Reduced Airflow Can Kill a Furnace or Air Conditioner. What is the single most beneficial thing you can do to extend the life of your furnace and help prevent costly repairs? It is simply to change your air filter on a regular basis between your seasonal tune-ups . The reason is pretty straight forward. If your filters are plugged the furnace has to work extra hard to circulate air through the system. That translates into shorter equipment life and more frequent repairs. How Frequently Must I Change My Filter? There are several factors that come into play that determine how long a filter will ...
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