Zoning options

GlenWillJuly 22, 2014

I have thought about zoning my AC for a while, to better balance the upstairs and downstairs, particularly in the summer. I recently found out my neighbor had it done, and is happy with it, which renewed my interest in getting it done or doing it myself. I have a 3-5 degree difference upstairs compared to downstairs.

In researching it further, I see that there are concerns about the decreased flow across the coils and possible higher pressure. Some say to put in a bypass damper, other say that just causes more problems.

So it occurred to me that I could do a partial damping. Perhaps half of the downstairs ducts and half of the upstairs ducts, focusing on rooms that have multiple feeds. This would mean that if only one zone is on, I'd have about 3/4 of the normal flow, with the zone currently on plus 1/2 of the other zone that is does not have dampers.

It would seem like this would give me a better temperature balance, without reducing the airflow so much.

Am I missing something wrong with this approach? Would having half of each floor unzoned eliminate any benefit?

Glen

Thank you for reporting this comment. Undo
mike_home

Do you have a variable speed furnace? If not then you are going to have to have some sort of bypass in order to the air flow at the proper rate when only one zone is calling for heating or cooling.

    Bookmark   July 23, 2014 at 2:07PM
Sign Up to comment
More Discussions
Need help choosing an efficient HRV Air Exchanger
Hi, My house as a total area of 2300 square feet (1150*x)....
Jim_Lafleur
Advice on HVAC & Insulation issues
I have a few questions that I would love to have input...
cinamn808
2 Stage vs 1 Stage
I am trying to decide what HVAC replacement system...
cms9323
Insulating floor on my raised home in Louisiana.
We recently installed solar panels on our home. We...
ktyler1320
Need help with my Heat Pump
I have a 2 ton carrier air handler that is 410-A compatible....
Jason Johnson
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™