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How to open a return air grille to remove the filter?

I have return air grille in my ceiling. I would like to clean the filter but I cannot get the grille open as it seems to be jammed shut. There is a single knob/screw but I cannot unscrew it; it simply spins. I don't want to pull the knob too hard in case the whole unit comes out of the ceiling.

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It may be a tight fit but just pull on the knob firmly

Posted on May 12, 2014


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SOURCE: Should I have a return air grill with a filter?

if the closet the inside unit is in is vented to the house the filter should be inside the unit at the top or bottom.

Posted on Jun 09, 2009

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SOURCE: Furnace seems starved for air

Had this problem last year and found that a well meaning painter had put a filter in the return when he had it off to paint the wall. The system had a filter at the furnace intake that was being changed regularly so the homeowner never looked further. If you have multiple returns, check that one is not blocked in some manner. Mainly think back to what has changed in the home since the issue started that might give you a clue. The HVAC system will only blow a certain amount of air and if there was no issue before and it suddenly started its not in the equipment but rather in the air returning to it.

Posted on Dec 31, 2009

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Rheem Criteria II furnace filter location

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Where is the filter on my actual unit? Have one in the ceiling is that the only one?

If someone has installed a filter return grill in the ceiling, then thats the only one you will have or need. Even if the original unit has a place for the filter, when an over head filter grill is installed, the installer will not put one in the unit as there is no need. Hope this answered your question and good luck!

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Daikin a/c FDY100LVIR N81. installed in suspended ceiling approx 2 mtrs. away from ceiling filter inlet. No filter pad provided for this inlet?. Told to attach a piece of wire to end of unit to withdraw...

Is this a new unit? Lots of units now come with no filter slot. I'm assuming this is above an acoustic tile ceiling. 24x48??? You need to have a 24×24 filter back return grill that lays in the ceiling. That way you change the filter by standing on a ladder. I'm a little confused about the wire thing but, the installer should have thought about how the return air was being filtered BUT, technically not their "responsibility." I'm guessing above the ceiling there is no duct attached to the return side of the unit??? If this were my unit I would buy a filter rack and have it attached to the unit and have my filters the unit. I'm assuming this is a business so what about your fresh air intake?? What filters that??? You need a filter AT THE UNIT. Not attached to a wire or whatever some i*^*t suggested. Hire professionals with credentials capable of doing the job right the first time!

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My AC unit is installed today,but right from starting its suction grill i.e the middle portion is not providing any air/coolling effect. Only the side vertical deflectors are blowing air. What could be the...

If it has quick cool on the ceiling assembly, one side slides open & closed, and the larger area is (where your filter is) is for intake air ( return air).
If it is quick cool ceiling assy, try closing off ends by rotating them, then slide grille over (open) & tell me what happens.

Jul 10, 2009 | Heating & Cooling

1 Answer

Should I have a return air grill with a filter?

if the closet the inside unit is in is vented to the house the filter should be inside the unit at the top or bottom.

Jun 09, 2009 | Heating & Cooling

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