TravelTiger
Founding Texas-West Chapter Leaders-Retired
We are in the same situation with our unit - air is cold coming from both AC units but there just isn't enough air flow out of the living room/kitchen vents to keep the unit cool enough in the summer heat in that area. I'd be interested in knowing how to increase air flow- I have checked all the ducts and there are no restrictions, just seems like the blowers are not up to the job or something.
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Since both AC units have their supply and return headers cross-tied, what keeps the air from short cycling between the headers when only one unit is running?
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Can you tell me where you purchased the lower flanged vents?
From www.dwincorp.com, the 1/4" flange. They don't fit the holes exactly. You will have to add your own screws, and create new holes. They do not match the factory vents, so if you are particular, you'll have to get ones for the return side as well. The same filters will fit, but you have to cut the center so the center post (that makes the vent adjustable) can go through it.
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