waterheaterspecs

Gas tankless · high draw

Midea MGWH150IXNN

Midea MGWH150IXNN is a gas tankless water heater certified as a single rating set, 4 model numbers sold as Midea, listed by Midea America. Max flow 4.4 gal/min at a 67 °F rise from 150,000 Btu/h of gas input, UEF 0.95 at the high draw pattern. This set lists 4.4 gal/min, the fifth lowest of the 40 gas tankless sets (shared by three sets). That UEF is 0.01 below the median of the 39 high-draw gas tankless sets (0.96).

Certified as of October 27, 2026 · EPA ENERGY STAR data, public domain · Compare in the Heater finder

Certified values

Certified values of Midea MGWH150IXNN
Rating setGas input, Btu/hMax flow, gal/minShare of heat ceilingUEFUEF rankTherms/yr
Midea MGWH150IXNN4 model numbers150,0004.498%0.95 highlowest of 39, 19 tied175

Share of heat ceiling: listed flow ÷ the flow the gas input could heat through 67 °F at 100% efficiency; test tolerances allow a little over 100%.

Midea MGWH150IXNN: max flow against gas input

Midea MGWH150IXNNOther gas tankless sets

Max flow at a 67 °F rise, gal/min

Midea MGWH150IXNN: max flow against gas input3.54.04.55.05.56.06.5120130140150160170180190200Gas input, thousand Btu/hA. O. Smith ACT-199O-N 1A. O. Smith ATHR-160M 1A. O. Smith ATHR-180M 1A. O. Smith ATHR-199M 1A. O. Smith ATI-340H 1A. O. Smith ATM-140M-N 1A. O. Smith ATM-199M-N 1A. O. Smith ATO-240H 1Bosch T9800 SE 160Bosch T9800 SE 199Bradford White RTGR150N1Kepler JSG48-29PCH/180KKepler JSG52-32PCH/199KNPMidea JSG40-24PCH-LPMidea JSG48-29PCH-LPMidea JSG52-32PCH-LPNavien NPE-180A2Navien NPE-180S2Navien NPE-210A2Navien NPE-210S2Navien NPE-240A2Noritz EZ111DV (GQ-C3260WX-FF US)Noritz EZ111DV (GQ-C3261WX-FF US)Noritz EZ71DV (GQ-C2661WX-FF US)Noritz EZ98DV (GQ-C2860WX-FF US)Noritz EZ98DV (GQ-C2861WX-FF US)Noritz NRCR92DV (GQ-C2660WXQ-FF US)Noritz NRCR92DV (GQ-C2661WXQ-FF US)Rheem ECOHS160INRheem ECOHS180INRheem ECOHS200INRinnai (CX160I) REU-NB2530FFC-USRinnai (CX199I) REU-NB3237FFC-USRinnai (RX130I) REU-NB2024FF-USVesta VRP-PLUS-150Vesta VRS PLUS-199Vesta VTP-150Vesta VTP-199Vesta VTS-150Midea MGWH150IXNN
Midea MGWH150IXNN: max flow against gas input3.54.04.55.05.56.06.5120140160180200Gas input, thousand Btu/hA. O. Smith ACT-199O-N 1A. O. Smith ATHR-160M 1A. O. Smith ATHR-180M 1A. O. Smith ATHR-199M 1A. O. Smith ATI-340H 1A. O. Smith ATM-140M-N 1A. O. Smith ATM-199M-N 1A. O. Smith ATO-240H 1Bosch T9800 SE 160Bosch T9800 SE 199Bradford White RTGR150N1Kepler JSG48-29PCH/180KKepler JSG52-32PCH/199KNPMidea JSG40-24PCH-LPMidea JSG48-29PCH-LPMidea JSG52-32PCH-LPNavien NPE-180A2Navien NPE-180S2Navien NPE-210A2Navien NPE-210S2Navien NPE-240A2Noritz EZ111DV (GQ-C3260WX-FF US)Noritz EZ111DV (GQ-C3261WX-FF US)Noritz EZ71DV (GQ-C2661WX-FF US)Noritz EZ98DV (GQ-C2860WX-FF US)Noritz EZ98DV (GQ-C2861WX-FF US)Noritz NRCR92DV (GQ-C2660WXQ-FF US)Noritz NRCR92DV (GQ-C2661WXQ-FF US)Rheem ECOHS160INRheem ECOHS180INRheem ECOHS200INRinnai (CX160I) REU-NB2530FFC-USRinnai (CX199I) REU-NB3237FFC-USRinnai (RX130I) REU-NB2024FF-USVesta VRP-PLUS-150Vesta VRS PLUS-199Vesta VTP-150Vesta VTP-199Vesta VTS-150Midea MGWH150IXNN
Filled: the Midea MGWH150IXNN; open circles: the other 39 gas tankless sets. Dashed line: the flow that the full gas input could heat through a 67 °F rise.

Where this set stands

MeasureValueMedian of the groupPlacingCompared with
Max flow at a 67 °F rise4.4 gal/min5.2 gal/minfifth lowest of 40, three tied40 gas tankless sets
UEF0.950.96lowest of 39, 19 tied39 high-draw gas tankless sets
Rated gas use175 therms/yr176 therms/yrseventh lowest of 39, six tied39 high-draw gas tankless sets
Gas input150,000 Btu/h180,000 Btu/hthird lowest of 40, eight tied40 gas tankless sets

Model numbers

The set covers 4 model numbers, all certified 2025-12-19.

Model numberBrandVentFuelMin flowCertified
MGWH150IXNNMideaPower Direct Ventnatural gas0.60 gal/min2025-12-19
MGWH150IXNPMideaPower Direct Ventnatural gas0.60 gal/min2025-12-19
MGWH150IXPNMideaPower Direct Ventpropane0.60 gal/min2025-12-19
MGWH150IXPPMideaPower Direct Ventpropane0.60 gal/min2025-12-19

Nearest certified alternatives

Rating setMax flowUEFGas input
Midea JSG40-24PCH-LP±0.0 gal/min±0.00same Btu/h
Navien NPE-180A2−0.1 gal/min±0.00same Btu/h
Bosch T9800 SE 160+0.2 gal/min±0.00+10,000 Btu/h
A. O. Smith ATO-240H 1+0.3 gal/min±0.00+10,000 Btu/h

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