waterheaterspecs

Navien

Navien, Inc. is the ENERGY STAR partner of record for 9 certified model numbers in 9 rating sets (6 gas tankless, 3 heat-pump), under a single brand name. Across the partner’s 6 gas tankless sets, max flow at a 67 °F rise runs from 4.3 gal/min to 5.8 gal/min and the high-draw UEF from 0.95 to 0.96.

Certified models as of October 27, 2026 · Open these sets in the Heater finder

Max flow against gas input, Navien among all gas tankless sets

Listed hereOther gas tankless sets

Max flow at a 67 °F rise, gal/min

Max flow against gas input, Navien among all gas tankless sets3.54.04.55.05.56.06.5120130140150160170180190200Gas 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-LPMidea MGWH150IXNNNoritz 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 ECOHS180INRinnai (CX160I) REU-NB2530FFC-USRinnai (CX199I) REU-NB3237FFC-USRinnai (RX130I) REU-NB2024FF-USVesta VRP-PLUS-150Vesta VRS PLUS-199Vesta VTP-150Vesta VTP-199Vesta VTS-150Navien NPE-180A2Navien NPE-180S2Navien NPE-210A2Navien NPE-210S2Navien NPE-240A2Rheem ECOHS200IN
Max flow against gas input, Navien among all gas tankless sets3.54.04.55.05.56.06.5120140160180200Gas 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-LPMidea MGWH150IXNNNoritz 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 ECOHS180INRinnai (CX160I) REU-NB2530FFC-USRinnai (CX199I) REU-NB3237FFC-USRinnai (RX130I) REU-NB2024FF-USVesta VRP-PLUS-150Vesta VRS PLUS-199Vesta VTP-150Vesta VTP-199Vesta VTS-150Navien NPE-180A2Navien NPE-180S2Navien NPE-210A2Navien NPE-210S2Navien NPE-240A2Rheem ECOHS200IN
Filled: the six rating sets listed by Navien, sized by model numbers; open: 34 sets of the same type from other partners.

Rating sets by type

Heat pump, 3 rating sets

Heat-pump rating sets by draw pattern
Rating setRated volumeFirst-hour ratingUEFEnergyRefrigerantLow cut-off
High draw pattern2 of the 58 high-draw heat-pump sets
Navien NWP500S080AUMB
Show 1 model number
  • Navien NWP500S080AUMB
74 gal85 gal4.051,265 kWh/yrR-134a41 °F
Navien NWP500S065AUMB
Show 1 model number
  • Navien NWP500S065AUMB
61 gal80 gal4.031,245 kWh/yrR-134a41 °F
Medium draw pattern1 of the 38 medium-draw heat-pump sets
Navien NWP500S050AUMB
Show 1 model number
  • Navien NWP500S050AUMB
44 gal65 gal3.85840 kWh/yrR-134a41 °F

Gas tankless, 6 rating sets

Gas tankless rating sets by gas input
Rating setMax flow, 67 °F riseGas inputUEF, drawGas useFuel
199,000 Btu/h2 sets
Navien NPE-240S2
Show 1 model number
  • Navien NPE-240S2
  • 34 more model numbers with these ratings are listed by another partner
5.8 gal/min199,000 Btu/h0.96 high176 therms/yrnatural gas or propane
Navien NPE-240A2
Show 1 model number
  • Navien NPE-240A2
5.6 gal/min199,000 Btu/h0.95 high178 therms/yrnatural gas or propane
170,000 to 189,000 Btu/h2 sets
Navien NPE-210S2
Show 1 model number
  • Navien NPE-210S2
5.3 gal/min180,000 Btu/h0.96 high176 therms/yrnatural gas or propane
Navien NPE-210A2
Show 1 model number
  • Navien NPE-210A2
5.0 gal/min180,000 Btu/h0.95 high178 therms/yrnatural gas or propane
Under 160,000 Btu/h2 sets
Navien NPE-180S2
Show 1 model number
  • Navien NPE-180S2
4.4 gal/min150,000 Btu/h0.96 high176 therms/yrnatural gas or propane
Navien NPE-180A2
Show 1 model number
  • Navien NPE-180A2
  • 1 more model number with these ratings is listed by another partner
4.3 gal/min150,000 Btu/h0.95 high178 therms/yrnatural gas or propane

Fuel listing

Counted by model number, 6 in all.

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