Midea MGWH150ISPN
Midea MGWH150ISPN 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 Midea MGWH150ISNN.
Certified figures
- Flow at a 67°F rise
- 3.7gallons per minute
- UEF
- 0.82Uniform 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 3.5 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 |
|---|---|---|---|---|
| MGWH150ISPN | 0.82 | 3.7 | 85% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It warms 3.7 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. Its flow at a 67°F rise trails 405 of the 487 gas tankless models.
On Oct 19, 2026, this heater was not listed as ENERGY STAR certified. In the test, 18% of its energy does not reach the hot water (UEF 0.82). Its test ran at the medium level of daily hot water use. Of 77 gas tankless models with the same draw pattern, 30 have a higher UEF. On its draw pattern, its UEF is also the median gas tankless UEF. Of the energy it spends heating water, 85% ends up in it (its recovery efficiency).
Its test figures match those of one other basic model. For the full group, see the Midea MGWH150ISNN.
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 Midea 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.