Why Is My Furnace Filter Black?
Inside your home’s heating and cooling system, you’ll find an air filter that protects the unit and keeps the indoor air quality clean. Although the filter is out of sight and out of mind, it’s important to keep an eye on it. While it’s normal for a dirty air filter to look gray or off-white, a black furnace filter can indicate a serious problem. Our technicians can help you get to the bottom of the problem with our reliable heating repair services. If your air filter is black, it may be caused by one or more of the following: Air...
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