What is an Air Source Heat Pump?
An air source heat pump (ASHP) is a renewable heating system that extracts heat from the outside air, even in cold weather, to warm your home and provide hot water. It works similarly to a fridge but in reverse, transferring heat into your property.
How does an air source heat pump work?
An air source heat pumpworks by using a refrigerant to absorb heat from the outside air. It compresses the refrigerant to increase the temperature and then transfers that heat to your home’s heating system, such as radiators, underfloor heatingor a hot water cylinder.
How efficient are air source heat pumps in the UK climate?
Air source heat pumps are highly efficient, even in the UK’s cooler climate. They can operate effectively in temperatures as low as -15°C. For every unit of electricity used, an air source heat pump can generate around 3 to 4 units of heat, making them much more efficient than traditional heating systems.
Does an air source heat pump reduce my carbon footprint?
Yes, air source heat pumps are a renewable and low-carbon heating solution. While they do require electricity to operate, they produce far more energy than they consume. If powered by green electricity, their environmental impact is further reduced.
Will an air source heat pump reduce my energy bills?
Yes, air source heat pumps can reduce your energy bills, particularly if you are replacing older electric, oil, or LPG heating systems. Savings depend on factors such as your home’s insulation, current heating system, and energy tariff.
Is financial support available for installing an air source heat pump?
Yes, the UK government offers financial incentives through schemes like the Boiler Upgrade Scheme (BUS), which provides grants of up to £7,500 to help cover installation costs. Additional local grants may also be available.
How much does an air source heat pump cost to install?
The cost of installing an air source heat pumptypically ranges between £7,000 and £14,000, depending on the size of the system and your property. While the upfront cost may seem high, financial support and long-term energy savings make it a worthwhile investment.
Does my home need to be well insulated for an air source heat pump?
Not necessarily but it is recommended. Homes with good loft, walland floor insulation, as well as double-glazed windows, will benefit the most from this type of system.
How noisy are air source heat pumps?
Modern air source heat pumps are designed to be quiet, with most producing a noise level similar to a standard fridge. Noise levels usually range from 40 to 60 decibels and can be minimised by correct installation and placement.
How long does an air source heat pump last?
With proper maintenance, an air source heat pump can last for 15–20 years or more. Regular servicing helps to ensure efficiency and longevity.
Will I need planning permission to install an air source heat pump?
In most cases, air source heat pumps are classed as permitted development and do not require planning permission, provided they meet specific criteria regarding noise levels and placement. However, it’s always best to check with your local council.
Can an air source heat pump work with my existing radiators?
Yes, but radiators may need to be larger to work efficiently with an air source heat pump, as heat pumps operate at a lower temperature than traditional boilers. Underfloor heating is an excellent match for air source heat pumps.
How do I maintain an air source heat pump?
An annual professional service is recommended to keep the system running efficiently. Contact us to arrange your annual service with one of our trained engineers.
What space do I need for an air source heat pump?
An air source heat pumpsystem requires space outside your home for the outdoor unit, which is typically about the size of a standard air conditioning unit. The heat pump should be situated so that air can flow freely into it so sufficient clearance around the unit is required. Inside, you’ll also need space for a hot water cylinder if you don’t already have one.
Will I need a hot water cylinder?
Yes, when installing an air source heat pump, a heat pump-specific hot water cylinder must be used. In most cases your existing cylinder will not be suitable.
Will an air source heat pump work in older properties?
Yes, but older properties may need additional insulation or larger radiators to maximise efficiency. Heat pumps perform best in well-insulated homes, so assessing and upgrading insulation is highly recommended.
How long does it take to install an air source heat pump?
Typically, it takes between 2 to 5 days to install an air source heat pump, depending on the complexity of the project. A site survey beforehand will help determine the timeline.