GSW WATER HEATERS GHPCO-45 1**+GXST-50S 1*: $194 a year to run
This model (Water heaters) uses 923 kWh of electricity a year, which costs about $194 a year and $1,940 over 10 years at 21.0¢/kWh.
Energy use
923 kWh
per year
Running cost per year
$194
21.0¢/kWh
Running cost over 10 years
$1,940
Efficiency rank
284 / 705
Product details
| Type | Hybrid/Electric Heat Pump |
|---|---|
| Heat pump type | Split System HPWH |
| Fuel | Electric |
| Refrigerant | R-744 (CO2) |
| Available since | February 13, 2026 |
Compared with the average model (Water heaters), this one saves about $33 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| A. O. Smith HPACO-45 1**+AXST-50LBTTP 1** | 915 | $192 |
| A. O. Smith HPACO-45C 1**+AXST-50LBCTTP 1* | 915 | $192 |
| American MHPCO-45 1**+MXST-50LBTTP 1** | 915 | $192 |
| Ariston ARIHPWH-40-T | 915 | $192 |
| Friedrich PROH50 T2 FD310BM | 915 | $192 |
| Friedrich PROH50 T2 FD310UM | 915 | $192 |
| Friedrich PROH50 T2 FD350BM | 915 | $192 |
| Friedrich PROH50 T2 FD350UM | 915 | $192 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Electric cooktops and ranges
- Televisions
- Computers
- Air purifiers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology