Choose indoor positions: Discuss the walls, ceilings and usable space available for indoor equipment. Furniture, doorways and how air moves between rooms all belong in that conversation. A convenient mounting spot is only useful if it serves the intended area.
Map the connections: Refrigerant lines, wiring and condensate drainage need workable routes. Ask where penetrations and visible line covers will be located, and whether any opening or restoration of finishes falls within the quote.
Review the outdoor position: The proposed location must satisfy the selected equipment's requirements for clearance, mounting and access. Share plans for landscaping, a walkway or other work that could affect that area.
Check winter operation: For a Detroit project, cold-weather output should be compared with the calculated heating requirement. If additional heat will be used, the design needs to state its role and explain how the household will operate the combined arrangement.