How often should a standard throw a way filter be changed on my furnace / air handler?
Your filter should be changed about every four (4) weeks. A dirty or clogged up Filter will not only cut down air flow and efficiency, it can also damage your Equipment. If your filter is not a disposable, follow the manufacturers Advise for cleaning the filter. If it is a washable filter, make sure the filter is completely dry before you reinstall it.
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