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Air filters also protect heating and cooling system components from accumulating dirt. If the filter becomes too dirty, air will go around the filtration section and deposit dirt directly on system components; this can reduce equipment performance and indoor air quality. This will increase maintenance significantly because more time and expertise will be required to clean system components than what is needed to change filters.
The U.S. Department of Energy (DOE) recommends that you check filters once per month, especially during periods of heavy use, such as winter and summer. The DOE estimates that a properly maintained filter will provide energy savings of 5% to 15%. If the filter is dirty, change it. At a minimum, conventional filters should be changed every three months. Other types of filters need less frequent replacement. Media air filters, for example, have a high capacity and only require changing once per year. Check manufacturer guidelines for specific filter maintenance recommendations.
In addition to replacing your air filter regularly, the following tips will help you reduce your heating and cooling costs all year long:
If your heating or cooling system is over 15 years old or requires frequent repair, consider replacing it with an ENERGY STAR qualified unit. ENERGY STAR certified heating and cooling systems are more energy efficient than standard models.
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