Many technicians believe the only way to verify refrigerant charge on a heat pump in heating mode is to recover the existing refrigerant charge and weigh in the factory charge. However, most ...

Traditional air-source heat pumps can provide reliable heating when outdoor temperatures are moderately cold. However, once the weather reaches subzero temperatures, heat pumps suffer a drastic loss ...

Rebecca Brill is a writer whose essays have appeared in The Paris Review Daily, VICE, Literary Hub, and elsewhere. She runs the Susan Sontag's Diary and the Sylvia Plath's Food Diary accounts on ...

A British-Swedish research team has reviewed all models for designing and simulating solar-powered heat pumps systems of various complexities. Based on this work, the scientists proposed a new method ...

Karen is an energy efficiency and sustainability specialist with 20+ years experience. She exposes unsustainable businesses, products, and processes, and looks for ways we can all buy better - for ...