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Old 07-27-2010, 11:05 AM   #1
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Zoning and Variable speed


I was just reading more info on zoning a system and I just read something I never saw before...

to have a zoned system your furnance and AC must be:

Quote:
Must be 2-stage air conditioner.


Must be variable speed blower on air handler or furnace.
Is this true?

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Old 07-27-2010, 06:05 PM   #2
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Zoning and Variable speed


Quote:
Originally Posted by BlueBSH View Post
I was just reading more info on zoning a system and I just read something I never saw before...

to have a zoned system your furnance and AC must be:



Is this true?
Nope. Not even close.

It does work better when the furnace and A/C is 2 stage. But not required.

Zoning has been going in long before 2 stage or VS blowers came out.

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Old 07-27-2010, 08:51 PM   #3
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Zoning and Variable speed


Some of the high end products like the Lennox Harmony 3 require a 2 stage furnace and A/C. The bypass damper type don't.
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