of time. Because tankless water heaters lack a reserve chamber, they are usually only able to provide a flow rate of around 3.5 gallons per minute (GPM). A higher flow rate or supplementary tankless water heaters will be necessary for homes with high simultaneous hot water needs.

If you’ve ever used a shower or sink with “weak” flow, then you’ve directly experienced the effects of low water pressure. Though most modern water heaters output water at around 60 pounds per square inch (PSI), some are able to output are higher rates to meet unique architectural needs. In any case, having an optimal water pressure rate is essential to the full enjoyment of fixtures attached to your new water heater.

Heating Capacity (BTU) and Maximum Temperature

Being able to efficiently heat water to the desired temperature is an essential function for a water heater, one that prospective buyers should focus on while comparing product listings. Heating capacity is generally measured in British thermal units or BTU in order to demonstrate how much energy that particular model uses to heat a gallon of water. A higher BTU rating leads to more rapid heating and temperature rise.

Some water heaters also include a maximum temperature in their listing to communicate its overall heating capacity. Prospective buyers should use this metric to evaluate whether or not a given model is appropriate for use with cleaning, washing machines, dryers, bathing, etc.

Fuel Type

Water heaters can be powered by a variety of fuel sources today, including electricity, propane, and natural gas. Each fuel source provides different levels of efficiency and cost, depending on the localized cost and infrastructure used in your area. You should certainly choose a water heater that is powered by the most efficient and cost-effective fuel source in your area.

Warranty

Though few ever consider it when making a purchase, your at-home water heater is bound to break down eventually. That’s when a quality warranty comes into play, providing you with financial incentives to seek out repairs and continue using that particular water heater. When comparing listings, be sure to prioritize models that include a warranty that is comparable to its overall expected lifespan.

Certifications

Many water heater manufacturers like to brag about what types of certifications their latest models have received. These certifications run the gambit from safety qualifications to marks of energy efficiency, such as the EnergyStar certification awarded by the US Environmental Protection Agency. Remember that all certifications are not equal though, so you should only prioritize those awarded by reputable industry-specific organizations.

Quick Tips

If you’re in a hurry to find a new tankless natural gas water heater, keep these quick tips in mind as you analyze the top-of-the-line models listed below. For more details and specification descriptions, be sure to read our “Buyer’s Guide.”

  • Evaluate the Installation Space – Measure your prospective installation sight so that you can select a water heater that can be operated and maintained within the desired space
  • Determine your Fuel Source – If you intend on purchasing a tankless natural gas water heater, be sure that you are able to pipe natural gas from your mainline to the installation location
  • Compare Heating Capacity and Water Pressure – Select a model that provides enough water at the proper temperature to meet your family’s simultaneous needs
  • File the Warranty after Purchase – If a warranty is available, immediately file the appropriate paperwork to activate said policy

Don’t see what you’re looking for, or still have questions left unanswered?

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