Ruud SFT 199-1
Ruud SFT 199-1 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 SFT 199-1.
Certified and advertised figures
- Flow at a 67°F rise
- 5.3gallons per minuteCertified
- Advertised flow
- 10.1gallons per minuteRuud, at a 35°F rise
- 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 5.1 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 |
|---|---|---|---|---|
| UEF | 0.90 | 0.90 | Ruud | Read Oct 5, 2026 |
| Flow | 10.1 gal/min at a 35°F rise | 5.3 gal/min at a 67°F rise | Ruud | Read Oct 5, 2026 |
| Flow | 7.9 gal/min at a 45°F rise | 5.3 gal/min at a 67°F rise | Ruud | Read Oct 5, 2026 |
| Flow | 5.4 gal/min at a 67°F rise | 5.3 gal/min at a 67°F rise | Ruud | Read Oct 5, 2026 |
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| CRUTGH-L199* | 0.90 | 5.3 | 93% | High |
| RUTGH-L199* | 0.90 | 5.3 | 93% | 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 5.3 gallons per minute. The gas tankless type has a median flow of 4.8 gallons per minute. Its flow at a 67°F rise trails 120 of the 487 gas tankless models.
It was not listed as ENERGY STAR certified on Oct 19, 2026. In tests, 90% of the energy it uses ends up as hot water (UEF 0.90). In the test, daily hot water use was set to high (its draw pattern). Of 399 gas tankless models with the same draw pattern, 232 have a higher UEF. For its type and draw pattern, the median UEF is 0.93. When it runs, 93% of the energy it uses reaches the water (its recovery efficiency).
It is the basic model for CRUTGH-L199* and RUTGH-L199*. There are 3 more basic models with the same test figures. Of those, one or more are under the IBC Technologies, Rheem, and Richmond brands. You can find the whole group on the page for the Rheem SFT 199-1.
It may qualify for 2 rebate programs in 2 states. It may qualify for 2 more 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 |
| 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 Ruud basic model
- Every gas tankless water heater certified at 5.0 to 5.9 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.