Mechanical Plant Noise can arise in residentialcommercial or industrial premises from noisy machinery or plant and can result in causing detrimental effects on the surrounding environment and people if left untreated.


Issues can arise from new equipment being installed, existing equipment becoming worn or noisy with age or as a result of a property’s class of use being changed. Examples of mechanical plant noise sources include (but are not limited to):

1. Air conditioning units

2. Chiller Units

3. Extraction units

4. Temporary or back up power generation units

Assessing and Testing

Mechanical Plant is assessed under BS 4142 covering the impact of noise for new industrial units. BS 4142 predominantly refers to new industrial units at planning stage.  For commercial properties, additional planning conditions may need to be considered.  Further information on planning conditions can be found in The National Planning Policy Framework (NPPF)

Additional by-laws or Local Authority requirements may also need to be included in any assessment and these would be checked at the time of any assessment to ensure inclusion within the final report.

Testing includes the collection of sound data  close to each individual noise source and also at predetermined distances from the noise source. If a noise complaint has been received, measurements may be taken at the boundary of the complainant’s property to determine noise levels at this position.


Once the extent of the issue is known we can provide  design or solution guidance to ensure that the acoustic issues are successfully dealt with.