We are recommending, you should check your filters on monthly basis. If we are talking about disposable air filters we need to change at least once a month. On the other hand high efficiency filters can be checked every 3 months.
The filters should be checked at least every month,. Keep in mind the Air Filters are the lungs of your home so the cleaner they are , the cleaner is the air you breath. You can use the regular pleated filters or a special filter with carbon pads so they keep the air clean and also free of contaminants.
They mantenance is every year,but filter montly.
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