Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T)
Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) is a heat pump (hybrid electric) water heater from Ariston with a 61 gallon rated tank and a 77 gallon first-hour rating at a 4.05 UEF — 1225 kWh/yr certified use, 50.5 in tall.
Our take
Ariston's 61-gallon unit reaches the 90th percentile of its class at 4.05 UEF — about $208 a year, undercutting the $204.50 median narrowly despite High-draw testing — while using R-513A refrigerant at less than half the GWP of the R-134a norm. It stays compact for the class at 50.5 inches tall and 20.2 across. First-hour delivery of 77 gallons runs a gallon under the median, still 5+ person territory. Connected-capable, 240 V at 21 A, 446% recovery. Lennox certifies the same unit, giving two badges to compare.
Best for: Top-decile efficiency in a short, low-GWP package.
Trade-off: A gallon under the median on first-hour delivery.
Efficiency
Uniform Energy Factor (UEF)
4.05
Annual electricity use
1225 kWh/yr
Recovery efficiency
446 %
General
Fuel
Electric
Capacity
First-hour rating
77 gal
Rated storage volume
61 gal
Draw pattern
High
Heat pump
Heat pump type
240 Volt Integrated HPWH
Refrigerant (GWP)
R-513A (GWP:630)
Compressor low-temp cutoff
35 °F
Installation
Input voltage
240
Max current draw
21 A
Smart features
Smart / connected capable
Yes
Dimensions
Height
50.5 in
Diameter
20.2 in
Certification
ENERGY STAR certified
Yes
Who is the Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) for?
Its 77 gallon first-hour rating suits a
household of 5+ people under DOE sizing guidance.
Estimated running cost: about $208/year at the national
average electricity rate (1225 kWh/yr certified use).
Needs a 240 V circuit; at 21 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
The heat pump compressor operates down to 35 °F ambient — below that, backup
elements take over.
Also sold as
The Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) is certified hardware that Ariston and its partner brands
publish under 2 names. The same specifications apply to every
variant:
Is the Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) ENERGY STAR certified?
Yes, the Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) holds a current ENERGY STAR certification for water heating efficiency (UEF 4.05).
How much does the Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) cost to run per year?
About $208 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 Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) need?
The Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) runs on a 240 V circuit drawing up to 21 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 Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) a smart water heater?
Yes, the Ariston Heat Pump Water Heater 65-Gallon (ARIHPWH-65-T) is connected-capable, with app control and eligibility for most utility demand-response programs.
