Although Australian Standard AS 3666.2 details that HVAC ducts & coils should be inspected monthly, in practice this is not always necessary. A professional HVAC cleaning company like Clean Air Filtration Services will be able to advise you on how frequent your HVAC ducts should be inspected in order to comply with the standard.
The relevant standard, AS 3666.2 specifies that ducts and coils are cleaned \’when necessary\’. In practice, for most systems, this would be once per year at least.
Australian Standard AS181 states that canopies and exhausts should be cleaned at least once every 12 months.
However, best practice is very often a lot higher than that. It will depend on the fuel (solid / non-solid), the food cooked and the cooking frequency.
A better way to define the frequency is that the canopy and exhaust system should be cleaned when the grease build-up exceeds 0.2 mm on average across the system or if the grease build-up exceeds 2 mm in any one spot.
The primary reason to clean your Commercial Kitchen Canopy and Exhaust is to prevent a kitchen fire. However, fire is just one reason to clean your system. Here are 5 more reasons: