DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (
-   HVAC (
-   -   Low air flow (

splitz 07-25-2010 06:18 PM

Low air flow
I hope someone can point me in the right direction. I've got an airflow problem on the second floor of my house. Here is a picture of how it gets distributed:

There are 7 vents that feed from the square duct using the soft duct stuff. I was thinking if I swapped out the soft duct for hard duct, and did something about the extra foot of duct that feeds the branches I would have better airflow.

Any thoughts? I really appriciate the help, especially since it's been about 100 degrees and humid in VA!

beenthere 07-25-2010 07:27 PM

Switching to hard duct. Will increase it some. But may not be as much as you want.

As a test. Remove your air filter. and see if air flow increases. If not. Then try running it with the blower panel off, and see if it increases.

You may not have enough return to get good air flow.

splitz 07-26-2010 07:19 AM

beenthere - Thanks. I'll start with that, it seems a much easier test than replacing the supply lines. The only problem is if that is the problem, I'm sure fixing the returns is going to be a PITA!

beenthere 07-26-2010 11:19 AM

Sometimes fixing the return is hard. Nut most of the time, its easier then fixing a supply.

All times are GMT -5. The time now is 03:38 AM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Search Engine Friendly URLs by vBSEO 3.6.1