Best Natural Gas Gas Water Heaters in 2025
Daisy
Last Updated: Nov 5, 2025
Daisy
Last Updated: Nov 5, 2025
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
Whole home indoor, gas powered tankless water heater, rated at 3 GPM that activates only on demand and no pilot light needed, reducing energy consumption
Sleek, modern design with black tempered glass front panel featuring an easy to use LED display controls
Features fully automatic temperature controls with an energy saving mode and child lock technology
Safe electronic ignition system; Plugs into standard 110v electrical outlet with UL-listed cord. Field tested to 5500 ft. elevation (not recommended to be used any higher)
Uses standard 1/2" NPT water fittings and comes with horizontal venting allowing for a convenient and quick installation
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| KART IT | 9.60 | ❌ | ❌ | ❌ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Northern Tool + Equipment | 9.71 | ❌ | ❌ | ❌ |
Whole home indoor, Natural Gas powered tankless water heater, rated at 6.8 GPM that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome!
The Eccotemp 45H/HI series is CSA Certified for US and Canadian use guaranteeing a safe, easy, and enjoyable installation experience.
4" Venting is required for the indoor models. Venting is available for purchase separately or you can purchase the unit and vent kit as a bundle.
The indoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there.
Comes with a Temperature and Pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Northern Tool + Equipment | 9.71 | ❌ | ❌ | ❌ |
Whole home outdoor, Natural Gas powered tankless water heater, rated at 6.8 GPM that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome!
The Eccotemp 45H/HI series is CSA Certified for US and Canadian use guaranteeing a safe, easy, and enjoyable installation experience
No venting required for this model, making the installation process quick, easy and hassle free
The outdoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there
Comes with a Temperature and Pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Northern Tool + Equipment | 9.71 | ❌ | ❌ | ❌ |
Whole home outdoor, Propane Gas powered tankless water heater, rated at 6.8 GPM that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome!
The Eccotemp 45H/HI series is CSA Certified for US and Canadian use guaranteeing a safe, easy, and enjoyable installation experience.
No venting required for this model, making the installation process quick, easy and hassle free.
The outdoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there.
Comes with a Temperature and Pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Triplenet Pricing INC | 9.81 | ❌ | ❌ | ❌ |
Lightweight, easy to carry, and compact, makes using it for camping, hunting, in your Tiny Home, RV’s, Poolside, Washing Pets, Equestrian, Cleaning Vehicles, Greenhouses or anywhere else that you need instant reliable endless hot water
Runs on a standard 20 lb. Liquid Propane tank and is equipped with an electronic ignition. Powered by 2 “D” cell batteries, making it ideal for on-the-go
Features a safety shut-off that is activated when the unit runs longer than 20 minutes or is tilted more than 45 degrees in either direction
Low pressure activation of 20 PSI and is easy to connect to any standard garden hose
Rated at 3.0 Gallons per minute (GPM) of hot water output with an achievable temperature range of 50 – 120 degrees Fahrenheit
What's Included: Eccotemp L10 Portable Tankless Water Heater, shower head, 1/2' CSA certified gas regulator and hose, mounting hardware, and garden hose quick connect and adapter
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Northern Tool + Equipment | 9.71 | ❌ | ❌ | ❌ |
Can meet all the hot water needs of any standard sized home
Automatic temperature controls
LED touch screen display
Sleek tempered glass casing
Natural gas powered
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| OJCommerce | 9.74 | ❌ | ❌ | ❌ |
Rated for 1-2 applications used simultaneously means that taking a shower and running a sink at the same time is effortless. The Eccotemp FVI12 is ideal for hot water heating applications in smaller residential single-family homes, condo, cabin, or apartments
Rated at 4.0 GPM at 80,000 BTUs with a temperature rise of 38 degrees, this ultra-efficient tankless water heater is ideal for just about every single-family home
Limited Manufacturer Warranty (Heat Exchanger: 5 Years, Parts: 2 Years), live chat, appointments for product support, self-help guides will give you peace of mind that the Eccotemp FVI12 will keep you in hot water for years
To ensure the longevity of the Eccotemp FVI12, we recommend cleaning every six months with Eccotemp's patented, one of a kind EZ-FLUSH Descaling Kit to remove all water scale build-up
Eccotemp FVI12 Series is not CSA approved.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Eccotemp | 5.20 | ❌ | ❌ | ❌ |
Rated for 4-5 applications means enjoying on-demand hot showers for up to 3 bathrooms simultaneously
Rated at 7 GPM (gallons per minute) at 180,000 BTUs with a temperature rise of 45 degrees, this ultra-efficient tankless hot water heater is the largest capacity model in the Eccotemp Builder Series and ideal for just about every size single-family home, townhome, condo, cabin, apartment, or light commercial use in the US and Canada
ETL certified for installation in the US and Canada. This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE
Advanced Generation 3 Computer board with high performance processing and smart adjust technology built in. Our proprietary developed programming meets and exceeds today’s consumer demands
With advanced incoming and outgoing water temperature sensor technology, you always have total confidence when it comes to safety
The 7GB Builder Series is designed for outdoor installation. Outdoor models do not require a venting system.
10-Year limited manufacturer warranty (heat element: 10-years, Parts: five years), live chat, appointments for product support, and self-help guides will give you peace of mind that the Eccotemp 7GB-NG will keep you in hot water for years
What's Included: Eccotemp 7.0 GPM Outdoor Natural Gas Tankless Water Heater (7GB-NG), mounting hardware, gas appliance shut off valve, remote control, and product manual
The Eccotemp 7GB-NG can be complemented with our patented, one of a kind EZ-Flush Descaling Kit to ensure your tankless water heater is running at maximum efficiency all year long
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Eccotemp | 5.15 | ❌ | ❌ | ❌ |
Rated for 3-4 applications means enjoying on-demand hot showers for up to 3 bathrooms simultaneously
Rated at 6.5 GPM (gallons per minute) at 170,000 BTUs with a temperature rise of 45 degrees, this ultra-efficient tankless hot water heater is the second largest capacity model in the Eccotemp Builder Series and ideal for just about every size single-family home, townhome, condo, cabin, apartment, or light commercial use in the US and Canada
CSA certified for installation in the US and Canada. This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE
Advanced Generation 3 Computer board with high performance processing and smart adjust technology built in. Our proprietary developed programming meets and exceeds today’s consumer demands
With advanced incoming and outgoing water temperature sensor technology, you always have total confidence when it comes to safety
The 6.5GB Builder Series is designed for indoor installation only and requires 3-inch venting. Make installation a breeze using the Eccotemp 3" Horizontal Vent Kit or 3” Vertical Vent Kit (purchased separately).
10-Year limited manufacturer warranty (heat element: 10-years, Parts: five years), live chat, appointments for product support, and self-help guides will give you peace of mind that the Eccotemp 6.5GB-ING will keep you in hot water for years
What's Included: Eccotemp 6.5 GPM Indoor Natural Gas Tankless Water Heater (6.5GB-ING), mounting hardware, gas appliance shut off valve, and product manual
The Eccotemp 6.5GB-ING can be complemented with our patented, one of a kind EZ-Flush Descaling Kit to ensure your tankless water heater is running at maximum efficiency all year long
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Eccotemp | 10 |
We've carried out a comprehensive analysis of 1,924 reviews on gas water heaters, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select gas water heaters priced around $547.21, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 10 gas water heaters for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right heaters Products based on their needs, saving them considerable time when choosing which gas water heaters to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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