Another FUrnace, AC question need to decide soon

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Old 09-21-04, 04:45 PM
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Another FUrnace, AC question need to decide soon

Do you agree that by having a new furnace in the attic that heats the 2nd floor which would be combined with a new a/c that cools the 1st and 2nd floor that teating or cooling system with a constant volume of air that during certain seasons will have that volume directed to a portion of the house that does not need that much air. The result is noise from the
airflow through the ducts and registers and drafts from too much air.

Or do you believe that

Most v-speed products have different cfm settings for heating and cooling and reduced speed options of either. You could run full capacity airflow when cooling and drop to a minimum airflow in heating, all automatically from the thermostat demand. Combined with an electric zone damper for the first floor that opens only when cooling(again, automatically)and some good design, you could be in business and the a/c will have no effect on the noise of the heating system of the 2nd floor.

Do you agree with this?
 
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Old 09-24-04, 05:06 PM
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attic unit heats upstairs, bottom unit cools both floors?

for sound go with the vs, obviously.

most vs units have 2 fan settings, cool and heat, not sure how much the tonnage varies though
 
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