Friedrich RTG-84DVLN-3
Friedrich RTG-84DVLN-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 RTG-84DVLN-3.
Certified figures
- Flow at a 67°F rise
- 4.5gallons per minute
- UEF
- 0.82Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
Colder incoming water needs a bigger rise, so the heater gives less flow.
- 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 4.3 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.
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| FDTG-84DVLN-3 | 0.82 | 4.5 | 84% | High |
| FDTG-84DVLP-3 | 0.82 | 4.5 | 84% | High |
UEF is the uniform energy factor. A dash means the model has no such figure.
It warms 4.5 gallons per minute of water from 58°F to 125°F in the test. The gas tankless type has a median flow of 4.8 gallons per minute. Among 487 gas tankless models, 319 give more flow at a 67°F rise.
As of Oct 19, 2026, it was not listed as ENERGY STAR certified. In tests, 82% of the energy went to hot water, so its UEF is 0.82. Its test ran at the high level of daily hot water use. Among 399 gas tankless models on its draw pattern, 243 have a higher UEF. A UEF of 0.93 is the median for its type and draw pattern. Of the energy it spends heating water, 84% ends up in it (its recovery efficiency).
Its 2 model numbers are FDTG-84DVLN-3 and FDTG-84DVLP-3. All of its test figures are shared by 4 other basic models. Each of the 4 other brands lists one of them. For the full group, see the Rheem RTG-84DVLN-3 page.
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 Friedrich 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
- Advertised figures. We have none on file for this model.