HVAC Filter for Vents in Home: Which Filter Truly Protects Your Indoor Air?
The filter you can see isn’t the filter doing the work. On a recent Apopka service call, we measured 0.72 inches of water column of static pressure across a homeowner’s return filter. The spec called for 0.5. That filter had gone eleven months. Meanwhile, the homeowner had been swapping out black foam pads on every … Read more