Our take in 30 seconds
Best for: hot and mild climatesStrengths
- Heating efficiency (HSPF2 10) beats 77% of models
- Cooling efficiency up to SEER2 21.7, better than 79% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
- Uses newer, lower-impact R-454B refrigerant
Good to know
- Only 53% of its heat output remains at 5°F; plan on backup heat in hard freezes
- Efficiency depends on the indoor unit: SEER2 ranges 18.4–21.7, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (18.4) and HSPF2 (10). 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-AA12NL*** at the three ENERGY STAR test temperatures (cooling capacity is 12,000 BTU/h for reference).
Retention at 17°F: 65% · at 5°F: 53%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $303 a year in Louisiana to $1,343 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¢ | $135 | $168 | $303 |
| Florida | 14.99¢ | $101 | $235 | $336 |
| Mississippi | 14.43¢ | $195 | $169 | $364 |
| Arizona | 15.05¢ | $158 | $216 | $374 |
| Nevada | 12.72¢ | $229 | $149 | $378 |
| Tennessee | 13.42¢ | $282 | $114 | $396 |
| Washington | 14.63¢ | $373 | $33 | $406 |
| North Carolina | 14.95¢ | $292 | $127 | $418 |
| Arkansas | 14.37¢ | $280 | $141 | $421 |
| Texas | 15.91¢ | $215 | $208 | $422 |
| South Carolina | 15.76¢ | $260 | $164 | $424 |
| Georgia | 15.90¢ | $262 | $166 | $428 |
| Oregon | 15.92¢ | $382 | $47 | $429 |
| Kentucky | 13.80¢ | $331 | $99 | $430 |
| Alabama | 16.33¢ | $269 | $170 | $440 |
| Oklahoma | 14.82¢ | $311 | $145 | $456 |
| Utah | 13.31¢ | $379 | $78 | $457 |
| New Mexico | 16.51¢ | $371 | $108 | $479 |
| Idaho | 13.37¢ | $421 | $61 | $482 |
| Nebraska | 13.54¢ | $427 | $79 | $506 |
| Missouri | 16.02¢ | $409 | $115 | $523 |
| Virginia | 17.64¢ | $397 | $127 | $523 |
| West Virginia | 16.31¢ | $440 | $85 | $525 |
| Kansas | 15.47¢ | $418 | $111 | $529 |
| Wyoming | 14.43¢ | $541 | $47 | $588 |
| Colorado | 17.17¢ | $515 | $78 | $593 |
| California | 29.75¢ | $402 | $194 | $596 |
| Delaware | 18.70¢ | $477 | $122 | $599 |
| Indiana | 17.02¢ | $511 | $94 | $605 |
| North Dakota | 13.31¢ | $579 | $39 | $618 |
| Montana | 15.57¢ | $584 | $46 | $630 |
| South Dakota | 15.15¢ | $568 | $64 | $632 |
| Iowa | 17.06¢ | $589 | $83 | $672 |
| Ohio | 19.38¢ | $581 | $101 | $683 |
| Maryland | 21.40¢ | $546 | $140 | $685 |
| Illinois | 19.32¢ | $609 | $101 | $709 |
| Minnesota | 17.20¢ | $697 | $62 | $758 |
| Pennsylvania | 21.77¢ | $653 | $114 | $767 |
| Wisconsin | 19.41¢ | $728 | $76 | $804 |
| New Jersey | 24.61¢ | $664 | $144 | $809 |
| District of Columbia | 25.98¢ | $624 | $186 | $810 |
| Hawaii | 47.18¢ | $35 | $800 | $835 |
| Connecticut | 24.51¢ | $809 | $104 | $913 |
| Michigan | 22.99¢ | $828 | $90 | $918 |
| Vermont | 23.84¢ | $930 | $70 | $1,000 |
| Rhode Island | 28.18¢ | $930 | $110 | $1,040 |
| New York | 28.65¢ | $945 | $121 | $1,067 |
| New Hampshire | 27.64¢ | $1,036 | $90 | $1,127 |
| Massachusetts | 30.48¢ | $1,052 | $119 | $1,171 |
| Maine | 32.11¢ | $1,252 | $84 | $1,336 |
| Alaska | 29.41¢ | $1,323 | $19 | $1,343 |
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-AA12NL*** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Fujitsu AOUH12KTAP1 | 12,000 | 31.5–31.5 | 13.7 | 106% | $401 (−$166) | Compare |
| Bryant 37MAHAQ12AA3 | 12,000 | 20–25.5 | 11.6 | 96% | $433 (−$133) | Compare |
| Senville SENA-12HF-OG | 12,000 | 20–25.4 | 11.6 | 94% | $433 (−$133) | Compare |
| Mitsubishi Electric PUZ-A12NKA7*** | 12,000 | 21.3–26.9 | 10.9 | 38% | $646 (+$80) | Compare |
| Payne 37MARAQ12AA3 | 12,000 | 19–25.5 | 11 | 74% | $443 (−$123) | Compare |
| Bryant 38MARBQ12AA3 | 12,000 | 19.5–25.5 | 10.7 | 97% | $462 (−$104) | Compare |
Full specifications
| Brand | Mitsubishi Electric |
| Outdoor model | SUZ-AA12NL*** |
| Certified by | Mitsubishi Electric U.S. HVAC Division |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 12,000 BTU/h |
| Nominal size | 1 ton |
| SEER2 (certified range) | 18.4 – 21.7 |
| EER2 (best) | 12.6 |
| HSPF2 (best) | 10 |
| Heating capacity @ 47°F | 15,000 BTU/h |
| Heating capacity @ 17°F | 9,800 BTU/h |
| Heating capacity @ 5°F | 7,900 BTU/h |
| COP @ 5°F | 2.3 |
| ENERGY STAR cold-climate | No |
| Certified indoor pairings | 12 |
| 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-AA12NL*** 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 $566 per year ($436 heating, $130 cooling). It ranges from about $303 in Louisiana to $1,343 in Alaska.
Does the Mitsubishi Electric SUZ-AA12NL*** work in cold weather?
It is not ENERGY STAR cold-climate certified. It delivers 7,900 BTU/h at 5°F (53% of its 47°F capacity), so in very cold climates expect more reliance on backup heat.
What size is the Mitsubishi Electric SUZ-AA12NL***?
It is rated at 12,000 BTU/h of cooling, roughly 1 ton, and 15,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.