Christopher Collett and Associates Ltd. works with building owners and operators to help guide them through the HVAC system cleaning process.  It is important for a building operator to know that their HVAC systems have been properly  cleaned in a cost effective manner.  We assist our clients to develop thorough specifications for the HVAC system cleaning process, which build in quality assurance actions and accountability into the project completion requirements.

Many building operators are now including cleanliness verification requirements within their project specifications,which require a third party to assess whether the cleanliness criteria for a project have been met.  Not only does Christopher Collett and Associates help to develop the project specifications, we also conduct post cleaning inspections, and surface dust testing using the North America Duct Cleaning Association (NADCA) surface vaccuum test procedures.  By using a third part assessor, a building operator can know with confidence that the HVAC cleaning project has been successful.