The presence of mold in heating and cooling systems is a common complaint. Yet, mold problems could be even more common than you think! For one, molds have very minimal needs for survival. For one, it needs water or moist and food to proliferate. For mold, "food" means virtually anything, including organic or even synthetic material like paints, adhesives, and even glass and metal.
Controlling and managing the growth of mold should begin with the preventive measures. For one, high humidity usually leads to condensation and water accumulation. In general, a humidity level above 60% results in mold growth. Buy humidity monitors and use your HVAC to keep humidity levels inside your home between 30% and 60%. Molds also ingest dirt, so keeping the house clean can also control mold growth.
The key to preventing fungal growth in the HVAC is to control moisture and to constantly remove organic dirt and debris in the system. However, despite using high-grade filters, it is impossible to filter all dirt out of the airstream. Some dirt and mold will find their way into the HVAC system. Nonetheless, better filtration will limit the quantity of debris that will serve as food for molds that already present inside the HVAC system. To deny them food is a good way to control their growth and proliferation inside the system. Most of the filters available in the market today are extra-efficient in collecting debris. However, as the filters become dirty, their resistance to airflow increases too and dirt bypass around the filters become more pronounced, therefore increasing the amount of dirt available for mold colonies inside the HVAC system. Cooling coils are also growth sites for molds. There should be at least 18 inches space between the cooling coil and heating coil for you to easily clean both coils.
HVAC Maintenance and Repair
By design and function, HVAC operates through moisture movement. HVAC systems are designed and built to withstand fungal contamination and moisture penetration. Even so, proper operation and maintenance should be observed to keep HVAC systems functioning as how they are designed. Heating repair must be done regularly to ensure optimized evaporation processes inside the house and to keep humidity low.
Catching Mold Problems Early
If a mold problem already exists in your home, you'll need to clean out the mold and tackle the source of mold growth. Often, this involves a bathroom renovation that includes proper ventilation, replacement of leaky fixtures, glass shower enclosure installation, and flooring repair; all of these factors will prevent the regrowth of mold by keeping bathroom moisture levels manageable.
Heating and cooling mold problems are more common than you think. With the favorable humid environment and anything that can be converted to food, molds are practically present everywhere. Molds might even be present inside your HVAC system. Thus, you should minimize the dirt and debris that they can use for nutrition. Keep your filters and coils clean and dry. Heating repair and HVAC system should be optimized to maintain humidity at low levels to kill molds already present in your home or building.