A properly sized ac filter will save you tons of money and headache.Most ac problems start with incorrectly sized or dirty filters. A properly sized filter will completely cover the return coil, not allowing air to go around the filter. A clean ac filter will allow air to flow thru unrestricted. If a filter shows signs of wear or visible dirt,it's time to replace. A standard filter should last 2-3 months. Running a ac system with a dirty filter decreases the efficiency and puts a heavy strain on the blower motor ,which causes premature motor failure. A good schedule is a must for filter changes.Comment which filter work best for you or which ones are not so good.
Proper filter size and filter changes are important
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