It is important to understand that each system requires a different solution and there are a few parameters that affect the final price – the condition, mold spore, the age of the ducts, the insulation and many more. Then, First we need to inspect the ducts and provide a solution according to it’s needs.
As we mentioned above, there are several variables that affect the maintenance of the system. In any case, it is advisable to do an inspection every two years to make sure that the system is clean and functioning properly and to change filters every three months.
The Returns air are the big vents with the Air Filters inside. Their role is to bring air into the AC unit and that’s the reason why the air filter is there, to reduce the amount of dust that gets into the system. it’s also recommended to replace the Air filters every 3 months as part of the routine maintenance of the house.
In most cases, that’s the place where the mold start to grow. Hot air flows from the Return air through the AC system to the Evaporator Coil ,which is cold, the contact between hot and cool creates condensation and moisture, those leads to mold growth eventually. This process can be particularly accelerated in Southern areas where the temperature is high most of the year.
The air from the Plenum Box flows through the air ducts to the house. As you understand, the bacteria and germs flow directly through the ducts and sink there. Throughout the process that’s the longest part. We use TruckMaster II connected to a HEPA filter Vacuum cleaner (shown in video) that brush and vacuum the duct at the same time. We also use sanitation to remove the mold from the air ducts.
There are cases which we can notice mold spots on the covers (Grilles). It’s important to note that it doesn’t mean the ducts contain mold, inspection required first. We take each one of the grilles and wash them with water pressure and sanitizer. Sometimes there are cases that we recommend to replace them.
Eventually, after we remove the mold from the system, we highly recommend to install a UV light to prevent mold growth again. As we all know, mold fungus grows only in dark and cool places, therefore we use a UV light to simulates the Sun light. To learn more about “UV Light” press HERE