Our take in 30 seconds
Best for: hot and mild climatesStrengths
- Heating efficiency (HSPF2 10.6) beats 87% of models
- Cooling efficiency up to SEER2 20.9, better than 73% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
- Uses newer, lower-impact R-454B refrigerant
Good to know
- Only 55% of its heat output remains at 5°F; plan on backup heat in hard freezes
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (18.8) and HSPF2 (10.6). 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 Mitsubishi Electric SUZ-AA15NL*** at the three ENERGY STAR test temperatures (cooling capacity is 15,000 BTU/h for reference).
Retention at 17°F: 63% · at 5°F: 55%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $358 a year in Louisiana to $1,522 in Alaska, 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¢ | $153 | $205 | $358 |
| Florida | 14.99¢ | $115 | $287 | $402 |
| Mississippi | 14.43¢ | $221 | $207 | $428 |
| Nevada | 12.72¢ | $259 | $183 | $442 |
| Arizona | 15.05¢ | $179 | $264 | $443 |
| Tennessee | 13.42¢ | $319 | $139 | $458 |
| Washington | 14.63¢ | $422 | $41 | $463 |
| North Carolina | 14.95¢ | $330 | $155 | $485 |
| Arkansas | 14.37¢ | $317 | $172 | $489 |
| Oregon | 15.92¢ | $433 | $57 | $490 |
| South Carolina | 15.76¢ | $294 | $201 | $496 |
| Kentucky | 13.80¢ | $375 | $121 | $496 |
| Texas | 15.91¢ | $243 | $254 | $497 |
| Georgia | 15.90¢ | $297 | $203 | $500 |
| Alabama | 16.33¢ | $305 | $208 | $514 |
| Utah | 13.31¢ | $429 | $96 | $525 |
| Oklahoma | 14.82¢ | $352 | $177 | $530 |
| Idaho | 13.37¢ | $477 | $75 | $551 |
| New Mexico | 16.51¢ | $421 | $132 | $552 |
| Nebraska | 13.54¢ | $483 | $97 | $580 |
| West Virginia | 16.31¢ | $499 | $104 | $603 |
| Missouri | 16.02¢ | $462 | $141 | $603 |
| Virginia | 17.64¢ | $449 | $155 | $604 |
| Kansas | 15.47¢ | $473 | $136 | $609 |
| Wyoming | 14.43¢ | $613 | $58 | $670 |
| Colorado | 17.17¢ | $583 | $96 | $679 |
| Delaware | 18.70¢ | $540 | $149 | $689 |
| California | 29.75¢ | $455 | $237 | $692 |
| Indiana | 17.02¢ | $578 | $115 | $693 |
| North Dakota | 13.31¢ | $655 | $48 | $703 |
| Montana | 15.57¢ | $661 | $56 | $717 |
| South Dakota | 15.15¢ | $643 | $79 | $722 |
| Iowa | 17.06¢ | $666 | $102 | $768 |
| Ohio | 19.38¢ | $658 | $124 | $782 |
| Maryland | 21.40¢ | $618 | $171 | $789 |
| Illinois | 19.32¢ | $689 | $123 | $812 |
| Minnesota | 17.20¢ | $789 | $75 | $864 |
| Pennsylvania | 21.77¢ | $739 | $139 | $878 |
| Wisconsin | 19.41¢ | $824 | $93 | $917 |
| New Jersey | 24.61¢ | $752 | $177 | $929 |
| District of Columbia | 25.98¢ | $706 | $228 | $934 |
| Hawaii | 47.18¢ | $40 | $979 | $1,019 |
| Connecticut | 24.51¢ | $916 | $127 | $1,043 |
| Michigan | 22.99¢ | $937 | $110 | $1,047 |
| Vermont | 23.84¢ | $1,053 | $86 | $1,138 |
| Rhode Island | 28.18¢ | $1,053 | $135 | $1,188 |
| New York | 28.65¢ | $1,070 | $149 | $1,219 |
| New Hampshire | 27.64¢ | $1,173 | $110 | $1,284 |
| Massachusetts | 30.48¢ | $1,190 | $146 | $1,336 |
| Maine | 32.11¢ | $1,418 | $102 | $1,520 |
| Alaska | 29.41¢ | $1,498 | $23 | $1,522 |
Similar-size alternatives
Other mini-split / multi-split units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Mitsubishi Electric SUZ-AA15NL*** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Fujitsu AOUH15KTAP1 | 14,500 | 28.7–28.7 | 13 | 106% | $490 (−$163) | Compare |
| Fujitsu AOUH12KUAH1 | 14,200 | 19.1–25 | 11.5 | 103% | $603 (−$49) | Compare |
| Fujitsu AOUH12KUBS1 | 14,200 | 19.1–25 | 11.5 | 89% | $603 (−$49) | Compare |
| Mitsubishi Electric SUZ-AA15NLHZ*** | 15,000 | 16.2–17.5 | 10.2 | 100% | $698 (+$45) | Compare |
Full specifications
| Brand | Mitsubishi Electric |
| Outdoor model | SUZ-AA15NL*** |
| Certified by | Mitsubishi Electric U.S. HVAC Division |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 15,000 BTU/h |
| Nominal size | 1 ton |
| SEER2 (certified range) | 18.8 – 20.9 |
| EER2 (best) | 13.2 |
| HSPF2 (best) | 10.6 |
| Heating capacity @ 47°F | 18,000 BTU/h |
| Heating capacity @ 17°F | 11,300 BTU/h |
| Heating capacity @ 5°F | 9,900 BTU/h |
| COP @ 5°F | 3 |
| ENERGY STAR cold-climate | No |
| Certified indoor pairings | 10 |
| 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 Mitsubishi Electric SUZ-AA15NL*** 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 $653 per year ($493 heating, $159 cooling). It ranges from about $358 in Louisiana to $1,522 in Alaska.
Does the Mitsubishi Electric SUZ-AA15NL*** work in cold weather?
It is not ENERGY STAR cold-climate certified. It delivers 9,900 BTU/h at 5°F (55% of its 47°F capacity), so in very cold climates expect more reliance on backup heat.
What size is the Mitsubishi Electric SUZ-AA15NL***?
It is rated at 15,000 BTU/h of cooling, roughly 1 ton, and 18,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.