What Do Furnace Filter Arrows Mean?
October 18, 2018 • Furnaces
Not every furnace filter has an arrow stamped on its side, but when you do see it, it indicates which direction the filter has to face. It always points to the direction of the furnace’s air handler or blower compartment. Even though the filter may look the same on each side, there are differences that affect how it lets air through it and into your HVAC system.
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