Ask for a list of the equipment being installed and the old equipment being removed. Indoor work may be a large part of the project.
Electrical circuits, duct transitions and drainage should be identified in the scope. Have uncertain items explained before agreeing to the work.
An estimate based only on the outdoor cabinet can miss changes required inside the house.
The equipment price is only part of the quote
An outdoor unit installed beside the existing connections is a different scope from moving the unit across the house. Ask which connection route, base, electrical work and indoor changes the installation price covers. Photos help the contractor identify those differences before a site visit.
