L
#45
Lennox M series (MPC018S4S-1P)
Best for: Official 18,000 Btu/h official cooling, 23.5 official SEER2
5.4/10
What we like
- Official ENERGY STAR record lists 23.5 SEER2.
- Official ENERGY STAR record lists 10.7 HSPF2.
Watch out for
- Official ENERGY STAR record does not list a cold-climate designation.
Score breakdown
| Official SEER2 | 23.5 |
|---|---|
| Official HSPF2 | 10.7 |
| Official EER2 | 12.4 |
| Official COP at 5°F | 2.02 |
| Official ENERGY STAR unique ID | 2,469,838 |
| Official outdoor unit model number | MPC018S4S-1P |
| Official indoor unit model number | MWMC018S4-1P |
| Official series name | M series |
| Official product type | HP - Mini or Multi Split |
| Official cooling capacity | 18,000 Btu/h |
| Official heating capacity at 47°F | 19,000 Btu/h |
| Official heating capacity at 17°F | 14,900 Btu/h |
| Official heating capacity at 5°F | 11,300 Btu/h |
| Official cold-climate designation | No |
| Official ENERGY STAR Most Efficient 2025 | Yes |
| Official refrigerant type | R-410A |
| Official AHRI reference number | 207683499 |
| Official indoor unit brand | LENNOX |
| Other official indoor models listed with this outdoor unit | MWMC018S4-P, MWMC018S4, MCFB018S4-2P, MCFB018S4, MCFB018S4-P |
| Official ENERGY STAR date certified | 04/17/2026 |
| Source-data note | The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups. |
| Price | Check price |