AMERICAN STANDARD WATER HEATERS ASHPWH-40
Covers every color and finish of this model.
ENERGY STAR certified
Heat pump water heater · 37 gallons
Inthis water heater costs
about $14 a month
$164 a year
An estimate at your state's average rate — not a guarantee of your bill.
The yellow sticker says $127 a year.
You'll pay $37 more.
Sticker uses 14¢ per kWh. The U.S. average is 18.0¢ per kWh.
Energy use
907 kWh a year
vs similar heat pump water heater
-19%
Cheaper water heaters, same size
ENERGY STAR lists one other certified model at the same 907 kWh a year, size and type, so everything on this page applies to it too.
Cheaper to run, same size
- GE Profile PF40S10FPY01Heat pump water heater · 40 gallons$131
- GE Profile PH40S10BPY01Heat pump water heater · 40 gallons$139
- Friedrich PROH40 T0 FD120-MHeat pump water heater · 36 gallons$141
- Friedrich PROH40 T0 FD120-MSOHeat pump water heater · 36 gallons$141
A year at the U.S. average residential rate.
Cost in every state
907 kWh a year × each state's average residential rate (EIA 12-month average through July 2026).
| State | Rate | Per year | Per month |
|---|---|---|---|
| Hawaii | 43.7¢ | $396 | about $33 a month |
| California | 33.1¢ | $300 | about $25 a month |
| Massachusetts | 30.4¢ | $276 | about $23 a month |
| Rhode Island | 29.4¢ | $267 | about $22 a month |
| Maine | 29.3¢ | $266 | about $22 a month |
| New York | 28.4¢ | $257 | about $21 a month |
| Connecticut | 28.2¢ | $256 | about $21 a month |
| Alaska | 27.0¢ | $245 | about $20 a month |
| New Hampshire | 26.8¢ | $243 | about $20 a month |
| District of Columbia | 24.2¢ | $220 | about $18 a month |
Show all 52 statesShow fewer
| Vermont | 23.9¢ | $217 | about $18 a month |
|---|---|---|---|
| New Jersey | 23.6¢ | $214 | about $18 a month |
| Maryland | 22.3¢ | $202 | about $17 a month |
| Michigan | 21.0¢ | $190 | about $16 a month |
| Pennsylvania | 20.8¢ | $188 | about $16 a month |
| Illinois | 19.0¢ | $172 | about $14 a month |
| Wisconsin | 18.8¢ | $170 | about $14 a month |
| Ohio | 18.3¢ | $166 | about $14 a month |
| U.S. average | 18.0¢ | $164 | about $14 a month |
| Delaware | 18.0¢ | $163 | about $14 a month |
| Indiana | 17.1¢ | $155 | about $13 a month |
| Virginia | 16.6¢ | $150 | about $13 a month |
| Colorado | 16.6¢ | $150 | about $13 a month |
| Alabama | 16.5¢ | $150 | about $12 a month |
| Minnesota | 16.2¢ | $147 | about $12 a month |
| Texas | 16.0¢ | $145 | about $12 a month |
| South Carolina | 15.7¢ | $143 | about $12 a month |
| West Virginia | 15.7¢ | $142 | about $12 a month |
| Oregon | 15.6¢ | $141 | about $12 a month |
| Arizona | 15.5¢ | $140 | about $12 a month |
| Florida | 15.4¢ | $140 | about $12 a month |
| New Mexico | 15.2¢ | $138 | about $12 a month |
| Kansas | 15.1¢ | $137 | about $11 a month |
| Georgia | 15.1¢ | $137 | about $11 a month |
| Mississippi | 14.9¢ | $135 | about $11 a month |
| North Carolina | 14.9¢ | $135 | about $11 a month |
| South Dakota | 14.3¢ | $129 | about $11 a month |
| Washington | 14.2¢ | $128 | about $11 a month |
| Wyoming | 14.2¢ | $128 | about $11 a month |
| Iowa | 14.1¢ | $128 | about $11 a month |
| Kentucky | 14.0¢ | $127 | about $11 a month |
| Montana | 13.9¢ | $126 | about $11 a month |
| Missouri | 13.9¢ | $126 | about $10 a month |
| Tennessee | 13.7¢ | $124 | about $10 a month |
| Oklahoma | 13.6¢ | $124 | about $10 a month |
| Nevada | 13.6¢ | $123 | about $10 a month |
| Arkansas | 13.5¢ | $122 | about $10 a month |
| Utah | 13.3¢ | $121 | about $10 a month |
| Louisiana | 13.1¢ | $119 | about $10 a month |
| Nebraska | 12.9¢ | $117 | about $10 a month |
| Idaho | 12.7¢ | $115 | about $10 a month |
| North Dakota | 12.5¢ | $114 | about $9 a month |
What the AMERICAN STANDARD WATER HEATERS ASHPWH-40 costs where electricity is expensive
At Hawaii's average residential rate of 43.7¢ per kWh, the AMERICAN STANDARD WATER HEATERS ASHPWH-40 costs $396 a year — $269 more a year than the label says. The EnergyGuide label estimates $127 a year, because every label in the country is calculated at 14¢ per kWh. At the U.S. average of 18.0¢ per kWh this water heater costs $164 a year, and in North Dakota, the cheapest state, $114 a year.
| Where | Rate | Cost a year | vs the label |
|---|---|---|---|
| Hawaii | 43.7¢ per kWh | $396 | +$269 |
| California | 33.1¢ per kWh | $300 | +$174 |
| Massachusetts | 30.4¢ per kWh | $276 | +$149 |
| Rhode Island | 29.4¢ per kWh | $267 | +$140 |
| Maine | 29.3¢ per kWh | $266 | +$139 |
| North Dakota | 12.5¢ per kWh | $114 | −$13 |
Electricity prices: EIA 12-month average through July 2026, residential sector, average revenue per kWh. Label figure calculated at 14¢ per kWh, the rate the FTC requires on labels.
Full specs
At the U.S. average residential rate this one costs $164 a year — about 19% cheaper to run than the average heat pump water heater ($203 a year across 510 certified models).
Every model on this scale is ENERGY STAR certified. Range across 510 heat pump water heaters, priced a year at the U.S. average residential rate.
- Brand
- AMERICAN STANDARD WATER HEATERS
- Model number
- ASHPWH-40*****as ENERGY STAR lists it; * and # stand for color and finish codes
- Model name
- Heat Pump Water Heater
- Type
- Heat pump water heater
- Capacity
- 37 gallons
- Annual energy use
- 907 kWh a year
- Combined Energy Factor (CEF)
- 3.58
- ENERGY STAR Most Efficient
- No
- On the market since
- December 2023
- Certified
- February 2026
- UPC
- 817215029586
- Tank volume (gallons)
- 37
- First-hour rating (gallons)
- 66
- Uniform Energy Factor (UEF)
- 3.58
- Draw pattern
- Medium-Usage
- Heat pump type
- 240 Volt Integrated HPWH
- Recovery efficiency (%)
- 402.00
- Tank height (in)
- 37.6
- Tank diameter (in)
- 18.2
Where to buy
We do not sell appliances. These open a search on the retailer's own site.
Common questions
+How much does the AMERICAN STANDARD WATER HEATERS ASHPWH-40 cost to run per month?
about $14 a month at the U.S. average residential rate of 18.0¢ per kWh, or $164 a year. Your cost depends on your state's rate — see the table above.
+How many kWh does the AMERICAN STANDARD WATER HEATERS ASHPWH-40 use?
907 kWh a year, as the manufacturer filed it with the EPA, in the ENERGY STAR certified product database.
+Is the AMERICAN STANDARD WATER HEATERS ASHPWH-40 energy efficient?
It is listed as ENERGY STAR certified. It uses about 19% less electricity than the average heat pump water heater (average: 1,123 kWh a year).
+How does the AMERICAN STANDARD WATER HEATERS ASHPWH-40 compare to the average water heater?
The average heat pump water heater in our database uses 1,123 kWh a year, costing $203 a year at the U.S. average residential rate. The AMERICAN STANDARD WATER HEATERS ASHPWH-40 uses 907 kWh a year, costing $164 a year.
How we calculate this
Annual energy use (907 kWh a year) is the figure the manufacturer filed for this model with the EPA, in the ENERGY STAR certified product database. Running cost is that figure multiplied by a state's average residential electricity price from the U.S. Energy Information Administration (12-month average through July 2026, average revenue per kWh).
The annual figure for a water heater assumes a hot water draw of 10, 38, 55 or 84 gallons a day, set by the heater's first-hour rating, per the DOE test procedure (10 CFR 430 Subpart B, Appendix E). Full methodology.
Sources: EPA ENERGY STAR certified product data, updated weekly · U.S. EIA electricity prices, 12-month average through July 2026.