This technical primer breaks down defrost control board operation, key components, and practical troubleshooting steps every ...

If defrost isn’t working, something in the chain is broken. This step-by-step approach shows you exactly where to look and what to test.

Johnson Controls-Hitachi Air Conditioning has launched a new residential heat pump system combining an air source heat pump (ASHP) and a gas furnace. “When temperatures are extremely low, most heat ...

Heat pumps are emerging as an efficient solution for space heating and air conditioning, especially when used in variable refrigerant flow systems. They can match the most efficient air conditioning ...

Karen has worked for more than 20 years in the energy efficiency and sustainability sector. At Which?, Karen cuts through the jargon to uncover the environmental issues that matter most to consumers ...

Homeowners looking for an energy-efficient alternative to traditional air conditioners in the spring and summer months (and furnaces in the winter) might want to invest in a heat pump. It's a type of ...