The Best Tankless Gas Water Heater – 2022

After hours of researching and comparing all models on the market, we find out the Best Tankless Gas Water Heater of 2022. Check our ranking below.

Our Picks For The Top Tankless Gas Water Heater


Bestseller No. 1
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 non-condensing technology that speeds up service and installation, check out our new RE160iN model
  • 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 small suitcase and fits in a wide variety of spaces, but provides up to 7.5 GPM (5 fixtures at once)
  • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
Bestseller No. 2
Rinnai V65eN Non-Condensing Natural Gas Tankless Water Heater, Outdoor Installation, Up to 6.5 GPM
  • Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installation, check out our new RE160eN model
  • 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 small suitcase and fits in a wide variety of spaces, but provides up to 6.5 GPM (5 fixtures at once)
  • Smart, Durable Design: Enhanced scale detection helps prevent serious, long-term damage to unit; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
Bestseller No. 3
Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170,000 BTU White Instant Hot Water Heater, InstaGas Comfort 170 Series
  • We recommend that all installations of units must be done by the local building and plumbing codes of the installation location and installation be done by a licensed professional.
  • 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 energy conversion rate can effectively reduce energy loss.
  • 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 installation.
Bestseller No. 4
Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater
  • Hot water without the wait - or the waste
  • Low operating cost - High energy efficiency and water savings setting
  • Space Savings - Compact, space-saving design. Perfect for a tank replacement.
  • Water & Gas Leak Detection will shut down unit and provide an error code
  • For use indoor only
Bestseller No. 5
Rheem Mid-Efficiency 7.0GPM Indoor Natural Gas Tankless Water Heater
  • Continuous Hot Water – never run out of hot water, even with back-to-back showers
  • Tankless Gas Water Heaters are cost saving and energy efficient
  • Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need
  • Reduces Energy Consumption – All Rheem tankless gas models automatically adjust the amount of energy required to heat the water you need.
  • Easy, Convenient Control – Rheem's tankless remote electronic thermostat allows easy adjustment of water temperature ranging from 85˚F–140˚F
Bestseller No. 6
Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected], 6 x 11 x 3 Inch
  • Can provide hot water for one sink at 0.5 GPM in warmer climates
  • Requires 1 x 30 amp breaker and 10 AWG wire
  • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
  • Amperage Draw 29 amp. kW - 3.5 kW
  • Connection Fittings 1/2" NPT
Bestseller No. 7
MAREY GA24CSALP 8.34GPM, High Efficienty, CSA Certified, Residential Multiple Points of Use Liquid Propane Gas Tankless Water Heater, White
  • CSA Certified
  • LED Touch Screen Computerized Safety
  • Flow activation
  • Oxygen free copper heat exchanger
  • Stainless Steel Venting Exhaust
Bestseller No. 8
Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas)
  • Note: Please download and read the installation manual and product manual carefully when purchasing the product to ensure that your installation environment is consistent with this product. When installing, please strictly follow the installation manual and installation instruction video, otherwise it may not work. If you have any questions about the product, please contact us by email. We have a professional technical support team.
  • 【Tankless Instant Hot Water Heater】No need to preheat before using the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature.
  • 【High Sensitive Touch Led Display】Comes with smart digital LED display high-definition large screen, freely adjustable the temperature between 30℃-65℃.
  • 【Multiple Security Protection】The natural gas water heater is upgraded with 12 protection methods to ensure your safety. Such as dry burning protection, over 65℃(149 °F) protection, leakage protection, etc.Note: In cold weather, if the water heater is not used for a long time, it is necessary to open the pressure relief valve to drain the residual water in the water heater to prevent the exchanger or water pipe from freezing and swelling.
  • 【Energy and Money Saving】The hot water heater adjusts power input based on flow rate and temp setting in real time. Summer/winter 2 modes to save up to 60% on your natural gas costs.
SaleBestseller No. 9
Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
  • Sleek and compact design with digital output temperature display
  • ECOSMART tankless water heaters are 99.8-percent energy efficient
  • Manufactured in United States
  • Pipe Fittings:3/4 inch NPT
  • Required Breaker:4 x 40 A
Bestseller No. 10
TCFUNDY 16L Tankless Water Heater Propane Gas, 4.23 GPM On-Demand Instant Hot Water Heater, Indoor Whole House Gas Water Heater, Digital Display & Touch Screen, Thermostatic & Energy Saving
  • 【16L Tankless Water Heater】TCFUNDY Tankless water heater with compact design saves more space and energy efficient than traditional water heaters. LCE screen with digital temperature display and touch screen control. There are 3 modes you can choose: eco mode, common mode, tub mode.
  • 【On-Demand Instant Water Heater】High efficiency propane gas tankless water heater delivers 4.23 gallons per minute of on-demand endless hot water. No more waiting for long time, instant hot water for families, homes, cabins or apartments.
  • 【Thermostatic & Energy Saving】Water heater built-in high-precision thermostat ensures constant temperature, high-thermal efficiency up to 90%. The self-modulating temperature technology only heat up water while you are using it to save energy.
  • 【Safety of Use】Premium Oxygen-Free Copper Heat Exchanger to ensure long lifespan, automatic power-off when water is off and over-temperature protection, flame-out protection, anti-freezing protection(manual drainage needed via water relief valve), air flow pressure switch protection to ensure the safety.
  • 【Easy Installation】Comes with 18.9“x2.36" horizontal vent pipe to ensure efficient power ventilation, with showerhead. Minimum activation rate: 0.66 GPM. Min. water pressure: 2.9 PSI, low water pressure to start, users of higher floors can enjoy pleasant experience of shower.


How Do You Buy The Best Tankless Gas Water Heater?


Do you get stressed out thinking about shopping for a great Tankless Gas Water Heater? Do doubts keep creeping into your mind? We understand because we’ve already gone through the whole process of researching Tankless Gas Water Heater, which is why we have assembled a comprehensive list of the greatest Tankless Gas Water Heater available in the current market. We’ve also come up with a list of questions that you probably have yourself.


We’ve 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 Water Heater that you consider buying. Your questions might include the following:

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

We’re convinced that you likely have far more questions than just these regarding Tankless Gas 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 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 Water Heater. Make sure that you are only using trustworthy and credible websites and sources.


We provide an Tankless Gas 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 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 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 Water Heater?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: his simply is how much bang for the buck you get from your Tankless Gas Water Heater.
  5. Customer Ratings: Number ratings grade Tankless Gas 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 Water Heater.
  7. Product Quality: You don’t always get what you pay for with an Tankless Gas Water Heater, sometimes less, and sometimes more.
  8. Product Reliability: ow sturdy and durable an Tankless Gas Water Heater is should be an indication of how long it will work out for you. .

We always remember that maintaining Tankless Gas 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 Water Heater is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here . Or You can read more about us to see our vision.

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