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 10.8) beats 90% of models
- Cooling efficiency up to SEER2 22.8, better than 83% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
Good to know
- Efficiency depends on the indoor unit: SEER2 ranges 17–22.8, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (17) and HSPF2 (10.8). 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 PUZ-AK24NLHZ2*** at the three ENERGY STAR test temperatures (cooling capacity is 24,000 BTU/h for reference).
Retention at 17°F: 80% · 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 $580 a year in Louisiana to $2,191 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¢ | $217 | $363 | $580 |
| Florida | 14.99¢ | $162 | $508 | $670 |
| Washington | 14.63¢ | $599 | $72 | $671 |
| Mississippi | 14.43¢ | $313 | $367 | $679 |
| Nevada | 12.72¢ | $367 | $323 | $691 |
| Tennessee | 13.42¢ | $452 | $246 | $699 |
| Oregon | 15.92¢ | $613 | $101 | $714 |
| Arizona | 15.05¢ | $254 | $467 | $721 |
| North Carolina | 14.95¢ | $468 | $274 | $742 |
| Kentucky | 13.80¢ | $532 | $214 | $746 |
| Arkansas | 14.37¢ | $450 | $304 | $754 |
| South Carolina | 15.76¢ | $417 | $356 | $773 |
| Utah | 13.31¢ | $609 | $169 | $778 |
| Georgia | 15.90¢ | $421 | $359 | $780 |
| Texas | 15.91¢ | $345 | $449 | $794 |
| Alabama | 16.33¢ | $432 | $369 | $801 |
| Idaho | 13.37¢ | $676 | $132 | $808 |
| Oklahoma | 14.82¢ | $499 | $314 | $813 |
| New Mexico | 16.51¢ | $596 | $233 | $829 |
| Nebraska | 13.54¢ | $685 | $172 | $857 |
| West Virginia | 16.31¢ | $707 | $184 | $891 |
| Missouri | 16.02¢ | $656 | $249 | $904 |
| Kansas | 15.47¢ | $670 | $240 | $911 |
| Virginia | 17.64¢ | $637 | $274 | $911 |
| Wyoming | 14.43¢ | $868 | $102 | $970 |
| Colorado | 17.17¢ | $827 | $170 | $996 |
| North Dakota | 13.31¢ | $929 | $85 | $1,014 |
| Indiana | 17.02¢ | $819 | $204 | $1,024 |
| Delaware | 18.70¢ | $765 | $264 | $1,029 |
| Montana | 15.57¢ | $937 | $99 | $1,036 |
| South Dakota | 15.15¢ | $912 | $139 | $1,051 |
| California | 29.75¢ | $645 | $420 | $1,065 |
| Iowa | 17.06¢ | $945 | $181 | $1,125 |
| Ohio | 19.38¢ | $933 | $219 | $1,152 |
| Maryland | 21.40¢ | $876 | $302 | $1,178 |
| Illinois | 19.32¢ | $977 | $218 | $1,195 |
| Minnesota | 17.20¢ | $1,118 | $134 | $1,252 |
| Pennsylvania | 21.77¢ | $1,048 | $246 | $1,294 |
| Wisconsin | 19.41¢ | $1,168 | $164 | $1,333 |
| New Jersey | 24.61¢ | $1,066 | $313 | $1,379 |
| District of Columbia | 25.98¢ | $1,001 | $403 | $1,404 |
| Connecticut | 24.51¢ | $1,298 | $225 | $1,523 |
| Michigan | 22.99¢ | $1,328 | $195 | $1,523 |
| Vermont | 23.84¢ | $1,492 | $151 | $1,644 |
| Rhode Island | 28.18¢ | $1,492 | $239 | $1,731 |
| New York | 28.65¢ | $1,517 | $263 | $1,780 |
| Hawaii | 47.18¢ | $57 | $1,732 | $1,789 |
| New Hampshire | 27.64¢ | $1,664 | $195 | $1,859 |
| Massachusetts | 30.48¢ | $1,688 | $258 | $1,946 |
| Alaska | 29.41¢ | $2,124 | $42 | $2,166 |
| Maine | 32.11¢ | $2,010 | $181 | $2,191 |
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 PUZ-AK24NLHZ2*** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Senville SENA-24HF-OG | 24,000 | 19–21 | 13.5 | 83% | $876 (−$105) | Compare |
| Senville SENA/24HF/OQ | 24,000 | 19.2–21.5 | 11.5 | 93% | $982 (+$1) | Compare |
| Pioneer YN024GMFI22RPE | 24,000 | 19–21.5 | 11.2 | 80% | $901 (−$81) | Compare |
| Hisense AOU-24U3T25U | 24,000 | 19–20 | 10.5 | 100% | $916 (−$65) | Compare |
| Pioneer YN024GLSI24RPG | 23,000 | 19–23 | 10.4 | 76% | $940 (−$41) | Compare |
| Gree GWH18AVEXF-D6DNA1A/O | 21,000 | 20–27.5 | 10 | 86% | $820 (−$162) | Compare |
Full specifications
| Brand | Mitsubishi Electric |
| Outdoor model | PUZ-AK24NLHZ2*** |
| Certified by | Mitsubishi Electric U.S. HVAC Division |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 24,000 BTU/h |
| Nominal size | 2 tons |
| SEER2 (certified range) | 17 – 22.8 |
| EER2 (best) | 16.1 |
| HSPF2 (best) | 10.8 |
| Heating capacity @ 47°F | 26,000 BTU/h |
| Heating capacity @ 17°F | 20,800 BTU/h |
| Heating capacity @ 5°F | 26,000 BTU/h |
| COP @ 5°F | 2.2 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 9 |
| Latest certification | 2026-08 |
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 PUZ-AK24NLHZ2*** 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 $982 per year ($699 heating, $282 cooling). It ranges from about $580 in Louisiana to $2,191 in Maine.
Does the Mitsubishi Electric PUZ-AK24NLHZ2*** work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 26,000 BTU/h at 5°F, 100% of its 47°F capacity, with a COP of 2.2 at 5°F.
What size is the Mitsubishi Electric PUZ-AK24NLHZ2***?
It is rated at 24,000 BTU/h of cooling, roughly 2 tons, and 26,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.