What is Coefficient of Performance (CoP)? Renewables expert explains this key heat pump calculation

white piggy bank next to model size heat pump
If your heat pump has a poor CoP you could be losing money (Image credit: Creative Bird/Getty Images)

If you're wondering how to choose heat pumps, or are looking to reassure yourself that your current heat pump is working well, you'll want to know what its Coefficient of Performance (CoP) is.

As the name suggests, it's a standard calculation used within the industry to assess how well the heat pump is working. 

David Hilton

David is a renewables and ventilation installer, with over 35 years experience, and is a long-standing contributor to Homebuilding and Renovating magazine. He is a member of the Gas Safe Register, has a Masters degree in Sustainable Architecture, and is an authority in sustainable building and energy efficiency, with extensive knowledge in building fabrics, heat recovery ventilation, renewables, and also conventional heating systems. He is also a speaker at the Homebuilding & Renovating Show. 

Passionate about healthy, efficient homes, he is director of Heat and Energy Ltd. He works with architects, builders, self builders and renovators, and designs and project manages the installation of ventilation and heating systems to achieve the most energy efficient and cost effective outcome for every home.