What is an air source heat pump?

An air source heat pump extracts thermal energy (heat) from the outside air and converts it into heating and hot water for your home. These pumps are designed to operate efficiently even in cold temperatures and are suitable for various types of homes, from small apartments to large detached houses. While air source heat pumps require electricity to operate, 75% of the energy needed is sourced from the outside air, making them an environmentally friendly option. This means that 75% of the energy used is from a renewable source, reducing emissions and CO2 impact.

Air source heat pumps are typically installed outside the property and operate quietly during use. However, they require a solid base or structurally secure wall for installation. A qualified renewables installer can assess whether your home is suitable for an air source heat pump.

Advantages of using ambient air include:

• Providing heating and hot water for your home
• Suitable for properties with limited outside space
• Small and compact
• Suitable for various property types
• Lower investment costs compared to other heat pumps
• Compatible with modern low-energy or well-insulated properties
• Quiet operation
• Works efficiently in cold temperatures
• Compatible with radiators and underfloor heating
• Requires minimal ongoing maintenance
• No fuel deliveries or on-site fuel storage

• Do you have an outside space for the heat pump to be installed? Apartments often have air source heat pumps installed on a structurally supporting balcony, or outside wall if this is permitted – it is best to speak to a reputable installer for advice on whether this is a viable option for you
• Is your home well insulated? Generating heating and hot water sustainably is only beneficial if you have improved the efficiency of your home. Each property is unique, but it is important to understand what other measures can be done to reduce heat being lost in your home. Looking at loft insulation and whether you have double glazing windows will be a good start, but consult a professional for further guidance on what is feasible for your home
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• Are you looking to replace a heating system, or for new build homes, is this the first heating system to be installed? Replacing an ageing heating system will deliver faster benefits due to the improvements in efficiency. However, for new build homes, it is worth discussing with your installer how your heat pump system will work throughout your home – this includes choosing underfloor heating or radiators, as well as suitable controls to operate it