Furnace Filter Maintenance
Steps
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Turn your furnace or air-conditioner unit to the “off” position.

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Look for an indication on the side of the filter for the direction of air circulation.

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You can see which way the filter needs to be facing by looking at the old filter when you pull out it.

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Insert the new air filter.

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Close the furnace or air conditioning unit.

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Turn the furnace or air conditioning unit back on.
