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Furnace Filters

When it comes to filters in your furnace, the average furnace filter should be replaced or cleaned every 3 months, unless you have pets, then it should be every 2 months.  If you happen to be doing construction in your home, replacing your filter every month will save you some headaches of calling a tech to come and replace a high limit switch that will fault due to air flow restrictions from your furnace filter being clogged.