While the average cost of an HVAC inspection falls around $320, you’ll find a great price disparity depending on the type of unit being inspected, with prices ranging anywhere from $65 to $500.
Furnace costs typically range from $2,800 to $6,780, but most homeowners should expect to spend around $4,670 on average ... on its heating capacity, measured in British Thermal Units (BTUs).
See this table for information on the average ... AC unit may not be as practical. Before meeting with a prospective pro, get ready with a list of questions to ask your HVAC tech.