Rheem RTG-84DVLN-3
Rheem RTG-84DVLN-3 is in the DOE listing as of Oct 26, 2026.
It has a certified UEF of 0.82 and a certified flow of 4.5 gal/min at a 67°F rise.
Its certified flow is 4.5 gal/min at a 67°F rise, while Rheem advertises 8.4 gal/min, no rise stated (Read Oct 4, 2026), so a comparison at the same rise is not possible.
- Gas tankless water heater
- 4 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Certified and advertised figures
- Flow at a 67°F rise
- 4.5gallons per minuteCertified
- Advertised flow
- 8.4gallons 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 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.
Advertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Flow | 8.4 gal/min, no rise stated | 4.5 gal/min at a 67°F rise | Rheem | Read Oct 4, 2026 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| ECO180DVELN-3 | 0.82 | 4.5 | 84% | High |
| ECO180DVELP-3 | 0.82 | 4.5 | 84% | High |
| RTG-84DVLN-3 | 0.82 | 4.5 | 84% | High |
| RTG-84DVLP-3 | 0.82 | 4.5 | 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 4.5 gallons per minute. The median flow among gas tankless models is 4.8 gallons per minute. Its flow at a 67°F rise trails 319 of the 487 gas tankless models.
It was not listed as ENERGY STAR certified on Oct 26, 2026. In tests, 82% of the energy it uses ends up as hot water (UEF 0.82). In the test, daily hot water use was set to high (its draw pattern). Of 399 gas tankless models with the same draw pattern, 243 have a higher UEF and 72 a lower one. For its type and draw pattern, the median UEF is 0.93. When it runs, 84% of the energy it uses reaches the water (its recovery efficiency).
All 4 of its model numbers carry the same certified figures. There are 4 more basic models with the same test figures. They are listed under 4 other brands, one each.
It may qualify for one rebate program if it meets terms its figures do not show.
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.