Richmond RTG-84XLN-1
Richmond RTG-84XLN-1 has a certified UEF of 0.81 and a certified flow of 4.5 gal/min at a 67°F rise.
- Gas tankless water heater
- 1 listed model
Not listed as ENERGY STAR certified on Oct 26, 2026.
Certified figures
- Flow at a 67°F rise
- 4.5gallons per minute
- UEF
- 0.81Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
A bigger rise from colder incoming water leaves the heater with 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 |
|---|---|---|---|---|
| RMTG84XLN-1 | 0.81 | 4.5 | 83% | 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 4.5 gallons per minute. The gas tankless type has a median flow of 4.8 gallons per minute. Of 487 gas tankless models, 319 have a higher flow than this one.
As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 81% of the energy it uses ends up as hot water (UEF 0.81). Its test simulated a day of high hot water use (its draw pattern). Among 399 gas tankless models on its draw pattern, 327 have a higher UEF. A UEF of 0.93 is the median for its type and draw pattern. When it runs, 83% of the energy it uses reaches the water (its recovery efficiency).
Its test figures match those of one other basic model. That one carries the Ruud brand name.
Also listed as
They carry every figure in the table above.
- Every Richmond 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.