Friedrich RTGH-68DVLN-3
Friedrich RTGH-68DVLN-3 is in the DOE listing as of Oct 19, 2026.
- Gas tankless water heater
- 2 listed models
Not listed as ENERGY STAR certified on Oct 19, 2026.
Its figures are also listed under Rheem RTGH-68DVLN-3.
Certified figures
- Flow at a 67°F rise
- 3.5gallons per minute
- UEF
- 0.90Uniform 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 3.4 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 |
|---|---|---|---|---|
| Flow | 6.6 gal/min at a 35°F rise | 3.5 gal/min at a 67°F rise | Friedrich | Read Oct 4, 2026 |
| Flow | 5.1 gal/min at a 45°F rise | 3.5 gal/min at a 67°F rise | Friedrich | Read Oct 4, 2026 |
| Flow | 3.4 gal/min at a 67°F rise | 3.5 gal/min at a 67°F rise | Friedrich | Read Oct 4, 2026 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| FDTGH-68DVLN-3 | 0.90 | 3.5 | 92% | Medium |
| FDTGH-68DVLP-3 | 0.90 | 3.5 | 92% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 3.5 gallons per minute of water by 67°F in the test. The median gas tankless model heats 4.8 gallons per minute by 67°F. Of 487 gas tankless models, 426 have a higher flow than this one.
It was not listed as ENERGY STAR certified on Oct 19, 2026. In tests, 90% of the energy went to hot water, so its UEF is 0.90. In the test, daily hot water use was set to medium (its draw pattern). Of 77 gas tankless models with the same draw pattern, 8 have a higher UEF. For its type and draw pattern, the median UEF is 0.82. Of the energy it spends heating water, 92% ends up in it (its recovery efficiency).
Its 2 model numbers are FDTGH-68DVLN-3 and FDTGH-68DVLP-3. Its test figures match those of 2 other basic models. Those basic models are sold with Rheem and Ruud as their brand names. For the full group, see the Rheem RTGH-68DVLN-3 page.
In 2 states, 2 rebate programs may accept it. Another 2 rebate programs 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 |
| Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless) | MN | May qualify | Its own page |
| PSE&G Tankless Water Heaters | NJ | May qualify | Its own page |
| Focus on Energy (gas tankless) | WI | 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 Friedrich basic model
- Every gas tankless water heater certified below 4.0 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.