Do You Need Planning Permission for an Air Source Heat Pump?

Last Updated on July 4, 2025

Air source heat pumps (ASHPs) are rapidly becoming one of the most popular low-carbon heating options in the UK. As more homeowners and landlords explore this energy-efficient solution, a key question often arises: Do you need planning permission for an air source heat pump?

Whether you’re upgrading your property for energy efficiency, reducing heating bills, or taking advantage of government-backed schemes, understanding the planning requirements is crucial before moving forward.

In this guide, we break down the planning rules, exemptions, and considerations specific to England, Scotland, Wales, and Northern Ireland—so you can make a confident, informed decision about your heat pump installation.

Is Planning Permission Required for Installing an Air Source Heat Pump in the UK?

In most cases, you do not need planning permission to install an air source heat pump in England and Wales thanks to Permitted Development Rights (PDRs). However, certain conditions and restrictions apply, especially in conservation areas, listed buildings, and flats.

Key Permitted Development Criteria in England & Wales:

• The ASHP unit must be:
  • No taller than 3 metres.
  • Located at least 1 metre from the boundary of your property.
  • Installed on the ground or building of a domestic property.
• Only one ASHP unit is permitted under PDR.
• The unit must be sited to minimise impact on the building’s appearance and local amenity (i.e. noise and visual intrusion).
• The installation must comply with MCS Planning Standards, such as MCS 020 noise limits.

Failure to meet these conditions means full planning permission may be required.

Do Planning Rules Differ Across the UK?

Yes, planning permission rules vary between England, Scotland, Wales, and Northern Ireland. While there is broad alignment, there are local nuances to be aware of.

Scotland:

• PDRs apply to domestic properties if the ASHP is:
  • No higher than 3 metres.
  • Installed more than 1 metre from the boundary.
• Noise levels must meet local authority guidance.
• Flats or maisonettes will always require planning consent.

Wales:

• Similar to England, but additional restrictions may apply in National Parks or Areas of Outstanding Natural Beauty (AONBs).
• The same 1-metre boundary rule applies.

Northern Ireland:

• Air source heat pumps typically require planning permission, but rules are currently under review.
• Always consult your local planning authority (LPA).

What Happens If Your Property Is in a Conservation Area or Is Listed?

Properties that fall within designated zones such as conservation areas, World Heritage Sites, or are listed buildings will usually require planning permission regardless of PDR.

Listed Buildings:

• You will need both Listed Building Consent and potentially full planning permission.
• Installations must not affect the architectural or historic interest of the building.

Conservation Areas:

• Planning authorities may withdraw Permitted Development Rights via an Article 4 Direction, especially in visually sensitive areas.

What If You’re Installing an Air Source Heat Pump on a Flat or Commercial Property?

Flats:

• PDRs do not apply to flats, maisonettes, or buildings with shared ownership.
• You’ll need to submit a full planning application.

Commercial Properties:

• Separate commercial planning laws apply, depending on the building’s classification and whether it’s in a conservation area.
• If the ASHP affects the building’s appearance or increases noise pollution, planning consent is likely required.

How Important Is Noise Compliance When Avoiding Planning Permission?

Noise is one of the most critical planning criteria under the MCS 020 standard. To avoid needing permission:

• The heat pump must not exceed 42 dB(A) at 1 metre from the nearest neighbouring property.
• Acoustic enclosures or strategic positioning may help reduce noise levels.
• Professional installers use noise calculators to assess compliance.

Can an Installer Help You Navigate Planning Permission?

Yes, reputable MCS-certified installers like those partnered with Eco Happy will assess planning compliance as part of your site survey.

They will:

• Determine whether your installation falls under PDR.
• Handle planning applications (if needed).
• Ensure compliance with noise, boundary, and siting requirements.

What Happens If You Install Without Planning Permission?

Installing an ASHP without the required permission can lead to:

• Enforcement action from your local council.
• Fines or mandatory removal of the unit.
• Difficulty selling your property if compliance is not documented.

Always check with your local authority or use a qualified installer to stay on the safe side.

How Can You Check If You Need Planning Permission?

You can:

• Use the Planning Portal’s interactive guide for heat pumps.
• Contact your local planning authority (LPA).
• Book a free site survey with Eco Happy to get expert guidance.

Ready to Upgrade? Request a Free Air Source Heat Pump Quote Today

Choosing to install an air source heat pump is a smart, eco-conscious decision—but getting the planning side right is just as important as the technology itself. At Eco Happy, we handle everything from the paperwork to the installation, ensuring a smooth, stress-free process.

Free, no-obligation quote
MCS-certified installers
Assistance with planning and government funding schemes
Fast, professional installation across the UK