I have central air, an old rooftop unit circa 1982. It's BDP (Carrier) model 585CJ030050. I just moved into this condo, and there is no documentation or information about this unit other than the model number on the unit itself. Thanks to a helpful gentleman here on FixYa, I was finally able to locate the filter, which slides out from between the unit and an air duct.
This is where my current question comes in! The old filter was a weird, bidirectional-looking thing. The replacement I bought is pleated, and has to face a certain direction relative to the airflow. But which way does the air flow? My theory is that the air is hitting the filter on its way INTO the unit from an intake inside the house. My wife's theory is that the air is hitting the filter on its way OUT of the unit as it blows into the house.
Which way makes sense? Or are we both nuts? (Well, we are, but that's beside the point!)
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Re: Which way does the filter face?
You guys are not nuts. It is hard enough just to get people to change the filters in the first place:) You are right. The filter is filtering the air as it goes into the unit. The little arrow on the filter should point at the unit (away from the duct). Good Luck!
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THE FILTER IS THE AIR FILTER . IN THE RETURN AIR GRILL EITHER IN FLOOR OR IN THE WALL / SOME ARE INSTALLED IN THE UNIT IN THE AIR HANDLER COULD BE INSIDE A CLOSET OR ATTIC OR UNDER FLOOR / FIND AND CHANGE IT . IT WILL BE WHERE THE AIR IS PULLED INTO UNIT ON RETURN SIDE AS I SAID SOME IN FLOOR GRILLS , SOME IN WALL GRILLS . SOME IN CEILING GRILLS . JUST TAKE OUT AND GOTO LOWES OR hd GET SAME SIZE AND REPLACE
567C024RCU In this model number is the # 24. That stands for 24,000 btu's. This is a two (2) ton unit. Has this two ton unit cooled ok in the past? if so replace with the same size. But make sure yo change the indoor coil to match the size "and" efficiancy of the ew unit.
is this unit real old ? it does not come up in my book . the btu is 30000 that is the same as 2.5 ton it may be 6,7 or 8 seer i dont think its a 10 seer because the 10 seer units are listed and yours is not . if this sounds wrong please look up the mod # again and post the ser # too ......... Please if this answer helped , please rate this 3 or 4 stars . and keep me in the paid answer department . A 1 or 2 may knock me down into the unpaid ranks. Thanks Cactus Bob .
If your rooftop unit is self contained with no pipes leaving it except the condensate drain line there should be a narrow removable panel to access where the filters are located. If you have three pipes exiting the roof top unit two will go to an air handler located in the attic of the home. The filters will be located in the air handler.