Air source heat pumps: all you need to know
From reducing your energy bills to helping the environment, an air source heat pump brings many benefits. We outline how they work and what to consider before fitting one.
With energy costs soaring, now is an ideal time to look at alternative ways to heat your home. One of the most efficient is to install an air source heat pump, which will warm your home and heat your water using heat from the air – even on days when the air outside seems cold.
What is an air source heat pump?
An air source heat pump uses the same principles as a refrigerator or air conditioning unit, but in reverse: rather than removing heat, it creates heat. The pump is a unit that sits outside your property and runs on electricity – but the benefit of the heat it produces far outweighs the running cost.
How does an air source heat pump work?
A large fan draws in air and passes it over a heat exchanger filled with a liquid refrigerant. The heat from the air causes the refrigerant to warm up and turn to a gas. It’s then passed to a compressor, which increases pressure on the gas, causing its temperature to rise further. The heat from this gas is then extracted by passing it over the internal heat exchange, which transfers this heat to your hot water and heating systems. The refrigerant is then re-circulated through the system to gather more heat. An air source heat pump works best when used to maintain your home at a constant temperature.
What other equipment do I need with an air source heat pump?
The most popular way to heat a home with an air source heat pump is to connect it to a water buffer tank, where it heats water for circulation through your radiators or underfloor heating. The system works as a loop, with cold water then travelling back to the buffer tank to be reheated. A separate hot water tank can be installed to provide hot water from your taps. To ensure your air source heat pump works efficiently, you’ll need to make sure your property is properly insulated.
What are the benefits of an air source heat pump?
Air source heat pumps produce zero carbon emissions. They are also enormously efficient, drastically reducing your heating bills. They are quick to install, have a long lifespan and need little maintenance. As they’re combustion-free, they’re safer than fossil fuel heating.
Will I need backup heating?
If your system is properly installed, you will not need any back-up heating.
What are the downsides of an air source heat pump?
Air source heat pumps do require some space; the pump is a relatively bulky unit that sits outside your building, and for some types of accommodation, this will not be possible. If your home is in a National Park or AONB, you may need planning permission to install one.
Is there any financial help available for installing an air source heat pump?
Yes! Under the government’s Boiler Upgrade Scheme you can receive £5,000 off the cost and installation of an air source heat pump.
How can I find out more?
Get in touch with us today and we’ll talk you through the options. We supply and fit air source heat pumps from two trusted partners: Worcester Bosch and Valliant. We’ll be happy to explain the benefits and discuss how to get the best out of an air source heat pump in your home.