https://teranautics.com/ Educational articles about home energy costs: heat pumps and solar. en-us Thu, 15 Oct 2026 00:00:00 GMT https://teranautics.com/how-a-heat-pump-works/ https://teranautics.com/how-a-heat-pump-works/ Thu, 15 Oct 2026 00:00:00 GMT The refrigeration cycle, COP versus seasonal ratings, and what outdoor temperature, insulation, sizing and electricity prices do to running costs. Sourced to US government publications.