Our take in 30 seconds
Best for: hot and mild climatesStrengths
- Heating efficiency (HSPF2 12.9) beats 98% 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 17.6–21.7, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (17.6) and HSPF2 (12.9). 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-AA09NL*** at the three ENERGY STAR test temperatures (cooling capacity is 9,000 BTU/h for reference).
Retention at 17°F: 66% · 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 $215 a year in Louisiana to $842 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¢ | $84 | $132 | $215 |
| Florida | 14.99¢ | $63 | $184 | $247 |
| Mississippi | 14.43¢ | $121 | $133 | $254 |
| Washington | 14.63¢ | $231 | $26 | $258 |
| Nevada | 12.72¢ | $142 | $117 | $259 |
| Tennessee | 13.42¢ | $175 | $89 | $264 |
| Arizona | 15.05¢ | $98 | $169 | $267 |
| Oregon | 15.92¢ | $237 | $37 | $274 |
| North Carolina | 14.95¢ | $181 | $99 | $280 |
| Kentucky | 13.80¢ | $205 | $78 | $283 |
| Arkansas | 14.37¢ | $174 | $110 | $284 |
| South Carolina | 15.76¢ | $161 | $129 | $290 |
| Georgia | 15.90¢ | $163 | $130 | $293 |
| Texas | 15.91¢ | $133 | $163 | $296 |
| Utah | 13.31¢ | $235 | $61 | $297 |
| Alabama | 16.33¢ | $167 | $134 | $301 |
| Oklahoma | 14.82¢ | $193 | $114 | $307 |
| Idaho | 13.37¢ | $261 | $48 | $309 |
| New Mexico | 16.51¢ | $230 | $84 | $315 |
| Nebraska | 13.54¢ | $265 | $62 | $327 |
| West Virginia | 16.31¢ | $273 | $67 | $340 |
| Missouri | 16.02¢ | $253 | $90 | $343 |
| Virginia | 17.64¢ | $246 | $99 | $345 |
| Kansas | 15.47¢ | $259 | $87 | $346 |
| Wyoming | 14.43¢ | $336 | $37 | $372 |
| Colorado | 17.17¢ | $319 | $61 | $381 |
| North Dakota | 13.31¢ | $359 | $31 | $390 |
| Indiana | 17.02¢ | $317 | $74 | $391 |
| Delaware | 18.70¢ | $296 | $96 | $391 |
| Montana | 15.57¢ | $362 | $36 | $398 |
| California | 29.75¢ | $249 | $152 | $401 |
| South Dakota | 15.15¢ | $352 | $50 | $403 |
| Iowa | 17.06¢ | $365 | $65 | $430 |
| Ohio | 19.38¢ | $361 | $79 | $440 |
| Maryland | 21.40¢ | $338 | $109 | $448 |
| Illinois | 19.32¢ | $377 | $79 | $456 |
| Minnesota | 17.20¢ | $432 | $48 | $480 |
| Pennsylvania | 21.77¢ | $405 | $89 | $494 |
| Wisconsin | 19.41¢ | $451 | $60 | $511 |
| New Jersey | 24.61¢ | $412 | $113 | $525 |
| District of Columbia | 25.98¢ | $387 | $146 | $533 |
| Connecticut | 24.51¢ | $502 | $81 | $583 |
| Michigan | 22.99¢ | $513 | $71 | $584 |
| Vermont | 23.84¢ | $577 | $55 | $631 |
| Hawaii | 47.18¢ | $22 | $627 | $649 |
| Rhode Island | 28.18¢ | $577 | $86 | $663 |
| New York | 28.65¢ | $586 | $95 | $682 |
| New Hampshire | 27.64¢ | $643 | $71 | $713 |
| Massachusetts | 30.48¢ | $652 | $94 | $746 |
| Alaska | 29.41¢ | $821 | $15 | $836 |
| Maine | 32.11¢ | $777 | $66 | $842 |
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-AA09NL*** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Fujitsu AOUH09KTAP1 | 9,000 | 33.5–33.5 | 14 | 142% | $303 (−$70) | Compare |
| Bryant 37MAHAQ09AA3 | 9,000 | 20.6–27.5 | 13.8 | 99% | $340 (−$33) | Compare |
| Bryant 37MARAQ09AA3 | 9,000 | 19.6–26 | 13.9 | 78% | $322 (−$51) | Compare |
| Senville SENA-09HF-OG | 9,000 | 21.4–27.4 | 12.5 | 96% | $363 (−$9) | Compare |
| Senville SENA/09HF/OQ | 9,000 | 20.2–28.1 | 12 | 90% | $380 (+$7) | Compare |
| Gree GWH09AVDXE-D6DNA1A/O | 9,100 | 22.3–30 | 11.2 | 108% | $357 (−$16) | Compare |
Full specifications
| Brand | Mitsubishi Electric |
| Outdoor model | SUZ-AA09NL*** |
| Certified by | Mitsubishi Electric U.S. HVAC Division |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 9,000 BTU/h |
| Nominal size | 1 ton |
| SEER2 (certified range) | 17.6 – 21.7 |
| EER2 (best) | 13.2 |
| HSPF2 (best) | 12.9 |
| Heating capacity @ 47°F | 12,000 BTU/h |
| Heating capacity @ 17°F | 7,900 BTU/h |
| Heating capacity @ 5°F | 6,400 BTU/h |
| COP @ 5°F | 3 |
| ENERGY STAR cold-climate | No |
| Certified indoor pairings | 11 |
| 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-AA09NL*** 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 $372 per year ($270 heating, $102 cooling). It ranges from about $215 in Louisiana to $842 in Maine.
Does the Mitsubishi Electric SUZ-AA09NL*** work in cold weather?
It is not ENERGY STAR cold-climate certified. It delivers 6,400 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-AA09NL***?
It is rated at 9,000 BTU/h of cooling, roughly 1 ton, and 12,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.