Protecting and improving the quality of the air inside your home is an important part of comfort and health. It’s almost as important as caring for the furnace keeping you warm in winter.
But often people assume their homes have a decent defense against unwanted particles circulating through the ventilation system because they have a furnace filter. But this is a misunderstanding about what the furnace filter (or filter for another forced-air system, such as a heat pump) actually does. If your home is suffering from low indoor air quality that’s making your winter unpleasant, you’ll need different types of filters or other IAQ products.