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Rheem XE40T10HZ45U1

Rheem XE40T10HZ45U1 is in the ENERGY STAR list as of Oct 22, 2026.

  • Heat pump water heater
  • 1 listed model

No certified figures were found under this model number. Units made for another brand are often certified under that brand's basic model.

Its figures are also listed under Rheem PROPH40 T2 RH375-SO.

Storage volume
36gallons
UEF
3.83Uniform energy factor
First-hour rating
60gallonsHot water in the first hour
See it among every heat pump model

Product history

Rheem XE40T10HZ45U1 has a recorded ENERGY STAR market-availability date of Oct 1, 2026. It first appeared in the ENERGY STAR list between Oct 1, 2026 and Oct 17, 2026.

ENERGY STAR certified models

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiency
XE40T10HZ45U1363.8360434%

It holds 36 gallons in the test, 4 gallons less than its 40-gallon sold size. It delivers 60 gallons of hot water in the test's first hour. That is 24 gallons more than its tank holds, since it reheats during the hour. In the first hour, 371 of the 481 heat pump models give more hot water. Among heat pump models, the median first-hour rating is 72 gallons.

Its single model number, XE40T10HZ45U1, is ENERGY STAR certified. For each unit of energy it uses, 3.83 units end up in the hot water (its UEF). A UEF above 1 is possible because it moves heat from the air into the water. The daily hot water use in the test, called its draw pattern, was medium. Its UEF is lower than that of 23 of the 226 heat pump models with its draw pattern. For its type and draw pattern, the UEF runs from 2.59 to 4.23. When it reheats water in the test, the water gains 434% of the energy it uses.

There are 28 more basic models with the same test figures. The Friedrich, Richmond, and Ruud brands list one or more of them. For the full group, see the Rheem PROPH40 T2 RH375-SO.

It may qualify for 17 rebate programs in 17 states. Another 5 rebate programs may accept it if it meets their other terms.

Also listed as

They carry every figure in the table above.

16 more basic models carry these figures.

Rebates

ProgramStateStatusProgram page
Efficiency Arizona AZ May qualify Its own page
SRP Heat pump water heater rebate AZ May qualify Its own page
CleanPowerSF Electrify Your Home bill credits CA May qualify Its own page
Los Angeles Department of Water and Power Consumer Rebate Program CA May qualify Its own page
SVCE Home Rebates CA May qualify if it meets the other terms Its own page
TECH Clean California HEEHRA Phase I CA May qualify Its own page
Colorado Springs Utilities Water heater rebate (heat pump) CO May qualify Its own page
Delaware Electric Cooperative Heat Pump Water Heating Rebate DE May qualify Its own page
Hawai‘i State Energy Office eHale Energy Saver Rebate Program HI May qualify Its own page
Ameren Illinois Instant Incentives IL May qualify Its own page
DTE Energy Water Heaters (heat pump) MI May qualify Its own page
Entergy Mississippi Residential Appliances Program MS May qualify Its own page
NC DEQ Energy Saver North Carolina NC May qualify Its own page
NHSaves Heat Pump Water Heater NH May qualify if it meets the other terms Its own page
PNM Home Energy Checkup Rebates NM May qualify Its own page
PECO Appliance Rebates PA May qualify Its own page
Rhode Island Energy Heat Pump Water Heater Rebate RI May qualify if it meets the other terms Its own page
TVA EnergyRight TN, AL, MS, KY, GA, NC, VA May qualify Its own page
Dominion Energy Virginia Water Energy Savings Program VA May qualify Its own page
Virginia Energy Home Energy Rebates VA May qualify if it meets the other terms Its own page
Focus on Energy (heat pump) WI May qualify if it meets the other terms Its own page
Focus on Energy Home Electrification and Appliance Rebates WI May qualify Its own page

Programs change their terms. Check the program's own page before you buy.

Updated Oct 22, 2026 · Methodology

Not covered

  • Advertised figures. We have none on file for this model.