Rheem RTG-70XLN-3
Rheem RTG-70XLN-3 is in the DOE listing as of Oct 19, 2026.
- Gas tankless water heater
- 6 listed models
Not listed as ENERGY STAR certified on Oct 19, 2026.
Its figures are also listed under Rheem RTG-70DVLN-3.
Certified and advertised figures
- Flow at a 67°F rise
- 4.0gallons per minuteCertified
- Advertised flow
- 7.0gallons per minuteRheem, no rise stated
- UEF
- 0.82Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
The heater gives less flow when colder incoming water needs a bigger rise.
- Cold water
- Cold water must be at least 10°F colder than the hot water setting.
- Flow estimate
- The estimate uses the lowest certified flow among the listed models. It is about 3.8 gal/min at a 70°F rise.
Flow limits
- The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
- Cold water from a well or long pipe run can differ from the temperature you enter.
- Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.
Advertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| UEF | 0.82 | 0.82 | The Home Depot | Archived copy, Sep 4, 2026 |
| Flow | 7.0 gal/min, no rise stated | 4.0 gal/min at a 67°F rise | Rheem | Read Oct 4, 2026 |
| Flow | 7.0 gal/min at a 35°F rise | 4.0 gal/min at a 67°F rise | The Home Depot | Archived copy, Sep 4, 2026 |
| Flow | 6.0 gal/min at a 45°F rise | 4.0 gal/min at a 67°F rise | The Home Depot | Archived copy, Sep 4, 2026 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| ECO160XLN-3 | 0.82 | 4.0 | 84% | High |
| ECO160XLP-3 | 0.82 | 4.0 | 84% | High |
| RTG-70XLN-3 | 0.82 | 4.0 | 84% | High |
| RTG-70XLP-3 | 0.82 | 4.0 | 84% | High |
| RTG-R70XELN-3 | 0.82 | 4.0 | 84% | High |
| RTG-R70XELP-3 | 0.82 | 4.0 | 84% | High |
UEF is the uniform energy factor. A dash means the model has no such figure.
At a 67°F rise, its flow in the test is 4.0 gallons per minute. The median gas tankless model heats 4.8 gallons per minute by 67°F. Its flow at a 67°F rise trails 385 of the 487 gas tankless models.
It was not listed as ENERGY STAR certified on Oct 19, 2026. In the test, 18% of its energy does not reach the hot water (UEF 0.82). The daily hot water use in the test, called its draw pattern, was high. Of 399 gas tankless models with the same draw pattern, 243 have a higher UEF and 72 a lower one. On its draw pattern, the median gas tankless UEF is 0.93. Of the energy it spends heating water, 84% ends up in it (its recovery efficiency).
A tag or quote may show any of its 6 model numbers. Its test figures match those of 8 other basic models. Besides this brand, 4 brands list one or more of them. You can find the whole group on the page for the Rheem RTG-70DVLN-3.
In one state, one rebate program may accept it if it meets their other terms.
Also listed as
They carry every figure in the table above.
Rebates
| Program | State | Status | Program page |
|---|---|---|---|
| SoCalGas High-Efficiency or ENERGY STAR Certified Natural Gas Tankless Water Heaters rebate | CA | May qualify if it meets the other terms | Its own page |
Programs change their terms. Check the program's own page before you buy.
- Every Rheem basic model
- Every gas tankless water heater certified at 4.0 to 4.9 gallons per minute
- Every gas tankless water heater
- The most-searched gas tankless models side by side
Not covered
- Changes to an advertised figure after the date beside it.