20 Best Tankless Hot Water Heater Natural Gas [2024]

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

We Recommended:

# Preview Product
1 Rinnai CU199iN Natural Gas Condensing Tankless Hot Water Heater, 11 GPM Rinnai CU199iN Natural Gas Condensing Tankless Hot Water Heater, 11 GPM
2 Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater Rheem Prestige High Efficiency 9.5GPM Indoor Natural Gas Tankless Water Heater
3 Rinnai V94XiN Natural Gas Tankless Hot Water Heater, 9.8 GPM Rinnai V94XiN Natural Gas Tankless Hot Water Heater, 9.8 GPM
4 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...
5 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
6 Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170000 BTU White Instant Hot Water... Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170000 BTU White Instant Hot Water...
7 Rinnai RL94eN Non-Condensing Natural Gas Tankless Water Heater, Outdoor Installation, Up to 9.8 GPM Rinnai RL94eN Non-Condensing Natural Gas Tankless Water Heater, Outdoor Installation, Up to 9.8 GPM
8 Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM - RTGH-95XLN-2 Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM - RTGH-95XLN-2
9 MAREY GA24CSANG Max 8.34GPM, High Efficiency, CSA Certified, Residential Multiple Points of Use... MAREY GA24CSANG Max 8.34GPM, High Efficiency, CSA Certified, Residential Multiple Points of Use...
10 Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating... Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating...
11 RHEEM RTGH-84DVLN-2 Natural Gas Condensing Tankless Water Heater, Silver , Gray RHEEM RTGH-84DVLN-2 Natural Gas Condensing Tankless Water Heater, Silver , Gray
12 Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon Per... Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon...
13 Rinnai RUCS75iN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation Rinnai RUCS75iN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation
14 Rheem Mid-Efficiency 7.0GPM Indoor Natural Gas Tankless Water Heater Rheem Mid-Efficiency 7.0GPM Indoor Natural Gas Tankless Water Heater
15 Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters, White Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters, White
16 Rheem Mid-Efficiency 7.0GPM Outdoor Natural Gas Tankless Water Heater Rheem Mid-Efficiency 7.0GPM Outdoor Natural Gas Tankless Water Heater
17 Rinnai RUR199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor Installation Rinnai RUR199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor Installation
18 Eccotemp fvi12-NG FVI-12 Natural Gas, 3.5 GPM, High Capacity Tankless Water Heater, White Eccotemp fvi12-NG FVI-12 Natural Gas, 3.5 GPM, High Capacity Tankless Water Heater, White
19 Rheem Prestige Condensing Tankless Indoor Liquid Propane Water Heater with Built in Recirculation... Rheem Prestige Condensing Tankless Indoor Liquid Propane Water Heater with Built in Recirculation...
20 Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
Bestseller No. 1
Rinnai CU199iN Natural Gas Condensing Tankless Hot Water Heater, 11 GPM
  • Energy and Space Efficient: Space-saving design conserves energy as it only heats when necessary; multiple venting options offer installation...
  • Optimal Water Pressure: High-performance 11 GPM hot water flow rate for a powerful, constant stream
  • Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on...
  • Guaranteed to Last: 8-, 5-, and 1-year commercial warranty for heat exchanger, parts, and labor, respectively
SaleBestseller No. 2
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
SaleBestseller No. 3
Rinnai V94XiN Natural Gas Tankless Hot Water Heater, 9.8 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 up to 9.8 GPM hot water flow rate for a powerful, constant stream
  • Enhanced scale detection lessens possibility of serious, long-term damage to unit
  • Guaranteed to Last: 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively
SaleBestseller No. 4
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
Bestseller No. 5
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. 6
Natural Gas Tankless Water Heater, FOGATTI Indoor 7.5 GPM, 170000 BTU White Instant Hot Water...
  • 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. 7
Rinnai RL94eN Non-Condensing Natural Gas Tankless Water Heater, Outdoor Installation, Up to 9.8 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. 8
Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM - RTGH-95XLN-2
  • 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 outdoors with freeze protection up to -30 degrees
SaleBestseller No. 9
MAREY GA24CSANG Max 8.34GPM, High Efficiency, CSA Certified, Residential Multiple Points of Use...
  • Continuous Hot Water On Demand: This Marey whole-house indoor tankless water heater provides a flow rate of 4.2GPM – 8.34 GPM. Please refer to our...
  • CSA Certified for the US and Canada markets.
  • Saves Money and Space: The 24L tankless water heater has an indoor wall-mounted design that frees up storage space. The unit comes with a LED digital...
  • Multiple Safety Features: Overheating Protection, Flame-failure Protection and Anti-freeze Protection.
  • We recommend installation be performed by a professional for safety and compliance.
SaleBestseller No. 10
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating...
  • Lifetime warranty
  • Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
  • Never run out of hot water with an ECOSMART tankless water heater
  • Patented Self Modulating Technology and design.Activation flow 0.3 GPM
  • ECOSMART tankless water heaters are 99.8-percent energy efficient
Bestseller No. 11
RHEEM RTGH-84DVLN-2 Natural Gas Condensing Tankless Water Heater, Silver , Gray
  • 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
Bestseller No. 12
Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon Per...
  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation
  • Computerized safety features, No pilot light to have to worry about
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes
  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions
  • Primary heat exchanger utilizes commercial-grade copper alloy for 25 times better heat transfer than stainless steel, Integrated controls and power...
Bestseller No. 13
Rinnai RUCS75iN Tankless Hot Water Heater, 7.5 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 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. 14
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
SaleBestseller No. 15
Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters, White
  • Whole home indoor, gas powered tankless water heater, rated at 3.6 GPM that activates only when in use, making it an energy saver.
  • For indoor installation with safe, efficient power ventilation and perfect for any small home, cabin or apartment.
  • Easy to read digital temperature display, on a compact and space-saving design with minimal noise output.
  • Safe electronic ignition system; plugs into standard 120v electrical outlet with UL-listed cord.
  • Uses standard 1/2" NPT water fittings and is equipped with easy to use manual water temperature controls.Minimum 0.65 GPM flow rate
Bestseller No. 16
Rheem Mid-Efficiency 7.0GPM Outdoor 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
  • Easy, Convenient Control –Easily adjust water temperature ranging from 85˚F–140˚F
  • For use outdoors with freeze protection up to -30 degrees
SaleBestseller No. 17
Rinnai RUR199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor 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: ThermaCirc360 technology provides faster hot water with a built-in recirculation pump, timer and thermal bypass valve - ideal for...
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
Bestseller No. 18
Eccotemp fvi12-NG FVI-12 Natural Gas, 3.5 GPM, High Capacity Tankless Water Heater, White
  • Whole home indoor, gas powered tankless water heater, rated at 3.6 GPM that activates only when in use, making it an energy saver.
  • For indoor installation with safe, efficient power ventilation and perfect for any small home, cabin or apartment.
  • Easy to read digital temperature display, on a compact and space-saving design with minimal noise output.
  • Safe electronic ignition system; plugs into standard 120v electrical outlet with UL-listed cord.
  • Uses standard 1/2" NPT water fittings and is equipped with easy to use manual water temperature controls.
Bestseller No. 19
Rheem Prestige Condensing Tankless Indoor Liquid Propane Water Heater with Built in Recirculation...
  • 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
  • Auto-Learn Programming - tracks water usage over a period of time and auto-programs to meet hot water needs at peak times
Bestseller No. 20
Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
  • 94-Percent Energy efficient with stainless-steel condensing heat exchanger
  • Intelligent electronic controls designed to increase energy efficiency and safety
  • Third party efficiency listed by AHRI
  • Up to 38-Feet of 3-Inch PVC Pipe or 5-Feet of 2-Inch PVC Pipe
  • Low Nox Version

Having trouble finding a great tankless hot water heater natural gas ?

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

After hours of searching and using all the models on the market, we have found the best tankless hot water heater natural gas for 2023. See our ranking below!

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

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

We understand, because we’ve already gone through the whole process of researching tankless hot water heater natural gas , which is why we have assembled a comprehensive list of the greatest tankless hot water heater natural gas 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 hot water heater natural gas that you consider buying. Your questions might include the following:

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

We’re convinced that you likely have far more questions than just these regarding tankless hot water heater natural gas , 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 hot water heater natural gas , 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 hot water heater natural gas . Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an tankless hot water heater natural gas 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 hot water heater natural gas 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 hot water heater natural gas 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 hot water heater natural gas ?
  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 hot water heater natural gas .
  5. Customer Ratings: Number ratings grade tankless hot water heater natural gas objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their tankless hot water heater natural gas .
  7. Product Quality: You don’t always get what you pay for with an tankless hot water heater natural gas , sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an tankless hot water heater natural gas is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining tankless hot water heater natural gas 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 hot water heater natural gas is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

FAQ:

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: Who sells tankless water heaters?

A: Tankless water heaters, also known as instant … Our client base includes players from across various business verticals in over 57 countries worldwide. We sell different types of products and services to both investment professionals and individual …

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: How do you fix a hot water heater?

A: Turn off the breaker to the water heater’s circuit in the service panel. Remove the access panel for the upper heating element on the water heater. Remove the insulation and the plastic safety guard,being careful not to touch any wires or electrical terminals.

Related Post: