Air Source Heat Pump Frequently Asked Questions

Here we answer your common questions on air source heat pumps from are they noisy? to how much room do i need?


Are Air Source Heat Pumps Efficient?

An air source heat pump is around 300% efficient. This is because for every unit of energy it uses to extract heat from the air, it typically outputs over 3 units of heat energy into the property. However, It is also dependent on the characteristics of the home the heat pump is being installed in. These characteristics include: • Where on the property the air source heat pump is located • How well insulated the property is • The brand of heat pump installed • The heat pump has been designed properly for the property size

Are air source heat pumps noisy?

No, most air source heat pumps are no louder than a fridge/freezer or dishwasher. Even if you need to install your heat pump near your outdoor sitting area you’re less likely to use this space during the winter when the heat pump is running more often.

How long does it take to install an air source heat pump?

It takes around 2-3 days depending on whether there is an existing heating system and what that system is.

What are the disadvantages of an air source heat pump?

• Cost - Whilst the more affordable heat pump option, air source heat pumps are not yet produced on the same scale as gas or oil boilers, so they are more expensive to purchase. • Planning Permission - In some cases you may be required to apply for planning permission. This usually applies for listed buildings in AONB or National Parks. • Space - If you have a relatively small outdoor area, an air source heat pump could take up a proportion of this - it also needs to be installed at least 2 metres away from your neighbour’s boundary.

Can air source heat pumps be installed in an older building?

Yes, it can, providing that the insulation is being improved – ideally as close to current build regulations as possible. This enables the air source heat pump to work efficiently and keeps running costs low.

Where is the best place to position my ASHP?

We would recommend positioning an air source heat pump in a location that minimises the pipe and cable runs from the heat pump into the plant room. You will also need to be mindful of its proximity to bedroom windows, the requirements of permitted development/planning permission, and sound assessment results. We take care of all of this as part of our air source heat pump design.

What does MCS stand for?

The Microgeneration Certification Scheme or MCS is often described as the renewables equivalent of Gas Safe. You will need your heat pump system to be MCS compliant if you wish to benefit from any government grant, like the Boiler Upgrade Scheme.

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