Manual J

Can a Heat Pump Use Your Existing Ductwork? What to Check Before You Replace Anything

Many homeowners are told they need new ducts for a heat pump. Often they don't. Here's why heat pumps are…

Heat Pump Sizing Guide: Tons, BTU, Manual J, and Why Bigger Is Not Better

Tons, BTU, Manual J, and climate zones explained, plus a tonnage-by-square-footage table and why sizing for heating matters in cold…