Home / Model lines / Rinnai REHPxx Heat pump · 240 V integrated
Rinnai REHPxx The Rinnai REHPxx line holds two certified rating sets of 240 V integrated heat-pump water heaters, 6 model numbers sold as Rinnai, listed by Rinnai America. Rated volume runs from 46 to 75 gal, and the first-hour rating runs from 73 to 91 gal. UEFs compare only within a draw pattern; the one high-draw sets rate UEF 4.00. Rinnai REHP80, the set with the most model numbers, rates 0.12 above the median UEF of the 58 high-draw heat-pump sets (3.88).
Certified as of October 27, 2026 · EPA ENERGY STAR data, public domain · Compare in the Heater finder
Size by size Certified values of Rinnai REHPxx Rating set Rated volume, gal First hour, gal Per rated gal UEF UEF rank kWh/yr Rinnai REHP50 3 model numbers 46 73 1.59 3.75 medium tenth highest of 38, five tied 844 Rinnai REHP80 3 model numbers 75 91 1.21 4.00 high 21st highest of 58, five tied 1,225
UEF ranks compare sets of the same draw pattern only.
Rinnai REHPxx: first-hour rating against rated volume
First-hour rating, gal
Rinnai REHPxx: first-hour rating against rated volume 40 60 80 100 120 140 30 40 50 60 70 80 90 100 110 120 Rated volume, gal 1× 1.5× A. O. Smith CAHP-40 2 A. O. Smith CAHP-50 2 A. O. Smith CAHP-66 2 A. O. Smith CAHP-80 2 A. O. Smith FPTU-50 1 A. O. Smith FPTU-66 1 A. O. Smith FPTU-80 1 A. O. Smith HP1050H45DV 1 A. O. Smith HP1080H45DV 1 A. O. Smith HPACO-45 1+AXST-50LBTTP 1 A. O. Smith HPACO-45 1+AXST-50T 1 A. O. Smith HPACO-45 1+AXST-66 1 A. O. Smith HPACO-45 1+AXST-80 1 A. O. Smith HPS10-50H45DV 2 A. O. Smith HPS10-66H45DV 2 A. O. Smith HPS10-80H45DV 2 A. O. Smith HPTU-66CTA 1 A. O. Smith HPTV-50 2 A. O. Smith HPTV-66 2 A. O. Smith HPTV-80 2 American Standard ASHPWH-40 American Standard ASHPWH-50 American Standard ASHPWH-65 American Standard ASHPWH-80 Arctic Arctic-HP-Hot Water-KA06-50 Arctic Arctic-HP-Hot Water-KA06-80 Ariston ARIHPWH-40-T Ariston ARIHPWH-50-T Ariston ARIHPWH-65-T Ariston ARIHPWH-80-T Bradford White RE2H50S- Bradford White RE2H65T- Bradford White RE2H80T- Bradford White RE2HP50-1NCTT Bradford White RE2HP65-1NCTT Bradford White RE2HP80-1NCTT Carnot Labs N51 Eco-Logical OMNI-50HP1-1A Eco-Logical OMNI-50HP2-1A Eco-Logical OMNI-80HP2-1A Friedrich PROH40 T2 FD310BM Friedrich PROH50 T2 FD310BM Friedrich PROH65 T2 FD310BM Friedrich PROH80 T2 FD310BM GE Profile PF40S10FPY01 GE Profile PF50S10FPY01 GE Profile PF65S10FPY01 GE Profile PF80S10FPY01 GE Profile PH40S10BPY01 GE Profile PH50S10BNY01 GE Profile PH50S10BPY01 GE Profile PH65S10BNY01 GE Profile PH65S10BPY01 GE Profile PH80S10BNY01 GE Profile PH80S10BPY01 Giant GTHPCO-45 1+GTXST-50S 1 Gree GRS-3.0Pd/TD50GANhA-D Gree GRS-3.0Pd/TD70GANhA-D LG APHWC501D LG APHWC502D LG APHWC801D LG APHWC802D Midea CAN3-RSJ-15/190RDVN3-L3 Midea CAN3-RSJ-15/190RDVN3-L4 Midea CAN3-RSJ-15/250RDVN3-L3 Midea CAN3-RSJ-15/250RDVN3-L4 Midea CAN3-RSJ-15/300RDVN3-L3 Midea CAN3-RSJ-15/300RDVN3-L4 Navien NWP500S050AUMB Navien NWP500S065AUMB Navien NWP500S080AUMB Reclaim Energy MP120F-RC Reclaim Energy MP80F-RC Rheem PROPH40 T0 RH120-M Rheem PROPH40 T2 RH375-15 Rheem PROPH40 T2 RH375-30 Rheem PROPH50 T0 RH120 Rheem PROPH50 T0 RH120-M Rheem PROPH50 T2 RH375-15 Rheem PROPH50 T2 RH375-30 Rheem PROPH65 T0 RH120-M Rheem PROPH65 T2 RH375-15 Rheem PROPH65 T2 RH375-30 Rheem PROPH80 T0 RH120-M Rheem PROPH80 T2 RH375-15 Rheem PROPH80 T2 RH375-30 SanCO2 GS5-45HPC HP + ECO-119GLBK SanCO2 GS5-45HPC HP + ECO-43SSAQB SanCO2 GS5-45HPC HP + ECO-83SSAQB Smart Solar SSG2-ES 120 Smart Solar SSG2-ES 65 Smart Solar SSG2-ES 80 Vaughn Thermal ME120HPT Vaughn Thermal ME50HPT Vaughn Thermal ME65HPT Vaughn Thermal ME80HPT Vaughn Thermal MP120FHPT Vaughn Thermal MP55FHPT Vaughn Thermal MP80FHPT Rinnai REHP50 Rinnai REHP80
Rinnai REHPxx: first-hour rating against rated volume 40 60 80 100 120 140 30 60 90 120 Rated volume, gal A. O. Smith CAHP-40 2 A. O. Smith CAHP-50 2 A. O. Smith CAHP-66 2 A. O. Smith CAHP-80 2 A. O. Smith FPTU-50 1 A. O. Smith FPTU-66 1 A. O. Smith FPTU-80 1 A. O. Smith HP1050H45DV 1 A. O. Smith HP1080H45DV 1 A. O. Smith HPACO-45 1+AXST-50LBTTP 1 A. O. Smith HPACO-45 1+AXST-50T 1 A. O. Smith HPACO-45 1+AXST-66 1 A. O. Smith HPACO-45 1+AXST-80 1 A. O. Smith HPS10-50H45DV 2 A. O. Smith HPS10-66H45DV 2 A. O. Smith HPS10-80H45DV 2 A. O. Smith HPTU-66CTA 1 A. O. Smith HPTV-50 2 A. O. Smith HPTV-66 2 A. O. Smith HPTV-80 2 American Standard ASHPWH-40 American Standard ASHPWH-50 American Standard ASHPWH-65 American Standard ASHPWH-80 Arctic Arctic-HP-Hot Water-KA06-50 Arctic Arctic-HP-Hot Water-KA06-80 Ariston ARIHPWH-40-T Ariston ARIHPWH-50-T Ariston ARIHPWH-65-T Ariston ARIHPWH-80-T Bradford White RE2H50S- Bradford White RE2H65T- Bradford White RE2H80T- Bradford White RE2HP50-1NCTT Bradford White RE2HP65-1NCTT Bradford White RE2HP80-1NCTT Carnot Labs N51 Eco-Logical OMNI-50HP1-1A Eco-Logical OMNI-50HP2-1A Eco-Logical OMNI-80HP2-1A Friedrich PROH40 T2 FD310BM Friedrich PROH50 T2 FD310BM Friedrich PROH65 T2 FD310BM Friedrich PROH80 T2 FD310BM GE Profile PF40S10FPY01 GE Profile PF50S10FPY01 GE Profile PF65S10FPY01 GE Profile PF80S10FPY01 GE Profile PH40S10BPY01 GE Profile PH50S10BNY01 GE Profile PH50S10BPY01 GE Profile PH65S10BNY01 GE Profile PH65S10BPY01 GE Profile PH80S10BNY01 GE Profile PH80S10BPY01 Giant GTHPCO-45 1+GTXST-50S 1 Gree GRS-3.0Pd/TD50GANhA-D Gree GRS-3.0Pd/TD70GANhA-D LG APHWC501D LG APHWC502D LG APHWC801D LG APHWC802D Midea CAN3-RSJ-15/190RDVN3-L3 Midea CAN3-RSJ-15/190RDVN3-L4 Midea CAN3-RSJ-15/250RDVN3-L3 Midea CAN3-RSJ-15/250RDVN3-L4 Midea CAN3-RSJ-15/300RDVN3-L3 Midea CAN3-RSJ-15/300RDVN3-L4 Navien NWP500S050AUMB Navien NWP500S065AUMB Navien NWP500S080AUMB Reclaim Energy MP120F-RC Reclaim Energy MP80F-RC Rheem PROPH40 T0 RH120-M Rheem PROPH40 T2 RH375-15 Rheem PROPH40 T2 RH375-30 Rheem PROPH50 T0 RH120 Rheem PROPH50 T0 RH120-M Rheem PROPH50 T2 RH375-15 Rheem PROPH50 T2 RH375-30 Rheem PROPH65 T0 RH120-M Rheem PROPH65 T2 RH375-15 Rheem PROPH65 T2 RH375-30 Rheem PROPH80 T0 RH120-M Rheem PROPH80 T2 RH375-15 Rheem PROPH80 T2 RH375-30 SanCO2 GS5-45HPC HP + ECO-119GLBK SanCO2 GS5-45HPC HP + ECO-43SSAQB SanCO2 GS5-45HPC HP + ECO-83SSAQB Smart Solar SSG2-ES 120 Smart Solar SSG2-ES 65 Smart Solar SSG2-ES 80 Vaughn Thermal ME120HPT Vaughn Thermal ME50HPT Vaughn Thermal ME65HPT Vaughn Thermal ME80HPT Vaughn Thermal MP120FHPT Vaughn Thermal MP55FHPT Vaughn Thermal MP80FHPT Rinnai REHP50 Rinnai REHP80
Filled: the two sets of Rinnai REHPxx; open circles: the other 99 heat-pump sets. Dashed lines mark 1× and 1.5× the rated volume; the highest ratio in the line is 1.59×, on Rinnai REHP50. Across the sizes From Rinnai REHP50 to Rinnai REHP80, rated volume grows by 29 gal and the first-hour rating by 18 gal: 0.62 gal of first-hour output for each added rated gallon.
The sizes test at different draw patterns (one high and one medium), so UEF and annual energy compare only between sizes that share a pattern (why ).
Strongest placings, size by size Measure Value Median of the group Placing Compared with Rated electricity useRinnai REHP50 844 kWh/yr 894 kWh/yr seventh lowest of 38 38 medium-draw heat-pump sets First-hour output per rated gallonRinnai REHP50 1.59 1.25 eighth highest of 101 101 heat-pump sets Compressor cut-offRinnai REHP80 37.4 °F 36.3 °F 11th highest of 90, eight tied 90 heat-pump sets that report one First-hour ratingRinnai REHP80 91 gal 77 gal 16th highest of 101, four tied 101 heat-pump sets
Model numbers The line covers 6 model numbers, all certified 2026-03-24.
Model number Brand Rating set Height × diameter Electrical Refrigerant Connected Certified REHP50 Rinnai REHP50 66.4 × 21.7 in 240 V / 24 A R-134a no 2026-03-24 REHP50BM Rinnai REHP50 66.4 × 21.7 in 240 V / 24 A R-134a no 2026-03-24 REHP50C Rinnai REHP50 66.4 × 21.7 in 240 V / 24 A R-134a no 2026-03-24 REHP80 Rinnai REHP80 74.2 × 25.7 in 240 V / 24 A R-134a no 2026-03-24 REHP80BM Rinnai REHP80 74.2 × 25.7 in 240 V / 24 A R-134a no 2026-03-24 REHP80C Rinnai REHP80 74.2 × 25.7 in 240 V / 24 A R-134a no 2026-03-24
Nearest certified alternatives