Showing results 1 - 3 of 3
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A central fan-integrated supply system uses a fresh air intake ducted to the home's central furnace or air handler unit to supply fresh air throughout the home
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A Corsi-Rosenthal Box is a highly effective DIY air cleaner made of easy to obtain materials such as HVAC filters, a box fan, cardboard, and tape
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The blower wheel (fan) on this ductless wall-mounted indoor unit has accumulated dust and mold - a common issue for this design.