Rheem Hybrid (Heat Pump) Hot Water Heaters L. David Roper http://www.roperld.com/personal/roperldavid.htm http://www.roperld.com/personal/InterdisciplinaryStudies.htm 5 October 2019 Introduction There are three Rheem Prestige Hybrid (Heat-Pump) Electric Hot Water Heaters: Models 50-Gallons 65-Gallons 80-Gallons Height/Diameter 61”/22 ¼“ 64”/24 ¼“ 74”/24 ¼“ Gallons 45 59 72 First-Hour Gallons 67 75 89 8-minute hot showers 4 5 6 Energy Factor 3.50 3.50 3.50 Weight (lbs) 178 225 244 Movie about Rheem Prestige Hybrid HWH Use and Care Manual http://www.rheem.com/product/water-heating-heat-pump-performance-platinum-series-hybrid-heat-pump https://en.wikipedia.org/wiki/Heat_pump_and_refrigeration_cycle Residential Energy Federal Tax Credit
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Roper Installation of Rheem Hybrid 80-Gallons Hot Water Heater Our 1983 State Electric 80-gallons HWH started leaking near the top in November 2017, so we had it replaced on 21
November 2017 by the Rheem Hybrid electric 80-gallon HWH bought from Home Depot. It was quickly and beautifully
installed by Bobby Mitcham of Blacksburg Plumbing.
Here is a comparison of the two HWhs:
Hot Water Heater
kWh/year for average home
Cost $/year for average home @$0.12/kWh
1983 State Electric 5217 $626
2017 Rheem Hybrid 80-gallons 1541 $185
The 4-gallons blue tank in the picture above is the thermal expansion tank (TEK) that is needed because water expands
when heated, approximately 2% when heated from 50° F to 120°. Before installation air pressure in the TEK is set to the
water pressure.
The HWHHy is in a closet in our garage. The closet has a high small vent and we replaced the solid door with a double-
louvered door to let warm air in from the garage and cool air out into the garage.
A bucket catches the water condensed
from the air by the heat pump. (As air is cooled it loses some of its humidity.)
Later installed a pipe to drain the water outside.
The optional Econet WiFi module is
shown on the left with 3 lights. The touch screen on the HWHHy has many controls for HWH parameters.