On Tuesday, June 3, 2014 1:36:54 PM UTC-4, Tony Hwang wrote:
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



Hi,

You may have poor insulation for the ceiling and poor vent for the attic.

That's a good point. If the insulation is inadequate, that could be a
big factor. Adequate venting helps too.

OP didnt' say what the $4K solution from the hVAC contractos was.
One big thing is that frequently there aren't enough return ducts
upstairs. Adding some could make a big difference. But depending on
contruction, sometimes that is impossible or close to it. Sometimes
you could DIY if you have some basic skills and can figure out a path.

Sad thing is that this stuff isn't rocket science and if you do it
correctly before the house is built, it shouldn't wind up screwed up.
But sadly there are plenty of cases where it does. Another solution
might be a mini-split if it's just one or two rooms upstairs that are
a problem.