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Question DetailsAsked on 3/1/2017

can one use the current ductwork when replacing a small HVAC system?

We have a CAC/BDP (Payne furnace and Bryant AC unit) that are approximately 22 years old heating and cooling a 500 Sq Ft guest bedroom and study. They are stacked in a closet below the bedroom and study. Is it possible there are units available that could utilize the current ductwork thereby eliminating costly install costs?

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2 Answers

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CAC/BDP - that is a brand from the past - have not seen them in decades, at least not in my area. Sounds like you ahve had incredible luck with them running this long - the reputation I have heard on them was not great.


Assuming it was properly sized in the first place, sure - unless rusted out or (if plastic flex tubing) falling apart or critter eaten, it is normal to reuse the ducting, with modification to just the first couple of feet as needed to adapt the new unit to it.


I presume the condensor unit/fan for the A/C is outside or at least exhausted directly outside the "conditioned air space" - because if the A/C is totally indoors it is fighting itself, having to recool the waste heat it is ejecting back into the house. Actually, an A/C unit installed inside the conditioned space actually acts as a heater - creating net heat in the house, even though you still get cold air out the ducts. In rare cases that can be desireable - like sometimes it is installed in a cold basement or previously unventilated crawlspace (with separate ventilation to outdoors or humidity control) to heat and dehumidify a cold, damp basement - but generally the waste heat should be vented outdoors.

Answered 1 year ago by LCD

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Answered 1 year ago by Member Services




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