Today, I had my installor, State inspector and a Waterfurnace field consultant to our home. It's taken a year of on going repairs, to find the problem. I have a damper in my attic for zone 3. The
14'' round supply runs out of the air handler in my crawl space, to a damper in my attic. They found a major leak between the two. On a short term fix, they will be moving the attic damper to the crawl space. The next step is taking out sheetrock and sealing the leak. I hope this will fix the problem. Thanks to the group for your input. I still think the 14'' round supply is to small for a 6 ton unit but I'm not a HVAC expert. Thank again.- posted
16 years ago