View Full Version : Help with balancing my duct work..
07-16-2011, 08:00 PM
Okay guys I'm a pro, But I do commercial refrigeration. So I don't know a whole lot about duct work and such. Here's my issue. One side of the house is comfortable, and the other side always is the opposite. I don't have duct work collapsed. I have a 4ton lennox. How can I test to see if I have too much air pressure on one side instead of the other. What should I see coming out of the returns CFM wise. Thanks guys.
07-16-2011, 09:40 PM
Move to bldg sci thread?
07-16-2011, 09:41 PM
Use a manometer to measure the static pressures. the returns should be bringing roughly 1600 CFM back to the furnace/air handler.
07-16-2011, 10:21 PM
can u give a more detailed description of system....... lennox XP 13? 14? 15? split system? pack? A/c only? heatpump? gas? duct design??? RA air sizing?
07-16-2011, 10:50 PM
...System location in home, location of problem areas (relative to system), cycle times, problem description, size of house, insulation levels,...
07-17-2011, 01:57 PM
Thats what I see from here!! So confirm that there is more than one
return? It it a ranch or big up/down layout?
poor man test-- is tape a piece of paper at the register and measure how
far it blows up from the floor!! Course that couldnt be you if your
a commercial refer guy!! [laugh here]
Please get back to us and tell us what you did to fix it.
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