Rinnai REHP80 80 Gallon Hybrid Heat Pump Water Heater, 4.0 UEF

The 80-gallon model in the Rinnai REHP Series of hybrid heat pump water heaters, made for indoor residential installation. Pulling heat from the surrounding air, it reaches a UEF of up to 4.0 and a 91-gallon first-hour rating for larger households with several bathrooms or a soaking tub.

Recovery is 27.5 GPH at a 90 F rise, with 4.5 kW electric backup to support heavy demand. Operating modes include heat pump, hybrid and electric backup, and a variable-speed fan keeps it quiet. The R134a heat pump keeps working efficiently in rooms as cool as 37 F and can sit flush against walls at the sides and back, with space above kept free for service. Small or sealed rooms may need the optional duct kit for enough air volume.

Power comes from a dedicated 208-240V, 60 Hz, single-phase, 30A circuit, the same as the REHP50. Connections are 3/4 in. threaded, and the heater is recirculation capable. It holds ENERGY STAR, AHRI, NEEA Tier 4 and CTA-2045-B Level 1 ratings. The unit has no Wi-Fi capability.

Highlights

• UEF up to 4.0 with NEEA Tier 4 rating

• 91-gallon first-hour rating; 27.5 GPH recovery at 90 F rise

• 4.5 kW electric backup for high demand

• Heat pump, hybrid and electric backup modes; variable-speed fan

• Duct-ready, runs down to 37 F ambient, fits flush at sides and back

• CTA-2045-B Level 1, ENERGY STAR, AHRI; recirculation capable

Specifications