AirSept’ Cooling Coil Coating helps prevent smells that come from the air conditioning evaporator in hot, humid climates. Beyond the unpleasant odor, the mold, mildew and bacteria that cause the odor can activate allergies, aggravate respiratory conditions and cause skin irritation. This product combines a powerful anti-microbial with a moisture-reducing coating that together prevent moisture buildup and microbial colonization and growth on coated surfaces for up to three years, says the company. Unlike other products, there is no microbial growth and no odor.