Is Your Black Furnace Filter Dangerous? Learn the Causes from Mold to Carbon Monoxide and How to Fix the Problem Safely
A black furnace filter falls into one of four categories, and three of them require more than a simple swap. We have pulled filters in this condition out of homes across South Florida for years, and the ones that stop us cold are the ones with a greasy sheen, a faint chemical smell, or irregular … Read more