Rinnai REHP50 50 Gallon Hybrid Heat Pump Water Heater, 3.75 UEF

A 50-gallon Rinnai REHP Series hybrid heat pump water heater for indoor residential use. Drawing warmth out of the room air, it achieves a 3.75 UEF and a NEEA Tier 4 rating, and its 73-gallon first-hour rating handles a full household's morning demand.

Most of the routine heating comes from a 500W compressor; the 4,500W element is reserved for times when quicker recovery is wanted, and recovery reaches 27.5 GPH at a 90 F rise. Five modes, namely Vacation, Economy, E-Heater, Hybrid and Heat Pump, let owners favor efficiency or speed. A variable-speed fan keeps noise low for laundry rooms or hall closets, and an optional duct kit helps in small enclosed spaces. The heat pump keeps working down to 37 F ambient.

Hot water, cold water and condensate all use 3/4 in. MNPT fittings, keeping the plumbing familiar to anyone who has fitted an electric tank. It can sit flush against walls at the sides and back, but leave room on top for service. It requires a dedicated 208/240V, single-phase, 30A circuit. The glass-lined steel tank has an anode rod and a 46-gallon rated capacity. It is recirculation capable, CTA-2045 demand-response ready and ENERGY STAR certified.

Highlights

• 3.75 UEF and NEEA Tier 4 efficiency rating

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

• 500W compressor with 4,500W backup element

• Five operating modes including Vacation; quiet variable-speed fan

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

• CTA-2045 demand-response capable, recirculation capable, ENERGY STAR

Specifications