Problems with running attic condensate line drain out the soffit on the side of the house (3 floors up)? Condensate line is leaking and I'm trying to avoid destroying walls to find the leak.
An A/C system in an attic usually has two condensate lines. One is the Primary line. The other is a Secondary line. The primary is usually ran to a main plumbing drain. The secondary line is ran to a Conspicuous spot. A spot that is EASILY seen. If the Main line plugs up, then the "overflow" secondary line will start to drip. this is to let the homeowner know there might be an issue with the the condensate or with the coil itself. If this is the case I would have a Tech come take a look at the system.
The secondary line is a safety device to help keep condensate liquid from leaking into the structure of the home.
Hope this helps.
Your best bet is to find the closest interior drain and tie into it. I had a similar problem (not a leak--but rather freezing condensate line). I ran a new condensate line through an HVAC cold-air return chase through 2 stories and into my basement floor drain. The job was surprisingly simple and easy to do. (If you don't have a cold-air return chase, it may be impossible for you.) It will never freeze again. I put one of these in-line to avoid HVAC issues and provide for easy maintenance: