waterheaterspecs

Heat pump · 240 V integrated

Vaughn Thermal MExxHPT

The Vaughn Thermal MExxHPT line holds four certified rating sets of 240 V integrated heat-pump water heaters, 16 model numbers sold under three brand names, listed by Vaughn Thermal. Rated volume runs from 47 to 109 gal, and the first-hour rating runs from 58 to 105 gal. UEFs compare only within a draw pattern; the two high-draw sets rate UEF from 3.38 to 3.48. Vaughn Thermal ME120HPT lists 1,467 kWh/yr, the fourth highest of the 58 high-draw heat-pump sets. Vaughn Thermal ME120HPT lists UEF 3.38, the fourth lowest of the 58 high-draw heat-pump sets.

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

Size by size

Certified values of Vaughn Thermal MExxHPT
Rating setRated volume, galFirst hour, galPer rated galUEFUEF rankkWh/yr
Vaughn Thermal ME50HPT4 model numbers47581.233.46 medium12th lowest of 38938
Vaughn Thermal ME65HPT4 model numbers57701.233.34 mediumeighth lowest of 38974
Vaughn Thermal ME80HPT4 model numbers74861.163.48 high11th lowest of 581,424
Vaughn Thermal ME120HPT4 model numbers1091050.963.38 highfourth lowest of 581,467

UEF ranks compare sets of the same draw pattern only.

Vaughn Thermal MExxHPT: first-hour rating against rated volume

Vaughn Thermal MExxHPTOther heat-pump sets

First-hour rating, gal

Vaughn Thermal MExxHPT: first-hour rating against rated volume40608010012014030405060708090100110120Rated volume, gal1×1.5×A. O. Smith CAHP-40 2A. O. Smith CAHP-50 2A. O. Smith CAHP-66 2A. O. Smith CAHP-80 2A. O. Smith FPTU-50 1A. O. Smith FPTU-66 1A. O. Smith FPTU-80 1A. O. Smith HP1050H45DV 1A. O. Smith HP1080H45DV 1A. O. Smith HPACO-45 1+AXST-50LBTTP 1A. O. Smith HPACO-45 1+AXST-50T 1A. O. Smith HPACO-45 1+AXST-66 1A. O. Smith HPACO-45 1+AXST-80 1A. O. Smith HPS10-50H45DV 2A. O. Smith HPS10-66H45DV 2A. O. Smith HPS10-80H45DV 2A. O. Smith HPTU-66CTA 1A. O. Smith HPTV-50 2A. O. Smith HPTV-66 2A. O. Smith HPTV-80 2American Standard ASHPWH-40American Standard ASHPWH-50American Standard ASHPWH-65American Standard ASHPWH-80Arctic Arctic-HP-Hot Water-KA06-50Arctic Arctic-HP-Hot Water-KA06-80Ariston ARIHPWH-40-TAriston ARIHPWH-50-TAriston ARIHPWH-65-TAriston ARIHPWH-80-TBradford White RE2H50S-Bradford White RE2H65T-Bradford White RE2H80T-Bradford White RE2HP50-1NCTTBradford White RE2HP65-1NCTTBradford White RE2HP80-1NCTTCarnot Labs N51Eco-Logical OMNI-50HP1-1AEco-Logical OMNI-50HP2-1AEco-Logical OMNI-80HP2-1AFriedrich PROH40 T2 FD310BMFriedrich PROH50 T2 FD310BMFriedrich PROH65 T2 FD310BMFriedrich PROH80 T2 FD310BMGE Profile PF40S10FPY01GE Profile PF50S10FPY01GE Profile PF65S10FPY01GE Profile PF80S10FPY01GE Profile PH40S10BPY01GE Profile PH50S10BNY01GE Profile PH50S10BPY01GE Profile PH65S10BNY01GE Profile PH65S10BPY01GE Profile PH80S10BNY01GE Profile PH80S10BPY01Giant GTHPCO-45 1+GTXST-50S 1Gree GRS-3.0Pd/TD50GANhA-DGree GRS-3.0Pd/TD70GANhA-DLG APHWC501DLG APHWC502DLG APHWC801DLG APHWC802DMidea CAN3-RSJ-15/190RDVN3-L3Midea CAN3-RSJ-15/190RDVN3-L4Midea CAN3-RSJ-15/250RDVN3-L3Midea CAN3-RSJ-15/250RDVN3-L4Midea CAN3-RSJ-15/300RDVN3-L3Midea CAN3-RSJ-15/300RDVN3-L4Navien NWP500S050AUMBNavien NWP500S065AUMBNavien NWP500S080AUMBReclaim Energy MP120F-RCReclaim Energy MP80F-RCRheem PROPH40 T0 RH120-MRheem PROPH40 T2 RH375-15Rheem PROPH40 T2 RH375-30Rheem PROPH50 T0 RH120Rheem PROPH50 T0 RH120-MRheem PROPH50 T2 RH375-15Rheem PROPH50 T2 RH375-30Rheem PROPH65 T0 RH120-MRheem PROPH65 T2 RH375-15Rheem PROPH65 T2 RH375-30Rheem PROPH80 T0 RH120-MRheem PROPH80 T2 RH375-15Rheem PROPH80 T2 RH375-30Rinnai REHP50Rinnai REHP80SanCO2 GS5-45HPC HP + ECO-119GLBKSanCO2 GS5-45HPC HP + ECO-43SSAQBSanCO2 GS5-45HPC HP + ECO-83SSAQBSmart Solar SSG2-ES 120Smart Solar SSG2-ES 65Smart Solar SSG2-ES 80Vaughn Thermal MP120FHPTVaughn Thermal MP55FHPTVaughn Thermal MP80FHPTVaughn Thermal ME50HPTVaughn Thermal ME65HPTVaughn Thermal ME80HPTVaughn Thermal ME120HPT
Vaughn Thermal MExxHPT: first-hour rating against rated volume406080100120140306090120Rated volume, galA. O. Smith CAHP-40 2A. O. Smith CAHP-50 2A. O. Smith CAHP-66 2A. O. Smith CAHP-80 2A. O. Smith FPTU-50 1A. O. Smith FPTU-66 1A. O. Smith FPTU-80 1A. O. Smith HP1050H45DV 1A. O. Smith HP1080H45DV 1A. O. Smith HPACO-45 1+AXST-50LBTTP 1A. O. Smith HPACO-45 1+AXST-50T 1A. O. Smith HPACO-45 1+AXST-66 1A. O. Smith HPACO-45 1+AXST-80 1A. O. Smith HPS10-50H45DV 2A. O. Smith HPS10-66H45DV 2A. O. Smith HPS10-80H45DV 2A. O. Smith HPTU-66CTA 1A. O. Smith HPTV-50 2A. O. Smith HPTV-66 2A. O. Smith HPTV-80 2American Standard ASHPWH-40American Standard ASHPWH-50American Standard ASHPWH-65American Standard ASHPWH-80Arctic Arctic-HP-Hot Water-KA06-50Arctic Arctic-HP-Hot Water-KA06-80Ariston ARIHPWH-40-TAriston ARIHPWH-50-TAriston ARIHPWH-65-TAriston ARIHPWH-80-TBradford White RE2H50S-Bradford White RE2H65T-Bradford White RE2H80T-Bradford White RE2HP50-1NCTTBradford White RE2HP65-1NCTTBradford White RE2HP80-1NCTTCarnot Labs N51Eco-Logical OMNI-50HP1-1AEco-Logical OMNI-50HP2-1AEco-Logical OMNI-80HP2-1AFriedrich PROH40 T2 FD310BMFriedrich PROH50 T2 FD310BMFriedrich PROH65 T2 FD310BMFriedrich PROH80 T2 FD310BMGE Profile PF40S10FPY01GE Profile PF50S10FPY01GE Profile PF65S10FPY01GE Profile PF80S10FPY01GE Profile PH40S10BPY01GE Profile PH50S10BNY01GE Profile PH50S10BPY01GE Profile PH65S10BNY01GE Profile PH65S10BPY01GE Profile PH80S10BNY01GE Profile PH80S10BPY01Giant GTHPCO-45 1+GTXST-50S 1Gree GRS-3.0Pd/TD50GANhA-DGree GRS-3.0Pd/TD70GANhA-DLG APHWC501DLG APHWC502DLG APHWC801DLG APHWC802DMidea CAN3-RSJ-15/190RDVN3-L3Midea CAN3-RSJ-15/190RDVN3-L4Midea CAN3-RSJ-15/250RDVN3-L3Midea CAN3-RSJ-15/250RDVN3-L4Midea CAN3-RSJ-15/300RDVN3-L3Midea CAN3-RSJ-15/300RDVN3-L4Navien NWP500S050AUMBNavien NWP500S065AUMBNavien NWP500S080AUMBReclaim Energy MP120F-RCReclaim Energy MP80F-RCRheem PROPH40 T0 RH120-MRheem PROPH40 T2 RH375-15Rheem PROPH40 T2 RH375-30Rheem PROPH50 T0 RH120Rheem PROPH50 T0 RH120-MRheem PROPH50 T2 RH375-15Rheem PROPH50 T2 RH375-30Rheem PROPH65 T0 RH120-MRheem PROPH65 T2 RH375-15Rheem PROPH65 T2 RH375-30Rheem PROPH80 T0 RH120-MRheem PROPH80 T2 RH375-15Rheem PROPH80 T2 RH375-30Rinnai REHP50Rinnai REHP80SanCO2 GS5-45HPC HP + ECO-119GLBKSanCO2 GS5-45HPC HP + ECO-43SSAQBSanCO2 GS5-45HPC HP + ECO-83SSAQBSmart Solar SSG2-ES 120Smart Solar SSG2-ES 65Smart Solar SSG2-ES 80Vaughn Thermal MP120FHPTVaughn Thermal MP55FHPTVaughn Thermal MP80FHPTVaughn Thermal ME50HPTVaughn Thermal ME65HPTVaughn Thermal ME80HPTVaughn Thermal ME120HPT
Filled: the four sets of Vaughn Thermal MExxHPT; open circles: the other 97 heat-pump sets. Dashed lines mark 1× and 1.5× the rated volume; the highest ratio in the line is 1.23×, on Vaughn Thermal ME50HPT.

Across the sizes

From Vaughn Thermal ME50HPT to Vaughn Thermal ME120HPT, rated volume grows by 62 gal and the first-hour rating by 47 gal: 0.76 gal of first-hour output for each added rated gallon.

The sizes test at different draw patterns (two high and two medium), so UEF and annual energy compare only between sizes that share a pattern (why).

Strongest placings, size by size

MeasureValueMedian of the groupPlacingCompared with
Rated electricity useVaughn Thermal ME50HPT938 kWh/yr894 kWh/yr11th highest of 3838 medium-draw heat-pump sets
UEFVaughn Thermal ME50HPT3.463.5612th lowest of 3838 medium-draw heat-pump sets
Rated electricity useVaughn Thermal ME65HPT974 kWh/yr894 kWh/yrseventh highest of 3838 medium-draw heat-pump sets
UEFVaughn Thermal ME65HPT3.343.56eighth lowest of 3838 medium-draw heat-pump sets
Rated electricity useVaughn Thermal ME80HPT1,424 kWh/yr1,268 kWh/yrsixth highest of 5858 high-draw heat-pump sets
UEFVaughn Thermal ME80HPT3.483.8811th lowest of 5858 high-draw heat-pump sets
UEFVaughn Thermal ME120HPT3.383.88fourth lowest of 5858 high-draw heat-pump sets
Rated electricity useVaughn Thermal ME120HPT1,467 kWh/yr1,268 kWh/yrfourth highest of 5858 high-draw heat-pump sets

Model numbers

The line covers 16 model numbers under three brand names, first certified 2023-08-30 and most recently 2024-11-12.

Model numberBrandRating setHeight × diameterElectricalRefrigerantConnectedCertified
ME50HPTHubbellME50HPT58.3 × 28 in240 V / 23 AR-134ano2023-12-13
NHP50NoritzME50HPT58.3 × 28 in240 V / 23 AR-134ano2024-11-12
ME50HPTVaughn ThermalME50HPT58.3 × 28 in240 V / 23 AR-134ano2023-08-30
ME50HPT-CNVaughn ThermalME50HPT58.3 × 28 in240 V / 23 AR-134ano2024-08-13
ME65HPTHubbellME65HPT63.8 × 28 in240 V / 23 AR-134ano2023-12-13
NHP65NoritzME65HPT63.8 × 28 in240 V / 23 AR-134ano2024-11-12
ME65HPTVaughn ThermalME65HPT63.8 × 28 in240 V / 23 AR-134ano2023-08-30
ME65HPT-CNVaughn ThermalME65HPT63.8 × 28 in240 V / 23 AR-134ano2024-08-13
ME80HPTHubbellME80HPT74 × 28 in240 V / 23 AR-134ano2023-12-13
NHP80NoritzME80HPT74 × 28 in240 V / 23 AR-134ano2024-11-12
ME80HPTVaughn ThermalME80HPT74 × 28 in240 V / 23 AR-134ano2023-09-13
ME80HPT-CNVaughn ThermalME80HPT74 × 28 in240 V / 23 AR-134ano2024-08-13
ME120HPTHubbellME120HPT84.5 × 30 in240 V / 23 AR-134ano2023-12-13
NHP120NoritzME120HPT84.5 × 30 in240 V / 23 AR-134ano2024-11-12
ME120HPTVaughn ThermalME120HPT84.5 × 30 in240 V / 23 AR-134ano2023-10-03
ME120HPT-CNVaughn ThermalME120HPT84.5 × 30 in240 V / 23 AR-134ano2024-08-13

Nearest certified alternatives

Rating setFirst hourUEFRated volume
Friedrich PROH40 T2 FD310BMcompared with Vaughn Thermal ME50HPT+2 gal+0.04−11 gal
Rheem PROPH65 T2 RH375-15compared with Vaughn Thermal ME50HPT−4 gal+0.09+12 gal
A. O. Smith CAHP-40 2compared with Vaughn Thermal ME50HPT−3 gal+0.14−11 gal
Bradford White RE2H50S-compared with Vaughn Thermal ME50HPT+7 gal−0.02−2 gal
A. O. Smith FPTU-50 1compared with Vaughn Thermal ME65HPT−4 gal+0.01−11 gal

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