Air Source Heat Pump

Air Source Heat Pumps FAQs

How do they work?
ASHPs absorb heat from the outside air, in the same way that a fridge extracts heat from its inside. There are two main types of ASHP: an air-to-water system distributes heat via your wet central heating system, while an air-to-air system produces warm air which is circulated by fans to heat your premises.

Is my property suitable?
ASHPs are ideal for new build premises, or well-insulated existing properties. You need space outside for a unit to be fitted, either on a wall or on the ground, where there is a good flow of air. The building should be well insulated and draught-proofed for best results and you will see better savings if replacing an electricity or oil heating system.

Will it work in winter?
The pump can get heat from the air even when the temperature is as low as -20° C. If temperatures plummet even further, the heat pump’s internal auxiliary unit will add the additional heat requirement. ASHPs come fitted with an auto-defrost function, so they can continue to produce hot water and heating in all weathers.

Will I save money?
ASHP technology has an energy efficiency rating of A***, which is the highest level for heating and water production.
How much you can save will depend on what system you use now, as well as what you are replacing it with. ASHPs work best with underfloor heating or large radiators and are cheaper to run than oil-powered systems and older inefficient systems. Our experts will explain how to control the system so you can use it most effectively.

What is the Renewable Heat Incentive?
The Renewable Heat Incentive (RHI) is a Government incentive scheme to encourage the uptake of renewable heat technology among businesses and homeowners.

The Non-domestic RHI was launched first in November 2011 to provide payments to industry, businesses and public sector organisations. The Domestic RHI was launched in April 2014, and is open to homeowners, private landlords, social landlords and self-builders.

What could I earn?
RHI cash payments are made quarterly over the applicable term of the scheme. The amount you receive will depend on a number of factors – including the technology you install and the latest tariffs available for each technology.

How reliable is the technology?
Our guarantees last up to five years and systems are expected to operate for 20 years or more.

Do I need planning permission?
They may be considered as Permitted Development, in which case you will not need planning permission, but it is always a good idea to check with your local planning office and to obtain written confirmation regardless of whether it is permitted.

Will it be noisy?
ASHPs have reduced in noise levels significantly over the last few years. Carefully sited pumps should present no disturbance to you or your neighbours and we follow strict MCS noise emission standards, which require careful emission calculations.