Carrier / Heil Air Handlers Sweating

[hunter98]

Hey has anyone had any problems with new Carrier / Heil airhandler sweating? Got a new install Carrier 5 Ton that wont stop sweating. Ductwork is properly sized with proper static pressure, have tried relining unit with double insulation and all... Any Ideas? Also noticing gaps between slant coils and the cabinet on new equipment allowing unconditioned air around, have tried factory weather stripping kit but not nearly thick enough.

Didn't know if anyone else has been seeing this?

[Brent Ridley]

Where is the AHU located? Start examining the surroundings. Botched spray foam jobs seem to be the #1 cause around here. But we have a lot of attic installations. The insulation inside the cabinets is a very low rated R-value.

[tedkidd]

Where is the AHU located? Start examining the surroundings. Botched spray foam jobs seem to be the #1 cause around here. But we have a lot of attic installations. The insulation inside the cabinets is a very low rated R-value.

+1
BPI classes taught search out the source before attempting "fixes".

Find the source and you may cure the disease, and be able to abandon perpetually treating symptoms.

Find the moisture source. Where is humid air coming from?

[dgussler]

If air handler is underneath the house, make sure the vents to the crawl space around home are closed off. The air handler is below the outside air dew point temperature.

[codgy]

I have wrapped the air handler with ductwrap before on some wet crawlspace applications, it sounds bad but it works. also seal all seams and doors w/ silicone thin bead, its easier to get the door off than taping.