Ask how equipment capacity is determined and whether existing airflow issues will be assessed.
Request the exact indoor and outdoor model numbers and an explanation of electrical or duct changes.
Before accepting, confirm what the quote excludes and how service after installation is handled.
Questions about the house
- What measurements support the proposed capacity?
- Were return-air, supply-air, filter, electrical, drainage and ventilation conditions checked?
- Which comfort complaint does each proposed change address?
- What existing equipment or ductwork will remain?
Questions about the written scope
- What are the exact indoor, outdoor, coil and control model numbers?
- Are permits, removal, disposal, electrical work and duct changes included?
- What could create a change order, and how will it be approved?
- Who registers equipment and submits any rebate paperwork?
Questions about responsibility
Ask who employs the installation crew, who supervises startup, what test results you receive, and whom you call afterward. Request the labor and manufacturer warranty terms in writing. If financing or a rebate changes the invoice, ask for the cash price and each adjustment as separate lines.