AS 1851-2012 states that all types of exhaust ducts should be inspected and cleaned if necessary on a 12 monthly basis, minimal.
Some kitchen exhaust systems require a higher obligation to their maintenance dependent on frequency and style of cooking.
Grease from cooking is filtered by primary filters in the range hood, it then travels through the plenum into the connecting duct work, up the riser and is expelled from the fan outlet.
Fires in these particular systems often start at the first component in the kitchen and work their way through the entire system which can have devastating results.
If you are not maintaining your kitchen exhaust system in accordance to AS 1851-2012, your building may be deemed non compliant and your insurer in most cases will not honour their commitments.
Laundry and toilet exhaust systems can have their performance drastically compromised due to buildup within ducts and fans. This can also be a major fire hazard which can have similar devastating consequences, like kitchen exhaust.
Air conditioning ducts, air handling units and coils are all very susceptible to heavy buildups of dust and dirt which can dramatically decrease the performance and flow of the system. Airborn diseases, mould, allergens and other contaminants can be present within these systems which means the cleaning and maintenance should be treated with the highest priority to ensure high health and safety standards are met.
