Guides A-Z

This guide describes sizing methods for cold climate heat pumps. It is assumed that the reader already has a basic understanding of HVAC systems and heating and cooling load calculations. Consider reading the “ Traditional Split Heat Pumps” and “ Ductless (Mini-Split) Heat Pumps” guides for...

Home owners who use an HVAC system with a central air handler fan can realize significant energy savings by using a fan with an electronically commutated (ECM) motor (see Figure 1). Savings will be even larger for homeowners who run the HVAC fan continuously or frequently to filter the air or to...