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Air register booster fans

Posted on 8/22/23 at 4:50 pm
Posted by SirHoyle
Huntsville, AL
Member since Nov 2011
488 posts
Posted on 8/22/23 at 4:50 pm
I have a weak vent in my daughter’s room and it’s her only vent. Maybe cause the duct runs backwards from air handler. All the booster fans i see say not recommended for ceiling. Is this cause of weight? Has anyone had this problem and what did you do. I haven’t studied on in-line fans. Just the ones that replace the registers.
This post was edited on 8/22/23 at 4:54 pm
Posted by LEASTBAY
Member since Aug 2007
16341 posts
Posted on 8/22/23 at 6:40 pm to
How is a duct backwards?
Posted by calcotron
Member since Nov 2007
10111 posts
Posted on 8/22/23 at 8:15 pm to
I think he means directionally off of the header compared to the other ducts and general direction of the unit. Either way, that header (I may be using the wrong word) should pressure up and send air evenly to the different ducts. If you aren't sure how to work that think and you don't have baffles up there you can play with, a fan to draw it might help. I wouldn't want that drawing when the unit is off, though.
This post was edited on 8/22/23 at 8:16 pm
Posted by lsuwins3
Member since Nov 2008
1874 posts
Posted on 8/22/23 at 9:10 pm to
I’ve researched them some since I have the same issue with one of our rooms . Several to choose from on Amazon. The issue I was concerned about was the plug cord. Where to plug in the attic. They have a thermostat built in and you can set the temperature when they come on and off. Some people complained of the noise. They look to run about $60-70 each. Several reviews to read.
Posted by TheBoo
South to Louisiana
Member since Aug 2012
5398 posts
Posted on 8/23/23 at 9:34 am to
Why not contact a reputable HVAC company to come read the flow of each register and figure out how to balance it out correctly?

Posted by gerald65
Moss Bluff, LA
Member since Jul 2020
710 posts
Posted on 8/23/23 at 1:38 pm to
First think I would check is to be sure that duct is positioned such that it provides a straight path to the vent. ie. no restrictions in the duct.

If this vent is a long way from the A/C unit, maybe a larger duct size [and larger vent] would increase your air flow.

I have a room on the SW corner of the house. The south wall is bricks and during the summer the inside south wall is "warm" to the touch, which keeps that room 2 or 3 degrees warmer. After considering several solutions, I added another vent and ran a new duct. This keeps the room comfortable in the summer and for most of the year I can keep this vent closed.

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