DIRTY FURNACE FILTER?
The HVAC filter prevents dirt, dust, and allergens from blowing around your house. When it’s not cleaned or changed, the furnace has to work harder to do its job, thus shortening the lifespan of the furnace and increasing energy costs. Worst of all, it means you and your family is breathing in dirty air. Change the filter every two to three months (or more if you have pets) for healthy air quality and energy efficiency.