GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1)
GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) is a heat pump (hybrid electric) water heater from GSW WATER HEATERS with a 73 gallon rated tank and a 95 gallon first-hour rating at a 3.8 UEF — 1306 kWh/yr certified use, 58 in tall.
Also sold as the A. O. Smith Split System Heat Pump 80-Gallon (HPACO-45 1-+AXST-80 1). This model is the same certified
hardware as the A. O. Smith Split System Heat Pump 80-Gallon (HPACO-45 1-+AXST-80 1), published under a
different brand — full details, comparisons, and pricing live on that page. The
certified figures below are identical.
Efficiency
Uniform Energy Factor (UEF)
3.8
Annual electricity use
1306 kWh/yr
Recovery efficiency
423 %
General
Fuel
Electric
Capacity
First-hour rating
95 gal
Rated storage volume
73 gal
Draw pattern
High
Heat pump
Heat pump type
Split System HPWH
Refrigerant (GWP)
R-744 (CO₂) (GWP:1 | Lower GWP)
Compressor low-temp cutoff
1 °F
Installation
Input voltage
240
Max current draw
20.2 A
Smart features
Smart / connected capable
Yes
Dimensions
Height
58 in
Diameter
20 in
Certification
ENERGY STAR certified
Yes
Who is the GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) for?
Its 95 gallon first-hour rating suits a
household of 5+ people under DOE sizing guidance.
Estimated running cost: about $222/year at the national
average electricity rate (1306 kWh/yr certified use).
Needs a 240 V circuit; at 20.2 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
The heat pump compressor operates down to 1 °F ambient — below that, backup
elements take over.
Is the GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) ENERGY STAR certified?
Yes, the GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) holds a current ENERGY STAR certification for water heating efficiency (UEF 3.8).
How much does the GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) cost to run per year?
About $222 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 GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) need?
The GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) runs on a 240 V circuit drawing up to 20.2 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 GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) a smart water heater?
Yes, the GSW WATER HEATERS Split System Heat Pump 80-Gallon (GHPCO-45 1-+GXST-80TTP 1) is connected-capable, with app control and eligibility for most utility demand-response programs.
