What happens to your AC after Water Damage
Heating, Ventilation and Air-Conditioning (HVAC) systems, when directly contacted by Category 1 water, can cease to operate, or they can function inefficiently or spread excess humidity throughout both affected and unaffected areas of a structure. If contacted directly by Category 2 or 3 water, they can spread contamination to unaffected areas. Even if an HVAC system is not directly contacted by water, when operating, it can spread humidity or contamination from affected to unaffected areas. Further, microbial growth from other causes can be carried to the interior of HVAC system components where it can accumulate and degrade HVAC component operation.
In addition, HVAC systems can have a major impact on controlling the conditions that lead to water vapor condensing on surfaces. The design, installation, operation and maintenance of HVAC systems are important factors in controlling microorganism germination, growth, amplification and dissemination. When HVAC system operation is affected, this can result in poor environmental control that allows widespread condensation to form. This can lead to the spread of contamination by the system and increase the scope of the microbial problem by dispersing contaminants throughout a building.
Types of HVAC systems include residential, commercial and industrial. In a typical system, the fan or blower circulates air from occupied space through the air filter, return grills, return ducting, heating and/or cooling coils, and through the supply ducting into occupied space. The system’s mechanical components can be located in various areas of the occupied space, outdoors, or in other locations. Residential systems vary in configuration and type; however, most HVAC systems are generally similar in design.
Mold doesn’t get filtered
Many airborne spores are typically in the range of one to five micrometers in diameter, but they may appear in clumps or in growth structures two to ten times that size. Airborne microbial fragments, such as hyphae, may be much smaller, measured in sub-micron sizes, and they also may agglomerate forming larger clumps. Conventional HVAC system filters of MERV 6 rating or less are not effective at stopping the distribution of particles in this size range throughout an HVAC system. In systems with filters of MERV ratings of 11 or higher, a substantial amount of bioaerosol is captured. Completely containing or eliminating contamination in HVAC systems requires HEPA filtration, which is 99.97% efficient in removal of particles at 0.3 micron aerodynamic diameter, and more efficient in particles both larger and smaller.
Always call a professional after a water damage incident. Call Dririte of Tampa today (813) 283-2202