Air filters have arrows printed on the sides of them that show you which way they are supposed to be installed.
Cold air return filter direction.
For any air filter whether it be for an air conditioner or a furnace the arrows always point in the direction of air flow.
Let s make this simpler though.
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It is made with electrostatic charge that captures sub micron airborne allergens such as dust pollen pet dander dirt and smoke.
Vent filters can be added to your hvac system at two locations.
The best way to improve the efficiency of your return air vents is to check your furnace filter.
The return duct or the supply duct.
Make the arrows face the ceiling or wall.
The arrows on any air filter need to point in the same direction the air is flowing.
Then replace it with a new one that is sized to fit the opening being sure to orient it so the airflow arrow is pointing in toward the ductwork.
When you install a new air filter into the ac return duct the arrows face inward to specify which way the air is flowing.
Furnace filters should be changed every 6 months anyway.
If the filter is too old it is probably reducing the efficiency of your return vents and you should change it.
Before closing the cover vacuum or wipe off the grill that holds the filter in place.
Assuming your unit is outside or in your attic you want the arrow to face the unit.
These vents are seen in many types of furnace systems although there are alternatives such as drawing air from the outside or from the area around the furnace.
A cold air return is a vent that sucks cold air into a furnace so that it can be heated and brought back to a room through a furnace register.
If the supply ducts are in the floor then the return air should be located up high.
If the supply ducts are high or in the ceiling then the return air ducts or grills should be low on a wall.
Enhance your home s air with this 10 in.
This pulls the air across your body.
If your filter is on the ceiling the arrow should face the ceiling.
These arrows should be pointing in the direction that air flows through your system which is away from the supply ducts and typically toward the blower.
True blue cold air return filter pad.
Professionals tend to recommend a return duct filter more often than a supply duct filter but some believe no vent filter is the best scenario for any hvac system because of increased air resistance.
How can you ensure that you install your air filter in the correct direction.