Menu

Rheem Water heaters: energy use and running cost

The average model uses 1,080 kWh a year, which costs $227 a year at 21.0¢/kWh.

Most efficient models

ModelkWh/yearCost/year
Rheem CPROPH40 T2 RH400-15643$135
Rheem ECEPH40 T2 RH400-15643$135
Rheem PROPH40 T2 RH375-15643$135
Rheem PROPH40 T2 RH400-15643$135
Rheem XE40T10H22U0643$135
Rheem XE40T10H22U1643$135
Rheem PROPH40 T0 RH120-M780$164
Rheem PROPH40 T0 RH120-MSO780$164
Rheem XE40T10HM00U0780$164
Rheem XE40T10HMS00U0780$164
Rheem CPROPH50 T2 RH375-SO846$178
Rheem CPROPH50 T2 RH400-15846$178
Rheem CPROPH50 T2 RH400-30846$178
Rheem CPROPH50 T2 RH400-SO846$178
Rheem CXE50T10H22U1846$178
Rheem CXE50T10H45U1846$178
Rheem CXE50T10HS45U1846$178
Rheem ECEPH50 T2 RH400-15846$178
Rheem ECEPH50 T2 RH400-30846$178
Rheem ECEPH50 T2 RH400-SO846$178
Rheem PROPH50 T2 RH375-15846$178
Rheem PROPH50 T2 RH375-30846$178
Rheem PROPH50 T2 RH400-15846$178
Rheem PROPH50 T2 RH400-30846$178
Rheem PROPH50 T2 RH400-SO846$178
Rheem PROPH50 T2 RH400-Z30846$178
Rheem XE50T10H22U0846$178
Rheem XE50T10H22U1846$178
Rheem XE50T10H45U1846$178
Rheem XE50T10HS45U0846$178
Rheem XE50T10HS45U1846$178
Rheem XE50T10HZ45U1846$178
Rheem CPROPH40 T2 RH400-30859$181
Rheem CPROPH40 T2 RH400-SO859$181
Rheem CXE40T10H45U1859$181
Rheem CXE40T10HS45U1859$181
Rheem CXE40T10HS45UO859$181
Rheem ECEPH40 T2 RH400-30859$181
Rheem ECEPH40 T2 RH400-SO859$181
Rheem PROPH40 T2 RH375-30859$181
Rheem PROPH40 T2 RH375-SO859$181
Rheem PROPH40 T2 RH400-30859$181
Rheem PROPH40 T2 RH400-SO859$181
Rheem PROPH40 T2 RH400-Z30859$181
Rheem XE40T10H45U0859$181
Rheem XE40T10H45U1859$181
Rheem XE40T10HS45U0859$181
Rheem XE40T10HS45U1859$181
Rheem XE40T10HZ45U1859$181
Rheem CPROPH80 T2 RH375-15871$183
Rheem CPROPH80 T2 RH400-15871$183
Rheem CXE80T10H22U1871$183
Rheem ECEPH80 T2 RH400-15871$183
Rheem PROPH80 T2 RH375-15871$183
Rheem PROPH80 T2 RH400-15871$183
Rheem XE80T10H22U0871$183
Rheem XE80T10H22U1871$183
Rheem CPROPH40 T2 RH350BM879$185
Rheem ECE H40 T2 RH310BM879$185
Rheem ECEPH40 T2 RH350BM879$185
Rheem PRO H40 T2 RH310BM879$185
Rheem PRO H40 T2 RH310UM879$185
Rheem PROUH40 T2 RH350BM879$185
Rheem PROUH40 T2 RH350UM879$185
Rheem CPROPH65 T2 RH375-15887$186
Rheem CPROPH65 T2 RH400-15887$186
Rheem CXE65T10H22U1887$186
Rheem ECEPH65 T2 RH400-15887$186
Rheem PROPH65 T2 RH375-15887$186
Rheem PROPH65 T2 RH400-15887$186
Rheem XE65T10H22U0887$186
Rheem CPRO H65 T2 RH310BM900$189
Rheem CPROPH65 T2 RH350BM900$189
Rheem ECEPH65 T2 RH350BM900$189
Rheem PRO H65 T2 RH310BM900$189
Rheem PRO H65 T2 RH310UM900$189
Rheem PROUH65 T2 RH350BM900$189
Rheem PROUH65 T2 RH350UM900$189
Rheem CPROPH50 T2 RH350BM915$192
Rheem ECE H50 T2 RH310BM915$192
Rheem ECEPH50 T2 RH350BM915$192
Rheem PRO H50 T2 RH310BM915$192
Rheem PRO H50 T2 RH310UM915$192
Rheem PROUH50 T2 RH350BM915$192
Rheem PROUH50 T2 RH350UM915$192
Rheem PROPH65 T0 RH120-M971$204
Rheem PROPH65 T0 RH120-MSO971$204
Rheem XE65T10HM00U0971$204
Rheem XE65T10HMS00U0971$204
Rheem PROPH50 T0 RH120-M1,072$225
Rheem PROPH50 T0 RH120-MSO1,072$225
Rheem XE50T10HM00U01,072$225
Rheem XE50T10HMS00U01,072$225
Rheem PROPH50 T0 RH1201,082$227
Rheem XE50T10H15U01,082$227
Rheem XE50T10HD00U01,082$227
Rheem CPROPH65 T2 RH375-SO1,184$249
Rheem CPROPH65 T2 RH400-301,184$249
Rheem CPROPH65 T2 RH400-SO1,184$249
Rheem CXE65T10H45U11,184$249
Rheem CXE65T10HS45U11,184$249
Rheem ECEPH65 T2 RH400-301,184$249
Rheem ECEPH65 T2 RH400-SO1,184$249
Rheem PROPH65 T2 RH375-301,184$249
Rheem PROPH65 T2 RH375-SO1,184$249
Rheem PROPH65 T2 RH400-301,184$249
Rheem PROPH65 T2 RH400-SO1,184$249
Rheem PROPH65 T2 RH400-Z301,184$249
Rheem XE65T10H45U01,184$249
Rheem XE65T10H45U11,184$249
Rheem XE65T10HS45U01,184$249
Rheem XE65T10HS45U11,184$249
Rheem XE65T10HZ45U11,184$249
Rheem CPROPH80 T2 RH375-SO1,213$255
Rheem CPROPH80 T2 RH400-301,213$255
Rheem CPROPH80 T2 RH400-SO1,213$255
Rheem CXE80T10H45U11,213$255
Rheem CXE80T10HS45U11,213$255
Rheem CXE80T10HS45UO1,213$255
Rheem ECEPH80 T2 RH400-301,213$255
Rheem ECEPH80 T2 RH400-SO1,213$255
Rheem PROPH80 T2 RH375-301,213$255
Rheem PROPH80 T2 RH400-301,213$255
Rheem PROPH80 T2 RH400-SO1,213$255
Rheem PROPH80 T2 RH400-Z301,213$255
Rheem XE80T10H45U11,213$255
Rheem XE80T10HS45U01,213$255
Rheem XE80T10HS45U11,213$255
Rheem XE80T10HZ45U11,213$255
Rheem CPROPH80 T2 RH350BM1,303$274
Rheem ECE H80 T2 RH310BM1,303$274
Rheem ECEPH80 T2 RH350BM1,303$274
Rheem PRO H80 T2 RH310BM1,303$274
Rheem PRO H80 T2 RH310UM1,303$274
Rheem PROUH80 T2 RH350BM1,303$274
Rheem PROUH80 T2 RH350UM1,303$274
Rheem PROPH80 T0 RH120-M1,403$295
Rheem PROPH80 T0 RH120-MSO1,403$295
Rheem XE80T10HM00U01,403$295
Rheem XE80T10HMS00U01,403$295

Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology