Our take in 30 seconds
Best for: mild climates or homes with backup heatStrengths
- Meets ENERGY STAR efficiency requirements.
Good to know
- Only 56% of its heat output remains at 5°F; plan on backup heat in hard freezes
- Heating efficiency (HSPF2 8.1) is in the lower third of models
- Uses R-410A, a refrigerant being phased down; future service may cost more
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (15.2) and HSPF2 (8.1). Assumes the unit is correctly sized. How we calculate.
Heating capacity as it gets colder
A heat pump's output falls as outdoor temperature drops. This is the certified heat output of the Fujitsu WP15AZ24AJ2N at the three ENERGY STAR test temperatures (cooling capacity is 22,800 BTU/h for reference).
Retention at 17°F: 70% · at 5°F: 56%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $640 a year in Louisiana to $2,543 in Maine, driven by local electricity prices and how much heating or cooling the climate needs. Click a column to sort.
| State | Price | Heating | Cooling | Total / yr |
|---|---|---|---|---|
| Louisiana | 12.87¢ | $254 | $386 | $640 |
| Florida | 14.99¢ | $190 | $540 | $730 |
| Mississippi | 14.43¢ | $366 | $390 | $755 |
| Nevada | 12.72¢ | $430 | $343 | $773 |
| Washington | 14.63¢ | $700 | $77 | $777 |
| Tennessee | 13.42¢ | $529 | $262 | $791 |
| Arizona | 15.05¢ | $297 | $497 | $793 |
| Oregon | 15.92¢ | $717 | $107 | $824 |
| North Carolina | 14.95¢ | $547 | $292 | $839 |
| Arkansas | 14.37¢ | $526 | $323 | $849 |
| Kentucky | 13.80¢ | $622 | $228 | $849 |
| South Carolina | 15.76¢ | $488 | $378 | $866 |
| Georgia | 15.90¢ | $492 | $382 | $874 |
| Texas | 15.91¢ | $403 | $477 | $880 |
| Utah | 13.31¢ | $712 | $180 | $892 |
| Alabama | 16.33¢ | $506 | $392 | $898 |
| Oklahoma | 14.82¢ | $584 | $333 | $917 |
| Idaho | 13.37¢ | $790 | $140 | $931 |
| New Mexico | 16.51¢ | $697 | $248 | $945 |
| Nebraska | 13.54¢ | $800 | $183 | $983 |
| West Virginia | 16.31¢ | $826 | $196 | $1,022 |
| Missouri | 16.02¢ | $767 | $264 | $1,031 |
| Virginia | 17.64¢ | $745 | $291 | $1,036 |
| Kansas | 15.47¢ | $784 | $255 | $1,039 |
| Wyoming | 14.43¢ | $1,015 | $108 | $1,124 |
| Colorado | 17.17¢ | $967 | $180 | $1,147 |
| Indiana | 17.02¢ | $958 | $217 | $1,175 |
| Delaware | 18.70¢ | $895 | $280 | $1,175 |
| North Dakota | 13.31¢ | $1,086 | $90 | $1,176 |
| California | 29.75¢ | $754 | $446 | $1,200 |
| Montana | 15.57¢ | $1,096 | $105 | $1,201 |
| South Dakota | 15.15¢ | $1,066 | $148 | $1,214 |
| Iowa | 17.06¢ | $1,104 | $192 | $1,296 |
| Ohio | 19.38¢ | $1,091 | $233 | $1,324 |
| Maryland | 21.40¢ | $1,024 | $321 | $1,345 |
| Illinois | 19.32¢ | $1,142 | $232 | $1,374 |
| Minnesota | 17.20¢ | $1,307 | $142 | $1,449 |
| Pennsylvania | 21.77¢ | $1,226 | $261 | $1,487 |
| Wisconsin | 19.41¢ | $1,366 | $175 | $1,541 |
| New Jersey | 24.61¢ | $1,247 | $332 | $1,579 |
| District of Columbia | 25.98¢ | $1,170 | $429 | $1,599 |
| Connecticut | 24.51¢ | $1,518 | $239 | $1,757 |
| Michigan | 22.99¢ | $1,553 | $207 | $1,760 |
| Vermont | 23.84¢ | $1,745 | $161 | $1,906 |
| Hawaii | 47.18¢ | $66 | $1,840 | $1,906 |
| Rhode Island | 28.18¢ | $1,745 | $254 | $1,999 |
| New York | 28.65¢ | $1,774 | $279 | $2,054 |
| New Hampshire | 27.64¢ | $1,945 | $207 | $2,152 |
| Massachusetts | 30.48¢ | $1,973 | $274 | $2,248 |
| Alaska | 29.41¢ | $2,484 | $44 | $2,528 |
| Maine | 32.11¢ | $2,350 | $193 | $2,543 |
Similar-size alternatives
Other ducted split system units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Fujitsu WP15AZ24AJ2N at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Carrier 27VNA324A*030* | 23,800 | 18–23 | 10.5 | 82% | $1,044 (−$73) | Compare |
| Rheem RP19AY24AJVC | 22,800 | 20–21 | 10 | 81% | $925 (−$192) | Compare |
| Trane 5TWR7024A1 | 24,000 | 15.2–17.1 | 11 | 79% | $907 (−$210) | Compare |
| Trane 5TWX7024A1 | 24,000 | 15.2–18 | 11 | 79% | $907 (−$210) | Compare |
| Bryant 37MUHAQ24AA3 | 24,000 | 16–18.7 | 10.5 | 86% | $991 (−$126) | Compare |
| ACiQ ACIQ-24-HPD | 24,000 | 16–18.6 | 10.5 | 83% | $1,019 (−$98) | Compare |
Full specifications
| Brand | Fujitsu |
| Outdoor model | WP15AZ24AJ2N |
| Certified by | Fujitsu General America, Inc. |
| Product type | Ducted split system |
| Compressor | Two-stage |
| Refrigerant | R-410A |
| Cooling capacity | 22,800 BTU/h |
| Nominal size | 2 tons |
| SEER2 (certified range) | 15.2 – 15.2 |
| EER2 (best) | 11.7 |
| HSPF2 (best) | 8.1 |
| Heating capacity @ 47°F | 22,800 BTU/h |
| Heating capacity @ 17°F | 16,000 BTU/h |
| Heating capacity @ 5°F | 12,700 BTU/h |
| COP @ 5°F | 2.2 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 6 |
| Latest certification | 2026-06 |
Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), retrieved November 7, 2026. Capacities and HSPF2 are the highest values across certified pairings; confirm your exact system's AHRI reference number with your installer.
Frequently asked questions
How much does the Fujitsu WP15AZ24AJ2N cost to run per year?
At the U.S. average residential electricity price of 18.16¢/kWh and typical national heating and cooling hours, we estimate about $1,118 per year ($818 heating, $300 cooling). It ranges from about $640 in Louisiana to $2,543 in Maine.
Does the Fujitsu WP15AZ24AJ2N work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 12,700 BTU/h at 5°F, 56% of its 47°F capacity, with a COP of 2.2 at 5°F.
What size is the Fujitsu WP15AZ24AJ2N?
It is rated at 22,800 BTU/h of cooling, roughly 2 tons, and 22,800 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.