Air Source Heat Pumps

You can use heat absorbed from the air to heat your home – even in winter!

Air source heat pumps absorb heat from the outside air, like a fridge in reverse, and this heat can be concentrated and used to heat your home or hot water. It is usually used in radiators, under-floor heating systems, or warm air convectors, saving you money in the process.

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The Basics

Heat can be extracted from the air even when the outside temperature is as low as minus 15°C, although heat pumps are more efficient at higher temperatures.

Currently they qualify for the government’s Renewable Heat Premium Payments scheme, which gives a voucher for £850 towards the cost of installation, but even without this they can produce valuable energy savings.

In a similar way, heat can be extracted from exhaust air being ventilated from your home and transferred to the incoming air via a heat exchanger. These systems are called MVHR (Mechanical Ventilation and Heat Recovery).

They do require some electricity to circulate the heat that they extract, but this heat is constantly renewed so they will capture more energy than they expend.

The savings that can be made vary depending on the type of fuel that you are replacing, however the Energy Saving Trust trials suggest that a 3 bedroom semi currently using oil or solid fuel for heating and hot water could save around £300, with homes using electricity saving as much as £610.

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FAQs

Do air source heat pumps come with a warranty?
Most air source heat pump installations include warranties for parts and labour. You should check your quote or the pump's product details to find out how long that model's warranty is.
How much space do I need for my air source heat pump?
This will depend on the make and model of the heat pump. The air handling unit component of the pump will need to be fitted in a location where air can circulate freely, so typically on an outside wall. Typically the air handling unit will be similar in size to a kitchen appliance, such as a washing machine or dishwasher. You will also need space inside your house for the heat pump itself.
What properties are not suitable for an air source heat pump installation?
Air source heat pumps are not suitable for use in houses where the levels of insulation are not known and where the age and type of the heating distribution system (radiators and pipes) is unknown. Because they produce hot water at a lower temperature than conventional boilers they are particularly suited to house with under-floor heating.
Can I heat my swimming Pool with an air source heat pump?
Air source heat pumps are ideal for pools. Note that for existing swimming pools the current heat exchanger would need to be changed.
How much do they cost and how much will I save?
Complete our free home Energy Assessment to find out how much a typical air source heat pump would cost for your house, how much it would save you and how long the payback will be.
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