Booster fan

[Reg1952]

Has anyone ever installed one of those booster fans in your duct work to increase air flow?Just looking to see how noisy they are.I have a pellet stove in my basement and want to run a fan in one of the register lines to bring some heat upstairs.

 

[Zeke]

I've seen in-line one at the HVAC supply house that has variable speed and is uber quiet. Over a hundred bucks, though. I think it's a 6 inch model. You can collar it up or down.

 

[pattenp]

I have 2 of them on duct lines to a Florida room to continually circulate air and put in a switch with an indicator light so I know that they are on because they are so quiet.

 

[mrobins297aaa]

most of the ones I've seen are very noisy.........make sure you get a varaible speed, so you slow it down just incase its noisy.

 

[kbs2244]

Most of the noise will be from the sheet metal vibrating.
Good gaskets (foam) and maybe some adhesive weights

 

[ezzzzzzz]

Duct noise from vibration is good place use damping material found in car stereo applications. I personally use second skin products but other comparable products exist. I used it on the gas pack outside my daughter's bedroom because of noise transmission bothering her at night. A few small pieces placed on flat surfaces and the blower fan housing made a dramatic difference. The more you use the quieter it becomes. Of course, you need to eliminate any loose brackets/joints for it to be really effective.