Ranein RH8K-LPG
Ranein RH8K-LPG is in the DOE listing as of Oct 19, 2026.
- Gas tankless water heater
- 1 listed model
Not listed as ENERGY STAR certified on Oct 19, 2026.
Its figures are also listed under Noritz NR662-OD-NG.
Certified figures
- Flow at a 67°F rise
- 3.6gallons per minute
- 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 3.4 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.
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| RH8K-LPG | 0.82 | 3.6 | 84% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 3.6 gallons per minute of water by 67°F in the test. The median flow among gas tankless models is 4.8 gallons per minute. Of 487 gas tankless models, 409 have a higher flow than this one.
As of Oct 19, 2026, it was not listed as ENERGY STAR certified. In the test, 18% of its energy does not reach the hot water (UEF 0.82). In the test, daily hot water use was set to medium (its draw pattern). Its UEF is lower than that of 30 of the 77 gas tankless models with its draw pattern. For its type and draw pattern, its UEF sits at the median. When it runs, 84% of the energy it uses reaches the water (its recovery efficiency).
All of its test figures are shared by 3 other basic models. Those basic models are sold with Noritz, THERMALUX, and Vancepic as their brand names. For the full group, see the Noritz NR662-OD-NG page.
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 Ranein 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
- Advertised figures. We have none on file for this model.