Professionally installed air filtration ensures filters are sized to ensure adequate air flow for a home’s heating and cooling air handler and filter racks are airtight. The correct size helps ensure particles and contaminants in the air stream are effectively captured while delivering a comfortable flow of heated or cooled air. This also avoids overtaxing the air handler fan that supplies conditioned air to the home. Professional installers will locate the filter box in an easily accessible place, to encourage regular replacement. Airtight filter racks ensure the comfort system operates more efficiently without excessive leaks.