dual zone A/C

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Old 03-26-05, 02:24 PM
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dual zone A/C

My brother proposed this question to me: Can he use a single unit to provide dual zone A/C and heat? I told him that the only way that it could be done would to have an electronically controlled damper installed to control where the AC or heat would go. Is this correct? I am not too familiar with such products as I do not have this problem since I have 2 seperate units for dual zone. One for 1st floor and one for 2nd floor. Also, if this is possible, is it economical or would it just be cheaper to have 2 units installed? Please be aware that all duct work will be new since he does not currently have forced air heat and does not have any type of central AC. Any help on this is appreciated. Thanks!
 
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Old 03-29-05, 05:36 AM
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Yes it's possible and people do it. If done properly it will function just fine but finding a contractor that truly knows how to do it right may be a chore.
 
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Old 03-29-05, 09:45 AM
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Wink

Like said yes it can be done but dont do it. When you lay out the duct with the dampers in them . You have to built in a by pass damper also to make up for the bigger blower in the unit if just one damper is open. So you see some times the heat or air you pay for is like going around and around in the duct work.
So yes it can be done. But with two units you dont have as many controls there . Less amp draw for just one zone to run.Also if one goes out you have the other as a part back up.

ED
 
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