Home equipment worksheet

Normalize the quote before choosing the system.

Estimate ownership cost using the same capacity, efficiency, use, electricity, and maintenance assumptions.

Home decision tool

Mini-split ownership estimator

Normalize equipment and installation quotes with one transparent operating-cost assumption.

Equipment quote$Installation quote$Cooling capacityBTU/hSEER2 planning ratingEquivalent cooling hours / yearElectricity price / kWh$Maintenance / year$Ownership years

Planning annual energy1080 kWh

Planning annual electricity$194

10-year ownership cost$10,744

Monthly ownership equivalent$90

This simplified cooling estimate is for quote comparison—not HVAC sizing. Exact pairings, climate, load, cycling, heating use, and installation quality materially affect results.

How the calculator works

Mini-Split Cost Calculator: method and assumptions

Compare mini-split equipment and installation quotes using the same electricity, efficiency, maintenance, and ownership assumptions.

Planning formulaOwnership cost = equipment + installation + estimated electricity + maintenance over the selected period.

What the result includes

Upfront equipment and installation cost
Estimated annual electricity use
Maintenance over the ownership period
A normalized total for comparing two quotes

Normalize the system size

Compare quotes designed for the same load and zones. A lower bid may represent less capacity or a different installation scope.

Use local electricity cost

Enter your utility rate and realistic annual operating hours. Climate, setpoint, insulation, and part-load operation affect actual use.

Keep installation scope visible

Confirm line-set length, electrical work, condensate handling, mounting, permits, controls, warranty, and commissioning in each quote.

Questions before you decide

Calculator FAQ

How much does a mini-split cost?

Total cost depends on capacity, number of zones, equipment tier, electrical and line-set work, access, permits, and contractor scope. Compare complete written quotes.

Is this a load calculation?

No. It is an ownership-cost estimate. Capacity should be confirmed with a room-by-room load calculation and exact matched-system specifications.