Our take in 30 seconds
Best for: mild climates or homes with backup heatStrengths
- Meets ENERGY STAR efficiency requirements.
Good to know
- Only 58% 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 Friedrich FWP15AZ36AJ2N at the three ENERGY STAR test temperatures (cooling capacity is 34,200 BTU/h for reference).
Retention at 17°F: 73% · at 5°F: 58%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $960 a year in Louisiana to $3,814 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¢ | $380 | $579 | $960 |
| Florida | 14.99¢ | $285 | $809 | $1,094 |
| Mississippi | 14.43¢ | $548 | $584 | $1,133 |
| Nevada | 12.72¢ | $644 | $515 | $1,160 |
| Washington | 14.63¢ | $1,050 | $115 | $1,165 |
| Tennessee | 13.42¢ | $793 | $393 | $1,186 |
| Arizona | 15.05¢ | $445 | $745 | $1,190 |
| Oregon | 15.92¢ | $1,075 | $161 | $1,237 |
| North Carolina | 14.95¢ | $821 | $437 | $1,258 |
| Arkansas | 14.37¢ | $789 | $485 | $1,274 |
| Kentucky | 13.80¢ | $932 | $342 | $1,274 |
| South Carolina | 15.76¢ | $732 | $567 | $1,299 |
| Georgia | 15.90¢ | $738 | $572 | $1,311 |
| Texas | 15.91¢ | $605 | $716 | $1,321 |
| Utah | 13.31¢ | $1,068 | $270 | $1,337 |
| Alabama | 16.33¢ | $758 | $588 | $1,346 |
| Oklahoma | 14.82¢ | $876 | $500 | $1,376 |
| Idaho | 13.37¢ | $1,185 | $211 | $1,396 |
| New Mexico | 16.51¢ | $1,046 | $371 | $1,417 |
| Nebraska | 13.54¢ | $1,201 | $274 | $1,475 |
| West Virginia | 16.31¢ | $1,240 | $294 | $1,533 |
| Missouri | 16.02¢ | $1,150 | $396 | $1,546 |
| Virginia | 17.64¢ | $1,117 | $437 | $1,554 |
| Kansas | 15.47¢ | $1,176 | $383 | $1,559 |
| Wyoming | 14.43¢ | $1,523 | $162 | $1,686 |
| Colorado | 17.17¢ | $1,450 | $270 | $1,720 |
| Indiana | 17.02¢ | $1,437 | $326 | $1,763 |
| Delaware | 18.70¢ | $1,342 | $421 | $1,763 |
| North Dakota | 13.31¢ | $1,630 | $135 | $1,764 |
| California | 29.75¢ | $1,130 | $669 | $1,800 |
| Montana | 15.57¢ | $1,644 | $158 | $1,801 |
| South Dakota | 15.15¢ | $1,599 | $222 | $1,821 |
| Iowa | 17.06¢ | $1,657 | $288 | $1,945 |
| Ohio | 19.38¢ | $1,637 | $349 | $1,985 |
| Maryland | 21.40¢ | $1,536 | $482 | $2,018 |
| Illinois | 19.32¢ | $1,713 | $348 | $2,061 |
| Minnesota | 17.20¢ | $1,961 | $213 | $2,174 |
| Pennsylvania | 21.77¢ | $1,838 | $392 | $2,230 |
| Wisconsin | 19.41¢ | $2,049 | $262 | $2,311 |
| New Jersey | 24.61¢ | $1,870 | $498 | $2,369 |
| District of Columbia | 25.98¢ | $1,755 | $643 | $2,398 |
| Connecticut | 24.51¢ | $2,277 | $358 | $2,635 |
| Michigan | 22.99¢ | $2,330 | $310 | $2,640 |
| Vermont | 23.84¢ | $2,617 | $241 | $2,858 |
| Hawaii | 47.18¢ | $100 | $2,760 | $2,860 |
| Rhode Island | 28.18¢ | $2,618 | $380 | $2,998 |
| New York | 28.65¢ | $2,661 | $419 | $3,080 |
| New Hampshire | 27.64¢ | $2,918 | $311 | $3,229 |
| Massachusetts | 30.48¢ | $2,960 | $411 | $3,371 |
| Alaska | 29.41¢ | $3,725 | $66 | $3,791 |
| Maine | 32.11¢ | $3,525 | $289 | $3,814 |
Similar-size alternatives
Other ducted split system units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Friedrich FWP15AZ36AJ2N at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Ruud UP19AY36AJVC | 34,200 | 19–21 | 10 | 87% | $1,353 (−$323) | Compare |
| Payne 37MUHAQ30AA3 | 30,000 | 15.3–17.5 | 10.8 | 98% | $1,306 (−$370) | Compare |
| Midea MO1HE-H30B-2A | 30,000 | 15.2–17.5 | 10.8 | 98% | $1,309 (−$367) | Compare |
| Bryant 37MUHAQ36AA3 | 36,000 | 15.8–18 | 10.3 | 103% | $1,527 (−$149) | Compare |
| Daikin DH9VSA361CA* | 34,200 | 16.9–21 | 10 | 100% | $1,398 (−$278) | Compare |
| Panasonic CU-HM36BAHU | 36,000 | 15.6–17.4 | 10.3 | 103% | $1,533 (−$143) | Compare |
Full specifications
| Brand | Friedrich |
| Outdoor model | FWP15AZ36AJ2N |
| Certified by | Rheem Sales Company, Inc. |
| Product type | Ducted split system |
| Compressor | Two-stage |
| Refrigerant | R-410A |
| Cooling capacity | 34,200 BTU/h |
| Nominal size | 3 tons |
| SEER2 (certified range) | 15.2 – 15.2 |
| EER2 (best) | 11.7 |
| HSPF2 (best) | 8.1 |
| Heating capacity @ 47°F | 34,200 BTU/h |
| Heating capacity @ 17°F | 24,800 BTU/h |
| Heating capacity @ 5°F | 19,900 BTU/h |
| COP @ 5°F | 2.3 |
| ENERGY STAR cold-climate | No |
| Certified indoor pairings | 38 |
| 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 Friedrich FWP15AZ36AJ2N 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 $1,676 per year ($1,227 heating, $449 cooling). It ranges from about $960 in Louisiana to $3,814 in Maine.
Does the Friedrich FWP15AZ36AJ2N work in cold weather?
It is not ENERGY STAR cold-climate certified. It delivers 19,900 BTU/h at 5°F (58% of its 47°F capacity), so in very cold climates expect more reliance on backup heat.
What size is the Friedrich FWP15AZ36AJ2N?
It is rated at 34,200 BTU/h of cooling, roughly 3 tons, and 34,200 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.