A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) is a heat pump (hybrid electric) water heater from A. O. Smith with a 46 gallon rated tank and a 65 gallon first-hour rating at a 3.8 UEF — 831 kWh/yr certified use, 63 in tall.
Our take
The premium tune of A. O. Smith's slim platform is the one the certified data favors: 3.80 UEF at the 78th percentile of the class, about $141 a year — the second-lowest Medium-draw cost in the cohort and roughly $455 under a standard electric tank — plus 452% recovery efficiency and a 37 °F cutoff instead of its siblings' 45 °F. Connected-capable, so utility demand-response programs are on the table. Same 63-inch height and 15-inch diameter; 240 V at 22 A. Five brand names sell this exact certified hardware.
Best for: The strongest overall configuration on this narrow-body platform.
Trade-off: Still a 63-inch unit — measure ceiling clearance including the fittings.
Efficiency
Uniform Energy Factor (UEF)
3.8
Annual electricity use
831 kWh/yr
Recovery efficiency
452 %
General
Fuel
Electric
Capacity
First-hour rating
65 gal
Rated storage volume
46 gal
Draw pattern
Medium
Heat pump
Heat pump type
240 Volt Integrated HPWH
Refrigerant (GWP)
R-134a (GWP:1430)
Compressor low-temp cutoff
37 °F
Installation
Input voltage
240
Max current draw
22 A
Smart features
Smart / connected capable
Yes
Dimensions
Height
63 in
Diameter
15 in
Certification
ENERGY STAR certified
Yes
Who is the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) for?
Its 65 gallon first-hour rating suits a
household of 3–4 people under DOE sizing guidance.
Estimated running cost: about $141/year at the national
average electricity rate (831 kWh/yr certified use).
Needs a 240 V circuit; at 22 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
The heat pump compressor operates down to 37 °F ambient — below that, backup
elements take over.
Also sold as
The A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) is certified hardware that A. O. Smith and its partner brands
publish under 7 names. The same specifications apply to every
variant:
Is the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) ENERGY STAR certified?
Yes, the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) holds a current ENERGY STAR certification for water heating efficiency (UEF 3.8).
How much does the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) cost to run per year?
About $141 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What electrical circuit does the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) need?
The A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) runs on a 240 V circuit drawing up to 22 A; per the NEC 125% continuous-load rule plan for at least a 30 A breaker (check the installation manual for the required circuit).
Is the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) a smart water heater?
Yes, the A. O. Smith Heat Pump 50-Gallon (HPS10-50H45DV 2) is connected-capable, with app control and eligibility for most utility demand-response programs.
