Our take in 30 seconds
Best for: mixed climates with occasional hard freezesStrengths
- 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 (15.2) and HSPF2 (8.9). 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 Lennox ML15KSPV-024-230A** at the three ENERGY STAR test temperatures (cooling capacity is 24,400 BTU/h for reference).
Retention at 17°F: 76% · at 5°F: 76%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $666 a year in Louisiana to $2,551 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¢ | $253 | $413 | $666 |
| Florida | 14.99¢ | $189 | $578 | $767 |
| Washington | 14.63¢ | $699 | $82 | $781 |
| Mississippi | 14.43¢ | $365 | $417 | $782 |
| Nevada | 12.72¢ | $429 | $368 | $796 |
| Tennessee | 13.42¢ | $528 | $280 | $808 |
| Arizona | 15.05¢ | $296 | $532 | $827 |
| Oregon | 15.92¢ | $716 | $115 | $831 |
| North Carolina | 14.95¢ | $546 | $312 | $858 |
| Kentucky | 13.80¢ | $620 | $244 | $864 |
| Arkansas | 14.37¢ | $525 | $346 | $871 |
| South Carolina | 15.76¢ | $487 | $405 | $892 |
| Georgia | 15.90¢ | $491 | $408 | $900 |
| Utah | 13.31¢ | $710 | $192 | $903 |
| Texas | 15.91¢ | $402 | $511 | $913 |
| Alabama | 16.33¢ | $505 | $419 | $924 |
| Idaho | 13.37¢ | $789 | $150 | $939 |
| Oklahoma | 14.82¢ | $583 | $357 | $940 |
| New Mexico | 16.51¢ | $696 | $265 | $961 |
| Nebraska | 13.54¢ | $799 | $196 | $994 |
| West Virginia | 16.31¢ | $825 | $209 | $1,034 |
| Missouri | 16.02¢ | $765 | $283 | $1,048 |
| Virginia | 17.64¢ | $743 | $311 | $1,055 |
| Kansas | 15.47¢ | $782 | $273 | $1,055 |
| Wyoming | 14.43¢ | $1,013 | $116 | $1,129 |
| Colorado | 17.17¢ | $965 | $193 | $1,158 |
| North Dakota | 13.31¢ | $1,084 | $96 | $1,180 |
| Indiana | 17.02¢ | $956 | $232 | $1,188 |
| Delaware | 18.70¢ | $893 | $300 | $1,193 |
| Montana | 15.57¢ | $1,093 | $112 | $1,206 |
| South Dakota | 15.15¢ | $1,064 | $158 | $1,222 |
| California | 29.75¢ | $752 | $478 | $1,230 |
| Iowa | 17.06¢ | $1,102 | $205 | $1,308 |
| Ohio | 19.38¢ | $1,089 | $249 | $1,338 |
| Maryland | 21.40¢ | $1,022 | $344 | $1,365 |
| Illinois | 19.32¢ | $1,140 | $248 | $1,388 |
| Minnesota | 17.20¢ | $1,304 | $152 | $1,456 |
| Pennsylvania | 21.77¢ | $1,223 | $280 | $1,503 |
| Wisconsin | 19.41¢ | $1,363 | $187 | $1,550 |
| New Jersey | 24.61¢ | $1,244 | $356 | $1,600 |
| District of Columbia | 25.98¢ | $1,168 | $459 | $1,626 |
| Connecticut | 24.51¢ | $1,515 | $256 | $1,770 |
| Michigan | 22.99¢ | $1,550 | $221 | $1,771 |
| Vermont | 23.84¢ | $1,741 | $172 | $1,913 |
| Rhode Island | 28.18¢ | $1,741 | $271 | $2,013 |
| Hawaii | 47.18¢ | $66 | $1,969 | $2,035 |
| New York | 28.65¢ | $1,771 | $299 | $2,069 |
| New Hampshire | 27.64¢ | $1,941 | $222 | $2,163 |
| Massachusetts | 30.48¢ | $1,969 | $294 | $2,263 |
| Alaska | 29.41¢ | $2,478 | $47 | $2,526 |
| Maine | 32.11¢ | $2,345 | $206 | $2,551 |
Similar-size alternatives
Other ducted split system units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Lennox ML15KSPV-024-230A** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Carrier 27VNA324A*030* | 23,800 | 18–23 | 10.5 | 82% | $1,044 (−$92) | Compare |
| Rheem RP19AY24AJVC | 22,800 | 20–21 | 10 | 81% | $925 (−$212) | Compare |
| Trane 5TWR7024A1 | 24,000 | 15.2–17.1 | 11 | 79% | $907 (−$230) | Compare |
| Trane 5TWX7024A1 | 24,000 | 15.2–18 | 11 | 79% | $907 (−$230) | Compare |
| Bryant 37MUHAQ24AA3 | 24,000 | 16–18.7 | 10.5 | 86% | $991 (−$145) | Compare |
| ACiQ ACIQ-24-HPD | 24,000 | 16–18.6 | 10.5 | 83% | $1,019 (−$118) | Compare |
Full specifications
| Brand | Lennox |
| Outdoor model | ML15KSPV-024-230A** |
| Certified by | Lennox Industries |
| Product type | Ducted split system |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 24,400 BTU/h |
| Nominal size | 2 tons |
| SEER2 (certified range) | 15.2 – 16.8 |
| EER2 (best) | 9.7 |
| HSPF2 (best) | 8.9 |
| Heating capacity @ 47°F | 25,000 BTU/h |
| Heating capacity @ 17°F | 18,900 BTU/h |
| Heating capacity @ 5°F | 18,900 BTU/h |
| COP @ 5°F | 1.9 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 110 |
| Latest certification | 2026-07 |
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 Lennox ML15KSPV-024-230A** 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 $1,137 per year ($816 heating, $321 cooling). It ranges from about $666 in Louisiana to $2,551 in Maine.
Does the Lennox ML15KSPV-024-230A** work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 18,900 BTU/h at 5°F, 76% of its 47°F capacity, with a COP of 1.9 at 5°F.
What size is the Lennox ML15KSPV-024-230A**?
It is rated at 24,400 BTU/h of cooling, roughly 2 tons, and 25,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.