Certification

All cleans carried out by Duct Hygiene are verified by fully auditable reports.

The content includes site schematic, wet film thickness (WFTT – a measurement method to record grease deposit levels), photographic evidence and site inspection details.

A certificate can therefore be issued, based on quality results, which can be repeated and audited.

This certificate can be displayed to your customers, insurance companies and environmental health officials and has a genuine value.