Are air source heat pumps noisy?

There are many factors that you may want to weigh when deciding whether to install an air source heat pump, including their cost and efficiency. You may also be concerned that they may cause a disruptive noise. Whether they are loud or not also depends on a range of considerations.

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Heat Pump Noises

Most heat pumps will make a whirring sound at a relatively low volume. Some people may find this distracting, but it is relatively unobtrusive compared to other machines and electronics. It has been compared to a desktop fan in concert with a microwave.

As the pump is situated outside rather than in the bedroom, this should not be a major concern if you are sleeping or trying to watch television, though it may be noticeable when you are sitting in the garden. You should also be aware of whether it is in the audible range of your neighbours.

Factors Impacting the Noise Level

The main factor affecting the sound of your heat pump is the speed of its fan. This can vary between models and manufacturers, but can also change depending on the heat pump’s work rate. In other words, at times when you are using your heat pump more, it may become louder. A full assessment before installation should help you weigh the factors impacting the noise levels.

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Mitigating the Noise of a Heat Pump

Heat pump noises can be mitigated by siting the pump away from any windows and a reasonable distance from any neighbouring property. Obviously, during installation, there may be an increased level of noise.

Specialist installers of air source heat pumps Gloucester, such as gsmlimited.com , may be able to advise you on the noise level of your chosen model and how to mitigate its impact. Your installer should be properly qualified so you can register your pump.


If noise is your main concern regarding heat pumps, then you may be reassured to know that most models are relatively quiet, making only a soft whirring noise. This can vary, however, depending on the model and the speed of the fan.

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