Stream 33 MGWH199IXNN
Stream 33 MGWH199IXNN is in the DOE listing as of Oct 19, 2026.
- Gas tankless water heater
- 4 listed models
Not listed as ENERGY STAR certified on Oct 19, 2026.
Its figures are also listed under Elios EROD199N0000.
Certified figures
- Flow at a 67°F rise
- 5.7gallons per minute
- UEF
- 0.95Uniform 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 5.5 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 |
|---|---|---|---|---|
| S33-95TWH199-LP | 0.95 | 5.7 | 99% | High |
| S33-95TWH199-NG | 0.95 | 5.7 | 99% | High |
| S33-95TWH199P-LP | 0.95 | 5.7 | 99% | High |
| S33-95TWH199P-NG | 0.95 | 5.7 | 99% | High |
UEF is the uniform energy factor. A dash means the model has no such figure.
It warms 5.7 gallons per minute of water from 58°F to 125°F in the test. The median flow among gas tankless models is 4.8 gallons per minute. Of 487 gas tankless models, 60 have a higher flow than this one.
It was not listed as ENERGY STAR certified on Oct 19, 2026. In tests, 95% of the energy went to hot water, so its UEF is 0.95. Its test simulated a day of high hot water use (its draw pattern). Of 399 gas tankless models with the same draw pattern, 49 have a higher UEF. For its type and draw pattern, the UEF runs from 0.81 to 0.98. When it runs, 99% of the energy it uses reaches the water (its recovery efficiency).
All 4 of its model numbers carry the same certified figures. Its test figures match those of 15 other basic models. Besides this brand, 4 brands list one or more of them. You can find the whole group on the page for the Elios EROD199N0000.
In 2 states, 2 rebate programs may accept it. 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.
- Elios EROD199N0000
- Elios MGWH199IXNN
- Kepler JSG52-32PCH-NG
- Kepler JSG52-32PCH/199KNP
- Kepler MGWH199IXNN
- Kepler MGWH199IXNP
- Midea JSG52-32PCH-LP
- Midea JSG52-32PCH-NG
- Midea MGWH199IXNN
- Midea MGWH199IXNP
- Midea MGWH199IXPN
- Midea MGWH199IXPP
3 more basic models carry these figures.
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 Stream 33 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
- Advertised figures. We have none on file for this model.