Question for the A/C guys on here.

Opus

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At the end of 2019 my upstairs wasn't getting much air. I have a single system with separate thermastats for upstairs and downstairs. I was told the dampers weren't working and I needed new ones. Seemed reasonable since they were close to 20 years old. This is what they did from the invoice:

"Installation of Honeywell 2 zone damper controller, two ARD16 motorized dampers" and also "Rebuild ductboard supply plenum to allow proper attachment of dampers and duct work".

The rebuild was because the duct work for the upstairs seems to come off every couple of years. They said the builder put it in such a position there was no way to support it. The rebuild was supposed to solve this issue.

A few weeks ago once it started getting up in the 90's here I noticed the upstairs wasn't cooling well, it would be around 85 by 4 or 5pm. The company that did the work back in late 2019 is no longer around due to I think health issues of the owner. I found a place with a great reputation on our local chat board and they had someone out this past wednesday. As suspected he said the duct for the upstairs had come partially off and i was doing a good job of cooling the attic. He said he could tape it up real good but he had no idea how long it would last. He would get back with an estimate to fix the duct coming off issue. I asked about the dampers and he said they were working fine. I get the estimate by email today and this is what it has.

"Honeywell Motorized Zone damper 14" and Ductboard plenum + reattach to the existing 6 ducts"

Sounds to me like they are wanting to replace my dampers which are only 16 months old and according to their tech are fine. Am I understanding that correctly? I really hate I don't know anything about this stuff.
 
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KStatefan

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It looks like in the repair of the plenum they are going to replace the current 16" with 14" which would require new dampers.

I would ask them why the switch? Did they plan that so there was room for supports?
 
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Opus

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It looks like in the repair of the plenum they are going to replace the current 16" with 14" which would require new dampers.

I would ask them why the switch? Did they plan that so there was room for supports?
That did seem odd to me. It is also worded so it sounds like they are only replacing 1 damper and not both.
 

SteveMM62Reef

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If you are having problems cooling the upstairs, I definitely wouldn’t let them downsize the ducts. Also you could end up with more airflow noise from the downsizing. What are the Ducts made of? Metal, Duct board, Flex?
 
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If you are having problems cooling the upstairs, I definitely wouldn’t let them downsize the ducts. Also you could end up with more airflow noise from the downsizing. What are the Ducts made of? Metal, Duct board, Flex?
The duct work looks like the same thing that you use on your dryer to hook it up to the vent. I guess that would be called flex?
 
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