How Heat Pumps Pull Heat from Freezing Airheat pump

How can air below freezing help warm a house? Follow the refrigerant through a heat pump, see what the compressor changes, and account for every unit of energy. This is a mechanism explainer, not equipment, installation or purchasing advice. Temperatures and the COP example are illustrative; actual performance depends on the equipment and operating conditions. CHAPTERS 00:00 The cold-air puzzle 00:24 Cold is a comparison 01:14 Follow the refrigerant 03:57 Where the extra heat comes from 04:51 What changes in colder weather 05:50 The same idea, reversed 06:18 The answer SOURCES & FURTHER READING Australian Government: Heating and cooling https://www.energy.gov.au/households/heati... Carrier: What is a heat pump and how does it work? https://www.carrier.com/us/en/residential/... ENERGY STAR: Air-source heat pumps https://www.energystar.gov/products/air_so... ENERGY STAR: Heat pump key product criteria https://www.energystar.gov/products/air_so... IEA: How a heat pump works https://www.iea.org/reports/the-future-of-... OpenStax University Physics 2: Refrigerators and Heat Pumps https://openstax.org/books/university-phys... PRODUCTION Original script and animated diagrams created during an attended Codex production session. Synthetic narration supplied by HeyGen. Original music composed with AI assistance and synthesized locally; no stock recording or competitor footage used. Thumbnail created with AI assistance. Sources and calculations checked during production. No sponsorship or affiliate links in this video. Subscribe to Heat & Work for more explanations of energy inside everyday technology.