The initial step in HVAC Hygiene where the system’s current state is graded against the standard. Visual inspections, pressure drop readings across filters and ATP testing for cleanliness all help to identify issues. Presco Environmental IAQ technicians then provide a condition report including the best actions to combat any issues.
Technicians perform a chemical clean of the entire ventilation system, from outside air intake right through to supply air ceiling grilles. Repainting flaky paint, repairing rust damage and replacing leaking or damaged seals can all be done at this step. Any damaged or aging filter holding banks are repaired. The air supply fan should also receive a full clean, to increase air movement efficiency; a dirty fan is less efficient as it requires more power to run and can cause vibration issues. HVAC components to be cleaned and sanitised include:
Following a HVAC system deep clean, antimicrobial coating can be applied to control mould regrowth.
A deep clean and sanitise should be conducted of the:
For each individual situation, technicians advise the best filter solution, ensuring it meets ISO16890 standards. Presco Environmental supplies all types of air filters;
Presco Environmental supply and install UV-C lighting systems to eliminate airborne pathogens and control odour. This is a particularly effective solution for hygiene of heat exchange coils.
Our advisors can look at your system, and help you choose products that will ensure it stays hygienic all year round. Some of these technologies include needlepoint bipolar ionisation (an air cleaning technology that removes dirt and pathogens using ions) and anti-microbial coatings (a special technology that can be painted inside your system to stop the growth of mould and fungi.)
Technicians perform a deep clean to remove Legionella risk. Compliance cleans are also completed, to meet AS/NZS 3666.
Presco Environmental work with factories to create ongoing or annual maintenance programs for HVAC hygiene. This includes scheduled checks and cleans of both the clean and dirty side of filters to ensure no bypass is or has occurred, in accordance with IRHACE best practise guidelines. Technicians provide documented maintenance reports for factory records.