Installing a 4-inch furnace filter is a great example of why the way a filter is set up matters just as much as the filter itself. In many homes, a 1-inch filter is placed loosely in the ductwork with a small cutout, which often means it never seals properly. When that happens, air can bypass

When wildfire smoke fills the air — like what we’ve seen recently from the Monroe Canyon Fire — indoor air quality can decline fast. Even if you stay indoors, fine smoke particles can still find their way inside, putting your family’s health at risk. Fortunately, there are simple and affordable DIY ways to boost your