What you need to know
Good siting protects comfort, airflow and future access
Published sound data is useful, but it needs to be applied to the proposed position and installation arrangement. A unit in an open side garden behaves differently from one between hard walls or close to a neighbour’s window.
The quietest-looking corner is not necessarily suitable if airflow is restricted or service access is poor. Sound, performance, planning and maintenance need one coordinated decision.
Request a £0 siting survey and written whole-system quote
Share the postcode and property type. The survey can consider sound, neighbours, airflow, drainage, appearance and service access together.
Read the manufacturer information carefully
Sound power and sound pressure are not interchangeable figures. The conditions, operating mode and measurement distance behind a quoted value should be clear before it is used in a planning or neighbour discussion.
A final assessment may need the selected model’s technical data and the geometry of the site. Marketing phrases such as “library quiet” are not a substitute for that information.
- Exact model and operating mode
- Sound power information
- Any stated sound pressure distance and conditions
- Night or reduced-noise modes and their design implications
- The relevant planning or MCS assessment method
Avoid positions that amplify or recirculate
Hard corners, narrow passages and facing walls can affect how sound is perceived. They can also encourage recirculation of discharged air if manufacturer clearances are not respected.
The designer should account for fences, vegetation, future extensions, snow or debris exposure, condensate drainage and safe access—not just the empty space visible on survey day.
Consider bedrooms and neighbouring amenity
A position near a bedroom or frequently used neighbouring space deserves particular care because the unit may operate during colder nights. Boundary distance alone does not describe the full acoustic context.
Where the property is a flat, terrace, listed building or in a conservation setting, ownership and planning questions may be as important as the sound calculation.
- Your own and neighbouring windows
- Likely operating periods
- Reflective walls and enclosures
- Shared gardens or access routes
- Visible elevations and local designations
What to expect from a useful survey
Your survey will identify a proposed position, record the surroundings, check the manufacturer’s clearances and explain whether a formal sound or planning assessment is needed.
If several positions are possible, ask how each affects pipe length, appearance, drainage, service access and sound. The best option is usually a balanced design choice rather than the furthest point from the house.
Keep in mind: Planning and permitted-development rules are conditional. Confirm the current Scottish position for the property and selected unit before work starts.
What to read next
Related guides and services
Questions people ask
Are modern heat pumps silent?+
No outdoor mechanical equipment is silent. Published sound data and a site-specific assessment are more useful than a blanket claim.
Can the unit be enclosed to reduce noise?+
Do not add an enclosure without checking manufacturer airflow, clearance and service requirements. A poorly designed screen can affect operation.
Does permitted development guarantee the position is suitable?+
No. Planning status is one check. Manufacturer clearances, sound, drainage, airflow, ownership and maintenance access still need to be resolved.
Should the unit be as far from the house as possible?+
Not necessarily. Longer pipe routes and exposed locations introduce other design issues. Compare realistic positions as a whole.
Independent sources
Scheme rules and guidance can change. Check these sources before making a financial or planning decision.