IC Installed Cost

LENNOX heat pump

MMLD018S6S-1P

5 tracked programs list at least one exact combination.

Eligibility belongs to the complete outdoor-and-indoor combination—not just this outdoor model. Check the AHRI reference and indoor model in the table before relying on a result.

8documented combinations
17–23.8SEER2 range
8.5–9.6HSPF2 range
1.8COP at 5°F range

Program-list matches

Certified combinations

Showing 1–8 of 8. Performance values are combination-specific.

AHRI referenceIndoor unitSEER2HSPF2COP at 5°FCapacity at 5°FOfficial-list match
215810024 M33D018S6-1P 23.8 9.6 1.8 20,000 Btu/h Efficiency Maine Residential Heat Pump RebatesEnergize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
215810027 M22D018S6-1P 20.5 9.5 1.8 20,000 Btu/h Efficiency Maine Residential Heat Pump RebatesEnergize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
218214255 MWXD018S6-1P 20.5 9.5 1.8 19,000 Btu/h Efficiency Maine Residential Heat Pump RebatesEnergize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
215810023 M1WD018S6-1P 20 9.5 1.8 20,000 Btu/h Efficiency Maine Residential Heat Pump RebatesEnergize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
216581330 MFMD018S6-1P 20 9.5 1.8 18,100 Btu/h Efficiency Maine Residential Heat Pump RebatesEnergize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
215810025 MDDD018S6-1P 18.3 8.9 1.8 20,000 Btu/h Energize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
216581331 MMD018S6-1P 18 8.5 1.8 19,000 Btu/h Energize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
215810026 MMDD018S6-1P 17 9 1.8 20,000 Btu/h Energize Connecticut Heat Pump ProgramFocus on Energy Heat Pump Instant DiscountsMass Save Heat Pump ProgramXcel Energy Colorado Heat Pump Rebates
What this result does not prove

A product-list match does not establish household, property, contractor, sizing, weatherization or remaining-funding eligibility. Installed Cost never states a rebate dollar amount. Follow the official program link for the current application rules and calculator.

Specifications reflect source records last updated Jul 29, 2026. ENERGY STAR is a registered certification mark; its name is used only to identify the federal source. Installed Cost is not endorsed by ENERGY STAR or AHRI.