Primary and secondary drain lines connected?

[ddivito (Dennis DiVito, VA License # 3380 000170 NRS)]

@dvandermeulen

Always was under the impression that the secondary should be its own line in case the primary becomes clogged

If the lines are not separated, it is not possible for the homeowner to know which aspect of the system is draining water, the condensate drain or the pan. If it is the pan, then the unit needs servicing. I agree that a float switch should be installed on attic air handlers too.