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
- Efficiency depends on the indoor unit: SEER2 ranges 15.2–18.3, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (15.2) and HSPF2 (9.6). 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 EL18KSLV-060-230A** at the three ENERGY STAR test temperatures (cooling capacity is 55,500 BTU/h for reference).
Retention at 17°F: 80% · at 5°F: 80%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $1,470 a year in Louisiana to $5,382 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¢ | $530 | $940 | $1,470 |
| Washington | 14.63¢ | $1,464 | $187 | $1,651 |
| Florida | 14.99¢ | $397 | $1,314 | $1,711 |
| Mississippi | 14.43¢ | $764 | $948 | $1,713 |
| Nevada | 12.72¢ | $898 | $836 | $1,734 |
| Tennessee | 13.42¢ | $1,106 | $637 | $1,743 |
| Oregon | 15.92¢ | $1,499 | $262 | $1,761 |
| Arizona | 15.05¢ | $620 | $1,209 | $1,829 |
| North Carolina | 14.95¢ | $1,144 | $710 | $1,853 |
| Kentucky | 13.80¢ | $1,300 | $554 | $1,854 |
| Arkansas | 14.37¢ | $1,099 | $787 | $1,886 |
| Utah | 13.31¢ | $1,488 | $437 | $1,926 |
| South Carolina | 15.76¢ | $1,020 | $921 | $1,941 |
| Georgia | 15.90¢ | $1,029 | $929 | $1,958 |
| Idaho | 13.37¢ | $1,652 | $342 | $1,994 |
| Texas | 15.91¢ | $843 | $1,162 | $2,005 |
| Alabama | 16.33¢ | $1,057 | $954 | $2,011 |
| Oklahoma | 14.82¢ | $1,221 | $812 | $2,033 |
| New Mexico | 16.51¢ | $1,458 | $603 | $2,060 |
| Nebraska | 13.54¢ | $1,673 | $445 | $2,118 |
| West Virginia | 16.31¢ | $1,728 | $476 | $2,204 |
| Missouri | 16.02¢ | $1,603 | $643 | $2,246 |
| Kansas | 15.47¢ | $1,639 | $621 | $2,260 |
| Virginia | 17.64¢ | $1,557 | $709 | $2,266 |
| Wyoming | 14.43¢ | $2,123 | $263 | $2,387 |
| Colorado | 17.17¢ | $2,021 | $439 | $2,460 |
| North Dakota | 13.31¢ | $2,272 | $219 | $2,490 |
| Indiana | 17.02¢ | $2,003 | $528 | $2,532 |
| Montana | 15.57¢ | $2,291 | $256 | $2,547 |
| Delaware | 18.70¢ | $1,871 | $683 | $2,554 |
| South Dakota | 15.15¢ | $2,229 | $360 | $2,589 |
| California | 29.75¢ | $1,576 | $1,086 | $2,662 |
| Iowa | 17.06¢ | $2,309 | $467 | $2,777 |
| Ohio | 19.38¢ | $2,281 | $566 | $2,847 |
| Maryland | 21.40¢ | $2,141 | $781 | $2,922 |
| Illinois | 19.32¢ | $2,388 | $564 | $2,952 |
| Minnesota | 17.20¢ | $2,733 | $345 | $3,079 |
| Pennsylvania | 21.77¢ | $2,563 | $636 | $3,198 |
| Wisconsin | 19.41¢ | $2,856 | $425 | $3,281 |
| New Jersey | 24.61¢ | $2,607 | $809 | $3,416 |
| District of Columbia | 25.98¢ | $2,446 | $1,043 | $3,490 |
| Michigan | 22.99¢ | $3,247 | $504 | $3,751 |
| Connecticut | 24.51¢ | $3,174 | $582 | $3,755 |
| Vermont | 23.84¢ | $3,648 | $392 | $4,040 |
| Rhode Island | 28.18¢ | $3,649 | $617 | $4,266 |
| New York | 28.65¢ | $3,710 | $680 | $4,390 |
| New Hampshire | 27.64¢ | $4,067 | $505 | $4,571 |
| Hawaii | 47.18¢ | $139 | $4,479 | $4,618 |
| Massachusetts | 30.48¢ | $4,126 | $668 | $4,794 |
| Alaska | 29.41¢ | $5,193 | $107 | $5,300 |
| Maine | 32.11¢ | $4,913 | $469 | $5,382 |
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 EL18KSLV-060-230A** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Gree GUD60W2/NHE-D(U) | 53,000 | 16–19 | 10.5 | 100% | $2,156 (−$283) | Compare |
| Rheem RD18AY60AJVC | 52,000 | 16–18 | 10 | 66% | $2,393 (−$47) | Compare |
| Carrier 27VPA948A*030* | 49,500 | 15.2–19 | 10 | 75% | $2,249 (−$191) | Compare |
| Bosch BOVA-60MTB-M19E | 53,500 | 15.2–19 | 10 | 100% | $2,301 (−$138) | Compare |
| LG KUSXA482A | 48,000 | 15.9–19 | 9.6 | 92% | $2,116 (−$323) | Compare |
| Rheem RP17AY60AJVC | 57,000 | 16–17 | 9.5 | 80% | $2,455 (+$16) | Compare |
Full specifications
| Brand | Lennox |
| Outdoor model | EL18KSLV-060-230A** |
| Certified by | Lennox Industries |
| Product type | Ducted split system |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 55,500 BTU/h |
| Nominal size | 4.5 tons |
| SEER2 (certified range) | 15.2 – 18.3 |
| EER2 (best) | 11.7 |
| HSPF2 (best) | 9.6 |
| Heating capacity @ 47°F | 56,500 BTU/h |
| Heating capacity @ 17°F | 45,000 BTU/h |
| Heating capacity @ 5°F | 45,000 BTU/h |
| COP @ 5°F | 1.95 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 353 |
| Latest certification | 2026-09 |
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 EL18KSLV-060-230A** 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 $2,439 per year ($1,710 heating, $729 cooling). It ranges from about $1,470 in Louisiana to $5,382 in Maine.
Does the Lennox EL18KSLV-060-230A** work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 45,000 BTU/h at 5°F, 80% of its 47°F capacity, with a COP of 1.95 at 5°F.
What size is the Lennox EL18KSLV-060-230A**?
It is rated at 55,500 BTU/h of cooling, roughly 4.5 tons, and 56,500 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.