Molds are often present within an HVAC system as it is caused by the moisture within the duct. It often sneak out and can grow and make the occupants of home sick without ever being seen. It is spread faster through an HVAC system with forced air.
Despite, if the machine is inspected regularly but you are still getting complaints about it as it begins to grow in as little as 48 hours, then here are a few ideas you can give to the contractor for cleaning it.
Turn off your HVAC system. Every technician involved in this cleaning should wear at least a respirator. Anything having pours should be substituted, such as filters or insulation that has become wet. The waste needs to be double-bagged while disposing off in thicker plastic bags. Wet vacuums should be used to wash out any standing water. Use an EPA registered disinfectant labelled for HVAC use to clean non porous surfaces such as duct work, coils, plenums, pans etc of mould and other dirt. As an added step, every part of ductwork should be isolated and needs to be cleaned with bladders so that the pores you stir up during cleaning won't spread to other areas of the system. Then you must fog the area with a disinfectant registered by EPA.
Mold and mold inhibitor should be applied to all elements of the HVAC systems. Everything implemented must be EPA registered and should have the tag for specifically utilized in HVAC systems to decrease the risks related to usage of incorrect cleaners or chemicals in HVAC systems.
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