The U.S. heating specialist has agreed to invest an unspecified sum in Dutch startup Blueheart Energy, which is developing a 6 kW heat pump that works on acoustic waves and is able to produce both ...

Heat-pump technology has existed for a long time, but over the past 30 years, you would've seen this term get used more and more. In a nutshell, heat pumps are a highly efficient way of moving heat ...