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How often should I change the Air Filter? - Eric Kjelshus Energy Heating and Cooling
If you have a fiberglass throwaway filter, you should change it every 30 days. The filter helps keep your duct system, motors, and coils cleaner longer. Here’s a great tip for remembering to change the filter: When you get your monthly electric bill… change the air filter. If you do not change your filter, your …