Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, what estimate his Department has made of the average cost to install a heat source pump to replace an existing gas boiler in a standard three bedroom semi-detached home.

Based on the best available evidence, the Government estimates the current total cost of installing an air source heat pump to replace a gas boiler in an average three-bedroom semi-detached house to be around £10,500. However, as the market develops, heat pump installation costs are expected to fall. In the Heat and Buildings Strategy, the Government set an ambition to reduce the upfront costs of installing a heat pump by 25-50% by 2025.