Showing results 1 - 28 of 28
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A comparison of a dirty furnace filter on left and clean filter on right. Dirty filters block airflow and make the furnace or air handler work harder.
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After inserting the new filter, replace the filter slot cover to minimize air leakage and heat loss.
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Air seal all holes and seams in the furnace cabinet with mastic, foil tape, or putty
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Dispose of used filters in the garbage or purchase washable, reusable filters if desired and available for your furnace or air handler.
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Furnace filters come in many sizes; verify the correct size when purchasing for proper fit in the filter slot.
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Insert the new furnace/air handler filter in the filter slot of the furnace or air handler with the arrow pointed in the direction of air flow.
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Remove the plastic wrap, but not the cardboard frame, before installing the furnace/air handler filter in the filter slot or above the return grate; note, the metal wire over the filter fabric can be very sharp.
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Right – All of the cabinet seams in this HVAC air furnace are sealed with an approved metal tape.
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Right – HVAC furnace filter is properly installed in cabinet with gasketed cover to prevent air leakage
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Right – Open web floor joists can provide a space between floors for HVAC ducting.
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Right – This sealed combustion gas furnace has a fresh air intake with an electronically controlled damper.
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The furnace filter slot cover should fit tightly to minimize air leakage but it should not be taped or caulked to enable frequent filter replacements.
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This new filter is inserted into furnace filter slot on the return side of the furnace with the arrow on the side of the filter frame pointing in the direction of airflow, which is toward the furnace.
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Wrong - The furnace intake and exhaust are too close to each other and are missing rodent screening.
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Wrong - The furnace intake and exhaust are too close to each other and should be facing different directions.
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Wrong – Seams in the furnace-to-AC connection at the air handler are not sealed.
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Wrong – Two combustion appliances are sharing a flue which could lead to backdrafting if one appliance is updated to a direct vent appliance and disconnected from shared chimney.