The Outdoor Unit Sets the Floor
A heat pump installation starts with a load calculation, not a model number. The installer measures the house, checks the windows and insulation, and sizes the unit to match. Get that wrong and the price moves either way: too small and it struggles, too big and you paid for capacity the house can't use. Everything after that, the line set, the pad, the electrical work, follows from what that calculation says the house actually needs.








