20 Best Tankless Gas Hot Water Heater [2022]

Are you looking for the best tankless gas hot water heater ? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling tankless gas hot water heater .

We Recommended:

# Preview Product
1 Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170000 BTU White Instant Hot Water Heater Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170000 BTU White Instant Hot Water Heater
2 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating... EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating...
3 Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation
4 MAREY GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater, Liquid, White MAREY GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater, Liquid, White
5 Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
6 Tankless Water Heater Natural Gas, Camplux Instant Hot Water Heater, 3.18 GPM Natural Gas Tankless... Tankless Water Heater Natural Gas, Camplux Instant Hot Water Heater, 3.18 GPM Natural Gas...
7 Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater
8 Rheem 18kW 240V Tankless Electric Water Heater Rheem 18kW 240V Tankless Electric Water Heater
9 Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation
10 ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating... ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating...
11 Rinnai RUCS75iN Natural Gas Tankless Hot Water Heater, 7.5 GPM Rinnai RUCS75iN Natural Gas Tankless Hot Water Heater, 7.5 GPM
12 RHEEM RTGH-84DVLN-2 Natural Gas Condensing Tankless Water Heater, Silver , Gray RHEEM RTGH-84DVLN-2 Natural Gas Condensing Tankless Water Heater, Silver , Gray
13 RecPro RV Tankless Water Heater | On Demand Hot Water Heater | Gas Water Heater | Remote Control... RecPro RV Tankless Water Heater | On Demand Hot Water Heater | Gas Water Heater | Remote Control...
14 Rinnai RU130iN Natural Gas Condensing Tankless Hot Water Heater, 7 GPM Rinnai RU130iN Natural Gas Condensing Tankless Hot Water Heater, 7 GPM
15 Excel Tankless On-Demand Gas Water Heater VENTFREE – Propane (LPG) - Low Water Pressure Startup Excel Tankless On-Demand Gas Water Heater VENTFREE – Propane (LPG) - Low Water Pressure Startup
16 Camplux Propane On Demand Instant Hot Water Heaters Gas Tankless Water Heater Indoor, 6.86 GPM, 120v... Camplux Propane On Demand Instant Hot Water Heaters Gas Tankless Water Heater Indoor, 6.86 GPM,...
17 EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self... EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self...
18 Rinnai RL75iN Natural Gas Tankless Hot Water Heater, 7.5 GPM Rinnai RL75iN Natural Gas Tankless Hot Water Heater, 7.5 GPM
19 Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural Gas Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural Gas
20 RV Tankless Water Heater, FOGATTI 2.2 GPM, 42000 BTU Hot Water Heater with 15 x 15 Inches White... RV Tankless Water Heater, FOGATTI 2.2 GPM, 42000 BTU Hot Water Heater with 15 x 15 Inches White...
SaleBestseller No. 1
Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170000 BTU White Instant Hot Water Heater
  • We recommend that all installations of units must be done in accordance with the local building and plumbing codes of the installation location and...
  • The tankless design means you don't have to wait 30 minutes for preheating and unlimited use of hot water.
  • 170,000 BTU high heating capacity and maximum 7.5 GPM. It is suitable for 3-4 outlet points, which can satisfy whole family. UEF over 0.82, the high...
  • Excellent quality CSA certified in the United States and Canada. Adopting the world's most advanced technology, superior safety and durability.
  • Using built in forced exhaust fan at the bottom ensures stable combustion and eliminates the influence of external wind. Compact design for easy...
Bestseller No. 3
Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: Up to 11 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Equipped with Circ-Logic - Pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
Bestseller No. 4
MAREY GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater, Liquid, White
  • This unit is flow activate
  • Save up to 60% on electricity bills for water heating
  • Compact design saves space and is easy to install almost anywhere
  • No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
  • Unlimited hot water whenever is needed
Bestseller No. 5
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
  • Bottom 3/4" NPT water connections
  • On demand, consistent and continuous hot water
Bestseller No. 6
Tankless Water Heater Natural Gas, Camplux Instant Hot Water Heater, 3.18 GPM Natural Gas Tankless...
  • 3.18 GPM Instant Constant Water Heater -Camplux 3.18 GPM tankless water heater natural gas delivers 3.18 gallons per minute of on-demand endless hot...
  • Convenient, Easy Installation -The tankless water heater uses standard 1/2" BSP water fitting and gas inlet. The water heater comes with1/2 " BSP...
  • Modern Design,Easy Operation -Trendy and modern design with unique black glassy front panel,easy to control the water temperature with LED...
  • Outstanding Features- The Camplux tankless hot water heater comes with oxgen-free copper heat exchanger and v-type stainless steel burner,high heating...
  • 6-In-1 Protection Ensure Your Safety- Dry combustion,flame failure device, anti-freezing protection, over heating protection to ensure your safety....
SaleBestseller No. 7
Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater
  • Exclusive Water Savings technology conserving up to 1, 100 gallons per year
  • 199, 900 BTU (gas consumed per hour)
  • Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
  • Recirculation pump ready kit ready
  • For use indoor only
Bestseller No. 8
Rheem 18kW 240V Tankless Electric Water Heater
  • External digital thermostatic control with LED display (+/1 degree accuracy)
  • Most advanced self-modulation, adjust power to meet hot water demand
  • Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
  • Simple installation – bottom 3/4 inch NPT water connections
  • Threaded for easy replacement, simple installation, digital temperature display
Bestseller No. 9
Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 6.5 GPM hot water flow rate for a powerful, constant stream
  • Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation
  • Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively
SaleBestseller No. 10
ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating...
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
  • The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
SaleBestseller No. 11
Rinnai RUCS75iN Natural Gas Tankless Hot Water Heater, 7.5 GPM
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: High-performance 7.5 GPM hot water flow rate for a powerful, constant stream
  • Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation
  • Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively
Bestseller No. 12
RHEEM RTGH-84DVLN-2 Natural Gas Condensing Tankless Water Heater, Silver , Gray
  • Condensing Technology for Greater Efficiency and Significant Energy Savings
  • Residential Temperature Settings: 98°F - 140°F
  • Manufactured in Mexico
Bestseller No. 13
RecPro RV Tankless Water Heater | On Demand Hot Water Heater | Gas Water Heater | Remote Control...
  • No more waiting for the water tank to warm up or running out of warm water halfway through your shower. With this amazing machine, you can have a...
  • There is a forced exhaust structure that keeps the air safe and clean while and after entering the combustion chamber. There is also a dust net to...
  • There is a low water pressure startup, which helps to protect the heater and make it easier to use.
Bestseller No. 14
Rinnai RU130iN Natural Gas Condensing Tankless Hot Water Heater, 7 GPM
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Optimal Water Pressure: Up to 7 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Equipped with Circ-Logic - Pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring
Bestseller No. 15
Excel Tankless On-Demand Gas Water Heater VENTFREE – Propane (LPG) - Low Water Pressure Startup
  • PROPANE LPG GAS UNIT
  • "Low Water Pressure" Startup Technology
  • Starts with only 2 PSI of Water Pressure - Amazon Exclusive
  • Exclusive - Vent-Free Technology No expensive Flue required Amazon Exclusive
  • Compact size: front 11.5” - depth 6” – height 16”
Bestseller No. 16
Camplux Propane On Demand Instant Hot Water Heaters Gas Tankless Water Heater Indoor, 6.86 GPM, 120v...
  • 6.86 GPM Instant Water Heater.Camplux 26 litre propane hot water heater is powered by 120V AC voltage, features imported PCB with precise temperature...
  • Convenient, Easy Installation. 6.86 GPM hot water is activated by water flow rather than water pressure,automatically activates on water pressure...
  • Direct-Current Frequency Conversion Fan.The propane tankless water heater comes with a direct-current frequency conversion fan. The instant hot water...
  • S/S Burner, Thermal Efficiency Up to 89.98%. The tankless hot water heater comes with CSA certified balanced combustion design, v-type stainless steel...
  • Considerate Anti-Scalding Protection.The propane gas water heater equipped with anti-scalding function to avoid the problem of excessively high...
SaleBestseller No. 17
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self...
  • Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow...
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use;...
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that...
  • EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal...
  • Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
Bestseller No. 18
Rinnai RL75iN Natural Gas Tankless Hot Water Heater, 7.5 GPM
  • Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in...
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a...
  • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger,...
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your...
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for...
SaleBestseller No. 19
Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural Gas
  • Endless hot water
  • Can be vented with Schedule 40 PVC Pipe and Fitting
  • High Efficiency
  • Low Nox
  • Remote thermostat & 6' power cord included
SaleBestseller No. 20
RV Tankless Water Heater, FOGATTI 2.2 GPM, 42000 BTU Hot Water Heater with 15 x 15 Inches White...
  • 【Unprecedented experience】The high altitude suitability mode allows the machine to run smoothly even when driving the caravan to the high Denver...
  • 【High compatibility and easy installation】The Fogatti RV water heater has a wide range of applications. It has a 13*13 inch opening and can...
  • 【Incessant hot water】With 42,000 BTU of power, it can produce a maximum of 2.2GPM of hot water. Some tank heaters can only store up to 6-10gallon...
  • 【No waiting】RV tankless water heaters are taking off. Tankless water heaters are better than tanked water heaters for continuous showering of...
  • 【Save money and trouble】Fogatti has always thought of you, with a pressure relief valve built into the product, so you don't have to buy and...

Having trouble finding a great tankless gas hot water heater ?

This problem is well understood by us because we have gone through the entire tankless gas hot water heater research process ourselves, which is why we have put together a comprehensive list of the best tankless gas hot water heater s available in the market today.

After hours of searching and using all the models on the market, we have found the best tankless gas hot water heater for 2022. See our ranking below!

How Do You Buy The Best Tankless Gas Hot Water Heater ?

Do you get stressed out thinking about shopping for a great tankless gas hot water heater ? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching tankless gas hot water heater , which is why we have assembled a comprehensive list of the greatest tankless gas hot water heater available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for tankless gas hot water heater that you consider buying. Your questions might include the following:

  • Is it worth buying an tankless gas hot water heater ?
  • What benefits are there with buying an tankless gas hot water heater ?
  • What factors deserve consideration when shopping for an effective tankless gas hot water heater ?
  • Why is it crucial to invest in any tankless gas hot water heater , much less the best one?
  • Which tankless gas hot water heater are good in the current market?
  • Where can you find information like this about tankless gas hot water heater ?

We’re convinced that you likely have far more questions than just these regarding tankless gas hot water heater , and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for tankless gas hot water heater , rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible tankless gas hot water heater . Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an tankless gas hot water heater buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available tankless gas hot water heater currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of tankless gas hot water heater has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an tankless gas hot water heater ?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your tankless gas hot water heater .
  5. Customer Ratings: Number ratings grade tankless gas hot water heater objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their tankless gas hot water heater .
  7. Product Quality: You don’t always get what you pay for with an tankless gas hot water heater , sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an tankless gas hot water heater is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining tankless gas hot water heater information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding tankless gas hot water heater is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

FAQ:

Q: What is the best brand of hot water heaters?

A: American Standard – Produces residential and commercial water heaters. American Water Heaters – Sub-brand of AO Smith sells many residential and commercial models. … Bosch – Electric,gas and solar waters heaters,as well as mini-tank systems. Navien – Specializes in tankless water heaters and boilers. …

Q: What is the best hot water heater?

A: Largest Water Heater Manufacturers. By market share,the water heater industry is dominated by a handful of brands. … Top Rated Water Heater Manufacturers. Consumer Reports offers a slightly altered list of top rated manufacturers based on sales,performance and variety. Tips for Buying Efficiently. … Performance vs. …

Q: How many BTUs does a tankless water heater use?

A: Whereas the industry standard water heater tank uses 36,000 BTU, the average tankless water heater requires anywhere from 150,000 to 200,000 BTU. The reason is that tankless water heaters need to get the water up to temperature almost instantaneously. To do that, it requires a very high volume of gas.

Q: What is the downside of a tankless water heater?

A: However, the downside of a tankless water heater is that it has a higher upfront cost, uses an immense amount of energy, and doesn’t provide water at all in case of a power outage.

Related Post: