.png)
AIR SOURCE HEAT PUMP NOISE ASSESSMENTS
We provide noise assessments for air source heat pump (ASHP) installations to support planning applications and demonstrate that proposed equipment can operate without unacceptable noise impact at nearby properties. Assessments consider the proposed unit, installation location, surrounding receptors and existing acoustic environment.
Where required, we undertake background noise measurements and assess the installation with reference to relevant planning requirements and acoustic guidance. We can advise on equipment selection, location and practical mitigation measures, and prepare clear technical reports suitable for submission to the Local Planning Authority.
Request a quote
When might you need an ASHP Noise Assessment?
Planning Applications
Noise assessments for proposed heat pumps to support planning applications and address council requirements.
Sensitive Neighbours
Advice on heat pump locations and noise controls where nearby homes or gardens could be affected.
Existing Installations
Investigation of noise from installed heat pumps, with practical advice to help reduce disturbance.
Air Source Heat Pump Noise Assessment Services
Site & Receptor Review
Review of the proposed installation and nearby noise sensitive properties.
Equipment Noise Data
Assessment of manufacturer sound data and proposed operating conditions.
Background Noise Surveys
Measurement of existing background sound levels where required.
Noise Predictions
Calculation of ASHP noise levels at nearby noise sensitive receptors.
Acoustic Character
Consideration of tonality and other relevant sound characteristics.
Multiple Heat Pumps
Assessment of cumulative noise where more than one unit is proposed.
Mitigation Advice
Advice on location, screening, specification and practical noise control.
Planning Reports
Clear technical reporting for planning submission or condition discharge.
Our Approach
We consider each heat pump, its proposed location and nearby noise sensitive properties. Early acoustic advice helps inform equipment selection and positioning, particularly where space is limited or several units may need to operate together.
Review the site layout, nearby windows and relevant planning requirements to establish the scope of the assessment.
Check manufacturers’ acoustic data, expected operating modes and the number of heat pumps that may run simultaneously.
Establish the appropriate assessment method and undertake representative background noise measurements where these are needed.
Predict or measure noise at relevant properties, considering distance, reflections, screening and the combined operation of units.
Recommend practical noise control measures and prepare a clear report explaining the findings and proposed mitigation.
Advice may include alternative locations, quieter equipment or acoustic screening, coordinated with the installer to maintain suitable airflow, maintenance access and effective operation.
Relevant Standards and Guidance
The appropriate assessment depends on the installation, surrounding properties and planning route. Relevant standards and guidance may include:
MCS 020(a) — the sound calculation method for relevant permitted development installations.
BS 4142 — detailed assessment where appropriate to the installation and agreed scope.
BS ISO 1996-2 — environmental noise measurement where a survey is required.
Local authority requirements — project specific assessment criteria, noise limits and planning conditions.
An MCS sound calculation and a site specific noise assessment serve different purposes. We review the equipment details, proposed location and project requirements before recommending the appropriate approach, explaining the scope of the assessment and any further acoustic information needed to support the installation.
Planning Support and Installation Advice
We review planning conditions, Environmental Health comments and proposed equipment details to establish the acoustic information required. Where appropriate, we liaise with the installer and local authority on the assessment scope, equipment positioning and practical measures to control noise.
Our reports support planning applications and condition discharge. For installed systems, we investigate noise concerns, assess operating conditions and recommend practical improvements. Where needed, we undertake verification measurements to assess performance against the relevant project criteria.
Frequently Asked Questions
Do I need a noise assessment for an air source heat pump?
+
The requirement depends on the installation and planning route. An MCS sound calculation may be relevant to a domestic proposal, while other projects may need a site specific assessment.
We can review the equipment, layout and any local authority comments to advise on the acoustic scope.
Is an MCS sound calculation the same as a BS 4142 assessment?
+
No. The MCS calculation addresses the noise requirement for relevant permitted development installations. A BS 4142 assessment considers rating and background sound levels, sound character and context.
The appropriate approach depends on the project and the applicable assessment requirements.
Will I need a background noise survey?
+
Not every heat pump assessment requires a survey. A site specific assessment may need representative background measurements, particularly where required by the local authority.
We will review the assessment route and available information before recommending site survey if that is deemed necessary.
Can you help if an installed heat pump is causing noise concerns?
+
Yes. We can investigate the installation, measure operating noise and consider the contribution at nearby properties. Advice may include changes to the location, operating arrangements or acoustic treatment, coordinated with the installer and informed by the findings.