year condensate overflow pan required?

[CheckItOut]

Just curious if anyone knows when a condensate overflow pan was required with an air handler in attic or interior closet. Inspected a 1994 house with no pan and I could not tell where one had been nor did I see evidence of a second drain line.

[Nolan Kienitz]

I would be reasonably safe in saying that most manufacturers have always recommended drain pans under the EVAP coils of unit placed in attics over living spaces or in hall closets where a leak could possibly damage property.

Manufacturers seem to be a tad more stringent that the code folks in many instances.

[CheckItOut]

True. My 2004 house did not have a condensate drain line in the attic plumbed directly outdoors. Primary line dumped into overflow pan which drained through a pipe above a second floor window. This then dumped water on top of the main electrical panel. No idea why original owner left it like this - could hear water dripping all night long in the master bedroom as it hit the panel.