Our take in 30 seconds
Best for: cold and very cold climatesStrengths
- Keeps 100% of its heat at 5°F, so backup heat rarely runs
- Heating efficiency (HSPF2 10) beats 77% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
- Uses newer, lower-impact R-454B refrigerant
Good to know
- No notable drawbacks in the certified data.
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (15.8) 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-AA09NLHZ*** at the three ENERGY STAR test temperatures (cooling capacity is 9,000 BTU/h for reference).
Retention at 17°F: 62% · at 5°F: 100%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $255 a year in Louisiana to $1,076 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¢ | $108 | $147 | $255 |
| Florida | 14.99¢ | $81 | $205 | $286 |
| Mississippi | 14.43¢ | $156 | $148 | $304 |
| Nevada | 12.72¢ | $183 | $130 | $314 |
| Arizona | 15.05¢ | $126 | $189 | $315 |
| Tennessee | 13.42¢ | $225 | $99 | $325 |
| Washington | 14.63¢ | $298 | $29 | $328 |
| North Carolina | 14.95¢ | $233 | $111 | $344 |
| Oregon | 15.92¢ | $306 | $41 | $346 |
| Arkansas | 14.37¢ | $224 | $123 | $347 |
| Kentucky | 13.80¢ | $265 | $86 | $351 |
| South Carolina | 15.76¢ | $208 | $144 | $352 |
| Texas | 15.91¢ | $172 | $181 | $353 |
| Georgia | 15.90¢ | $210 | $145 | $355 |
| Alabama | 16.33¢ | $216 | $149 | $364 |
| Utah | 13.31¢ | $303 | $68 | $372 |
| Oklahoma | 14.82¢ | $249 | $127 | $376 |
| Idaho | 13.37¢ | $337 | $53 | $390 |
| New Mexico | 16.51¢ | $297 | $94 | $391 |
| Nebraska | 13.54¢ | $341 | $69 | $411 |
| West Virginia | 16.31¢ | $352 | $74 | $427 |
| Missouri | 16.02¢ | $327 | $100 | $427 |
| Virginia | 17.64¢ | $318 | $111 | $428 |
| Kansas | 15.47¢ | $334 | $97 | $431 |
| Wyoming | 14.43¢ | $433 | $41 | $474 |
| Colorado | 17.17¢ | $412 | $68 | $481 |
| Delaware | 18.70¢ | $381 | $107 | $488 |
| California | 29.75¢ | $321 | $169 | $491 |
| Indiana | 17.02¢ | $408 | $82 | $491 |
| North Dakota | 13.31¢ | $463 | $34 | $497 |
| Montana | 15.57¢ | $467 | $40 | $507 |
| South Dakota | 15.15¢ | $454 | $56 | $511 |
| Iowa | 17.06¢ | $471 | $73 | $544 |
| Ohio | 19.38¢ | $465 | $88 | $553 |
| Maryland | 21.40¢ | $437 | $122 | $558 |
| Illinois | 19.32¢ | $487 | $88 | $575 |
| Minnesota | 17.20¢ | $557 | $54 | $611 |
| Pennsylvania | 21.77¢ | $522 | $99 | $622 |
| Wisconsin | 19.41¢ | $582 | $66 | $649 |
| New Jersey | 24.61¢ | $532 | $126 | $658 |
| District of Columbia | 25.98¢ | $499 | $163 | $662 |
| Hawaii | 47.18¢ | $28 | $699 | $727 |
| Connecticut | 24.51¢ | $647 | $91 | $738 |
| Michigan | 22.99¢ | $662 | $79 | $741 |
| Vermont | 23.84¢ | $744 | $61 | $805 |
| Rhode Island | 28.18¢ | $744 | $96 | $840 |
| New York | 28.65¢ | $756 | $106 | $862 |
| New Hampshire | 27.64¢ | $829 | $79 | $908 |
| Massachusetts | 30.48¢ | $841 | $104 | $945 |
| Maine | 32.11¢ | $1,002 | $73 | $1,075 |
| Alaska | 29.41¢ | $1,059 | $17 | $1,076 |
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-AA09NLHZ*** 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 (−$160) | Compare |
| Bryant 37MAHAQ09AA3 | 9,000 | 20.6–27.5 | 13.8 | 99% | $340 (−$123) | Compare |
| Bryant 37MARAQ09AA3 | 9,000 | 19.6–26 | 13.9 | 78% | $322 (−$141) | Compare |
| Senville SENA-09HF-OG | 9,000 | 21.4–27.4 | 12.5 | 96% | $363 (−$100) | Compare |
| Mitsubishi Electric SUZ-AA09NL*** | 9,000 | 17.6–21.7 | 12.9 | 53% | $372 (−$90) | Compare |
| Senville SENA/09HF/OQ | 9,000 | 20.2–28.1 | 12 | 90% | $380 (−$83) | Compare |
Full specifications
| Brand | Mitsubishi Electric |
| Outdoor model | SUZ-AA09NLHZ*** |
| 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) | 15.8 – 17.4 |
| EER2 (best) | 12.6 |
| HSPF2 (best) | 10 |
| Heating capacity @ 47°F | 12,000 BTU/h |
| Heating capacity @ 17°F | 7,500 BTU/h |
| Heating capacity @ 5°F | 12,000 BTU/h |
| COP @ 5°F | 2 |
| ENERGY STAR cold-climate | Yes |
| 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-AA09NLHZ*** 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 $462 per year ($349 heating, $114 cooling). It ranges from about $255 in Louisiana to $1,076 in Alaska.
Does the Mitsubishi Electric SUZ-AA09NLHZ*** work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 12,000 BTU/h at 5°F, 100% of its 47°F capacity, with a COP of 2 at 5°F.
What size is the Mitsubishi Electric SUZ-AA09NLHZ***?
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.