Condensate Leak in the Attic in Newark

Condensate Leak in the Attic in Newark

Newark housing is largely 1960s through 80s tract construction, and a lot of those homes have the air handler in the attic with a condensate drain that is as old as the house. The coil pulls moisture out of the air whenever the AC runs, and that water drains by gravity through a PVC line. After thirty-plus years of biofilm building inside that pipe, the line narrows and eventually plugs. When it does, the water fills the emergency pan and, if the float switch does not cut the system, finds the ceiling below.

Newark sits in a bay-influenced moderate climate, summer highs typically 75 to 85 degrees, so AC runtime is modest. That keeps the condensate volume lower than a hot inland city sees, but it also lets a partial clog build slowly and quietly. By the time the pan overflows, the drain has usually been struggling for a while. The secondary pan and float switch are the backstop, and on original tract-home installs those parts are often the same age as everything else and just as tired.

This is one of the more affordable repairs we do, as long as it is caught before the drywall soaks. A clog gets cleared and flushed. A stuck float or a rusted pan is an inexpensive part. We diagnose the actual cause first, then put the number on the written estimate, and on systems this age we will tell you honestly where the rest of the unit stands. The $75 diagnostic gets credited toward the repair if it runs over $200.

Common causes

Decades-old drain line clogged with sludge. Thirty-plus years of biofilm finally plugs the original line. We clear it with a vacuum at the termination, flush from the coil, and confirm the full run carries water freely again.

Emergency pan overflowing under the attic handler. The secondary pan is a backup that fills only when the primary path has already failed. Water sitting in it is the warning sign. We clear the real blockage and inspect the aging pan for rust-through before we sign off.

Float switch worn out or never installed. On original tract installs the safety float is often the same age as the system, or was never fitted at all. A switch that is missing or stuck cannot stop a leak. We test it by hand and, if it is gone, write the cost of adding one into the estimate.

Rusted or cracked primary pan. An old coil pan corrodes and lets water bypass the drain. We inspect with a light and mirror and replace a compromised pan, because a patch on a coil pan does not hold for long.

Sagging or flat drain run. Years of attic heat let an old PVC line sag, so water pools instead of draining. We check the pitch with a level and re-hang the line to fall steadily toward the outlet.

How we diagnose it

• Pinpoint the real water source among the ceiling, the emergency pan, and the coil cabinet before opening the system.
• Test the float switch by hand to confirm it shuts the aging unit down as it should.
• Vacuum and flush the original drain line end to end and verify a clean run at the termination.
• Inspect the primary and secondary pans for rust and cracks, which are common at this system's age.
• Check the drain-line slope and re-pitch any sagging or flat sections.

$75 diagnostic, credited toward any repair over $200. You get a written quote before any work begins.

Condensate Leak in the Attic in Newark: common questions

Nearby and related

Condensate Leak in the Attic near Newark: Fremont · Union City · Milpitas .

This is usually a ac repair in Newark job. See our ac repair overview or the Newark service area.