We never thought we'd do it, but we just added a fiberglass air filter to the site. These cheap fiberglass filters can lead to dirty coils or system damage. They can also lead to increased energy costs. Most importantly, a fiberglass filter will do practically nothing to protect your family from harmful contaminants recirculating throughout your home's air. See why we don't … [Read more...] about Is our new $2,000 fiberglass air filter worth it?