Air source heat pumps are becoming increasingly common as homeowners look at alternative ways of heating their properties.
The installation itself will not usually be a Party Wall matter.
However, depending on where the equipment is positioned and what construction work is needed to install it, there can occasionally be issues worth considering.
Does installing a heat pump require a Party Wall Notice?
Not simply because it is a heat pump.
The Party Wall etc. Act 1996 applies to specified types of building work rather than particular appliances.
A typical heat pump fixed to a base within your own property may therefore have no Party Wall implications at all.
The position becomes more relevant if installation requires works to a shared structure.
If you are unsure what legally constitutes a shared structure, our guide explaining what a Party Wall is under the Act is a useful starting point.
Fixing equipment to a party wall
If equipment, pipework, brackets or structural supports are proposed on a wall shared with another property, the arrangement should be considered carefully.
Minor fixings may not necessarily constitute notifiable works, but more substantial cutting into or structural alteration of a party wall could fall within the Act.
Our detailed guide to Section 2 of the Party Wall etc. Act 1996 explains the types of work that can be carried out to an existing party structure.
Excavating for equipment
Some installations require bases, trenches or new pipework.
If excavation takes place close to a neighbouring building and is sufficiently deep, the excavation provisions of the Party Wall Act may need to be considered.
For most straightforward domestic heat pump installations this is unlikely to be the main issue, but every project is different.
Noise is a separate consideration
A common neighbour concern with heat pumps is operational noise.
This is not, by itself, a Party Wall matter.
Planning requirements, permitted development conditions, environmental health considerations and manufacturer installation guidance may all be more relevant to noise.
It is important not to use the Party Wall Act as a substitute for those separate controls.
Flats may be more complicated
Leaseholders should also check their lease.
External equipment, penetrations through external walls and changes to communal structures may require landlord or freeholder consent independently of Party Wall requirements.
Our Section 20 Party Wall definitions guide also explains why floors and walls between flats can amount to party structures.
Speak to Simple Survey if structural work is involved
Most heat pump installations will not need a Party Wall Notice solely because a heat pump is being installed.
However, where the project involves shared walls, significant structural alterations or excavation near a neighbouring building, it is sensible to check.
Visit Simple Survey’s Party Wall service page or send us the installation details and we can advise whether the Act is relevant.