Do I need planning permission for a heat pump in the UK?

An air, ground or water source heat pump is a more sustainable and efficient choice compared to traditional gas or oil heating systems.

One common concern is whether installing a heat pump requires planning permission. You usually don’t need planning permission for a heat pump. Instead, heat pumps sometimes require ‘permitted development’, which is the right to carry out specific minor building works without a full planning application.

In contrast, planning permission is a formal application and approval process for building projects that are not covered by permitted development rights.

The rules in England and Wales are different from those in Scotland, so knowing the rules for the country is important.

The aroTHERM plus heat pump, boasting an A+++ energy efficiency class, combines exceptional performance and energy efficiency, making it ideal for various properties when paired with a Vaillant hot water cylinder and indoor unit.

On the 29th May 2025, new planning rules are due to come into force to make it easier to install air source heat pumps in England without the need for planning permission - supporting the rollout of low-carbon heating as part of the Warm Homes Plan

• Installation within 1m of a property boundary
• Size limit increase from 0.6m3 to 1.5m3
• Up to two heat pumps allowed on detached homes
• Inclusion of air-to-air systems that are also used for cooling
• References to the updated MCS 020 noise standard

The aroTHERM plus and aroTHERM split 10kW and 12kW will no longer require permission. These updates are set to help streamline the consumer journey and expand access to heat pump technology.

If you live in Wales, the following rules apply:

The appliance must not protrude more than 1 metre from the side of your home.

• The appliance must not protrude more than 1 metre from the side of your home.
• You must install the outdoor unit at least 1 metre from the property boundary.
• You can install only one heat pump on the property.
• You may need special approval to install a heat pump in a conservation area or a listed building.
• The installation must comply with the requirements set in the Microgeneration Certification Scheme (MCS).

These rules aim to ensure that the installation doesn’t disrupt the surrounding area or affect neighbouring properties.

If you live in Scotland, you can find advice on permitted development here.

If you live in a listed building or conservation area, the rules can be stricter. In these cases, it’s a good idea to check with your local planning authority before installing a heat pump.

You may need planning permission, but many local councils support renewable energy projects. A good idea is to discuss your plans with them.

It is important that if you’re unsure if you can install a heat pump at your home, check all planning regulations prior to installation.

At Vaillant, we understand that navigating planning permissions/permitted development can seem daunting. If you’re interested in installing a heat pump at your home, your installer will be able to advise you on any changes you may need to make to ensure your home is suitable.

This includes the level of insulation, heat loss calculation and will be able to advise you on the permission process.