This is the fifth in a series of Heat Pump 101 videos from instructor and author, John Siegenthaler, P.E.. “Natural vs. Artificial Heat Transfer Processes” was the previous lesson in the series. You can enroll in John’s Heat Pump 101 course for free to learn the very basics of heat pumps in less than an hour.

How does a heat pump keep a building warm when the outdoor air is really cold?

A lot of people don’t trust that a heat pump could keep their house warm in the winter. It’s a really fair concern because pulling heat from cold outdoor air isn’t a natural process. So how does a heat pump do that?

The next video in this series covers four common types of heat pump configurations. If you want to see that video now or jump ahead to the others, you can find them all in John Siegenthaler’s free Heat Pump 101 course.