Hello there. I just had a new 2 1/2 ton Westinghouse unit installed in my home. It replaced a similar type unit which functioned well for 21 years. The problem I am having is that the unit sweats on the outside and inside on the circuit panel. No one seems to know how to fix this. This is what has been done to date.
1) Seal around the plenum in the attic. Did not work
2) Remove insulation around the plenum in the attic. Did not work.
3) Checked to make sure there was not too much refrigerant
4) Company performed many other checks with gauges etc that appear to show the equipment in good working order.
All parties involved know that the sweating is bad, especially on the inside of the unit but I have no answers on what to try next. The dealer where the installer purchased the unit from suggested that I install a vapor barrier in the attic and this will fix it. I hate to spend more money if I'm not sure this will resolve the problem. Any insight anyone can provide will be greatly appreciated.