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Three years of changing furnace filters wrong
I only realized last week that I've been putting my furnace filter in backwards since I bought this house in Decatur. The arrow was pointing toward the unit instead of away from it, and my AC guy laughed for a solid minute before showing me the dust buildup on the wrong side. Has anyone else made this dumb mistake?
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ninam762mo ago
Mark the arrow with a Sharpie so you never forget again.
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