Capacity and equipment
Load, efficiency, staging, cold-weather capability, filtration, and fuel or electrical requirements shape equipment selection.
Distribution and access
Ducts, returns, piping, radiators, line sets, vents, condensate, finished walls, roofs, attics, and tight basements add scope.
Controls and completion
Zoning, thermostats, permits, removal, testing, commissioning, and warranties should be visible in the quote.
Planning note
Use site-specific written proposals. Any early range is educational, not an offer.