On Tuesday, June 3, 2014 10:53:33 AM UTC-4, wrote:
On Friday, June 26, 2009 12:12:35 PM UTC-4, Christopher Nelson wrote:

I have a room that never seems to get enough heat or AC. I have a

split level. The furnace is below the family room and the cold/hot

room is above the family room. You'd think that'd be a short-ish run

of duct work but it does bend a couple of times. I'm thinking of

putting a booster fan like http://www.comfortgurus.com/product_...roducts_id/563

in. Do they work? Any comments on the brand or model I should be

aware of? I'd rather walk into my h/w store or home center and go

home with one but I can't find one locally. Is that to be expected or

have I just looked in the wrong places?



my house if very old i can only fit a 9 inch duct upstairs, in the summer temps would never go under 76 77 degrees i talked to 4 hvac specialist they all said it would cost over 4000 dollars to fix the issue. well i decided to try something a little different i used a 10 centrifugal fan pumping 1100cfm used an ribu1c which is just a relay powered of the thermaustat and just like that problem fixed my temps now hover at 68 plus the fan is whisper quiet. dont listen to these hvac people all they wanna sell you is an expensive piece of tin metal, my setup has been running for 2 years now no issues and also have installed it on 4 friends systems with no issues

Do you have a link to the blower you added? There are
various types. I added one of the squirrel cage ones where
you cut a hole in the bottom of a rectangular duct. I thought
it helped, but years later I bought one of the air flow measurement
instruments and measured the air flow with it on and off and there
was virtually no difference. I think it may depend on what kind
of blower you install.