Do I need a SafeHome FiIter for every air return grill?

Our general recommendation is to use a SafeHome Filter in each of your main air returns. Most homes have a large air return in the central living space of each floor with smaller returns in each room. You will achieve best results with one for each vent, but this may not be necessary unless you or a family member is particularly sensitive to chemicals.

We quickly achieved a 40% reduction in VOCs using a SafeHome Filter in one of two air returns. Over longer periods, tests have show reductions of up to 90% as air recirculates through the home.