The system featured a solar-thermal collector, a thermal storage tank, an air-source heat pump, a sand-filled thermal storage floor, and water pumps.

Forbes contributors publish independent expert analyses and insights. Nick Nuttall is a journalist and presenter for We Don’t Have Time.

Carrier, a US-based heating solutions provider, has launched a new series of air-to-water heat pumps for residential buildings. “This marks the company’s first domestic hot water solution ...