Air filters need to be changed at least every three months. If it’s a lower grade filter, it should be changed once a month. Filters make the air better and keep the equipment cleaner. Once it gets past the filter the dirt goes into the blower. Dirt in the furnace parts can cause a problem.
A sign that things aren’t as clean as they could be typically shows up the first time a furnace is turned on for the season. Homeowners may smell a slightly burnt smell in the air.
Signaling the presence of dust or dirt, the smell usually dissipates in a few minutes. If it doesn’t, it may be a good idea to shut down the furnace and call a professional.
Remember, a clean operating system makes for a better operating system.
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