What changes the final price?
A contractor quote combines equipment, labor, electrical work, controls, permits, and commissioning. The range above is a planning benchmark—not a guaranteed bid.
HomeCostGrid classifies Montana as a cold planning climate and uses an indicative residential electricity input of $0.13/kWh. Your actual utility rate, home load, and contractor scope may differ.
Home and system sizeLoad calculation, layout, and number of zones.
Electrical readinessPanel capacity, circuits, disconnects, and wiring distance.
DistributionExisting ductwork, duct repair, or multiple ductless heads.
Cold-climate performanceEquipment selection and backup-heat strategy.
2026 incentive checkpoint
Incentives are address- and utility-specific. Start with the ENERGY STAR ZIP-code rebate finder, then confirm program eligibility, equipment requirements, and any pre-approval directly with your electric utility before signing a contract.
Three quotes should answer the same questions
- What heating load did the contractor calculate?
- Is the exact outdoor unit cold-climate rated?
- Does the price include electrical work and permits?
- What happens at the design low temperature?
- Which rebates are included, and who receives them?
- What labor and equipment warranties are written into the proposal?