HeatPumpWise

Size it, price it, and see your real savings in 60 seconds — built on US DOE & ENERGY STAR methodology, with no signup and no sales pitch.

Buying a heat pump comes down to three questions: what size do I need, what will it cost, and will it actually save me money. Get the first one wrong and everything else suffers — an oversized unit short-cycles and wears out early, while an undersized one can’t keep your home warm on the coldest nights.

The right size is set by your home’s heat loss, not a number someone gave you at a barbecue. As a starting point, capacity scales with floor area and climate: a 1,800 sq ft home needs roughly 3–3.5 tons in a cold climate but only ~2.5 tons in a mild one. Insulation, ceiling height and air-sealing move that number up or down.