Heat pumps produce some operating noise because they use fans and compressors. The perceived noise depends on equipment design, operating conditions, installation location and surrounding buildings.
Where does heat pump noise come from?
- Outdoor fan
- Compressor
- Air movement
- Vibration
- Pipework
- Installation surfaces
Why outdoor unit location matters
The position of the outdoor unit can influence how sound travels and how noticeable it becomes to occupants and neighbours.
Vibration and mounting
Poor mounting can create additional vibration. Appropriate mounting arrangements should follow equipment and installation requirements.
Night-time operation
Heat pumps may operate during periods when background noise is lower. System design and control settings should therefore consider the operating environment.
Noise should be considered before installation
Moving an outdoor unit after installation can be expensive. Location should be assessed during the design stage.
Plan a quiet heat pump installation
Assess equipment location, operating conditions and property layout before installation.
Explore Heat PumpsFrequently asked questions
Are heat pumps noisy?
Heat pumps produce some operating noise from fans and compressors, but modern systems can be designed to operate relatively quietly.
Why is my heat pump making unusual noises?
Unusual noise can have several causes including vibration, airflow, mechanical issues or installation conditions. Persistent unusual noise should be inspected.
Where should an air-source heat pump be installed?
The outdoor unit should have suitable airflow, access and a location that considers noise, maintenance and the surrounding property.
Can heat pump noise be reduced?
Appropriate equipment selection, positioning, mounting and system design can help reduce unwanted noise.
Samuel Price
Heat Pump Technical Consultant at BrightGrid Energy


