Today we are taking a look at some of the very top best natural gas water heater
The best best natural gas water heater
Mizudo Natural Gas Tankless Water Heater 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water heater
out of stock
Amazon.com
as of April 18, 2026 1:45 pm
Features
- Energy Efficient Operation: On-demand heating, tankless water heater only consumes gas during use. Oxygen-free copper heat exchanger provides faster heating than standard steel models
- Integrated Protection System: This natural gas tankless water heater is provided with built-in safeguards such as freeze protection, leak detection, overheat cutoff, and wind-resistant ignition
- US Home Compatibility: The gas water heater indoor is compact 20.5 x 13.0 x 7.0 in. Natural gas powered indoor unit. Operates on 120V power with 3/4" NPT connectors. UEF >0.81
Rheem RTGH-68DVLN-3 Super High Efficiency Condensing Indoor Tankless Natural Gas Water Heater, 6.8 GPM
out of stock
Amazon.com
as of April 18, 2026 1:45 pm
Features
- Flow rate of 0.4 - 6.8 GPM
- Available temperature settings range from 100 to 140F (default setting of 120F)
- Includes electric ignition
- Covered under 1 year labor, 15 year heat exchanger, and 5 year parts manufacturer warranties
- Width 17-11/16-in
Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas)
out of stock
Amazon.com
as of April 18, 2026 1:45 pm
Features
- 【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.The screws for the water pipe joint and gas inlet are G1/2", and we provide a 3/4NPT adapter. Please install according to the installation manual or installation video and contact us if you have any questions.
- 【High Sensitive Touch Led Display】Comes with smart digital LED display high-definition large screen, freely adjustable the temperature between 30℃-65℃. Please install according to the installation manual or installation video and contact us if you have any questions.
- 【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: When the temperature is below 32 degrees Fahrenheit, please drain the remaining water in the water heater at any time after use to prevent the exchanger or water pipes from freezing and bursting. Please refer to the manual for details.
- 【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. Please install according to the installation manual or installation video and contact us if you have any questions.
- 【Quality Material】Made with brushed stainless steel material, the natural gas water heater has the function of high temperature resistance, corrosion resistance. Built-in oxygen-free copper water tank, long service time.Note: This product must be installed with a ventilation and smoke exhaust pipe for normal use. Please install according to the installation manual or installation video and contact us if you have any questions.
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Price Drops Alerts
Mizudo Natural Gas Tankless Water Heater 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water heater, MIZUDO
out of stock
BUY NOW
Amazon.com
Wait For A Price Drop
Price History
Statistics
| Current Price | - | April 18, 2026 |
| Highest Price | 399.00 | December 1, 2025 |
| Lowest Price | 268.48 | December 18, 2025 |
Since December 1, 2025
Last price changes
| 268.48 | December 18, 2025 |
| 399.00 | December 1, 2025 |
Rheem RTGH-68DVLN-3 Super High Efficiency Condensing Indoor Tankless Natural Gas Water Heater, 6.8 GPM, Rheem
out of stock
BUY NOW
Amazon.com
Wait For A Price Drop
Price History
Statistics
| Current Price | - | April 18, 2026 |
| Highest Price | 1,040.99 | December 2, 2025 |
| Lowest Price | 1,001.00 | December 14, 2025 |
Since December 2, 2025
Last price changes
| 1,001.00 | December 14, 2025 |
| 1,040.99 | December 2, 2025 |
Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas), Runnatal
out of stock
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Amazon.com