Why Is My AC Leaking Outside?

It started with a drip, barely noticeable at first. Just a steady trickle near the gutter that didn’t quite make sense.

The gutter was dry, yet the dripping kept going. Sound familiar? If you’ve spotted unexpected water leaking from a small pipe outside your home, you’re not alone. Many Benbrook homeowners are finding this mystery leak during peak AC season.

Here’s the simple answer: it’s likely coming from your air conditioner’s secondary drain line. That line kicks in when your primary AC drain (usually connected to a bathroom sink) gets clogged. The backup water ends up in a pan beneath the attic unit, then drains outside through the secondary line as a warning sign.

The good news? It’s usually a quick fix. Clearing the primary drain is often all that is needed to resolve the issue. However, you’ll need to know where it connects to your plumbing, typically located under a bathroom sink.

If you need to check the attic for standing water in the pan or inspect the drain line, grab a ladder and a flashlight. And if your ladder isn’t quite tall enough, don’t be shy about asking a neighbor for help. Several Benbrook residents have been there and are happy to lend a hand, a taller ladder, or direct you to someone who can assist you.

Related news:

Clogged Pipes in Bathroom or HVAC? You’re Not Alone. Where to Refill Your Water in Benbrook. Homeowners Question Rising Water Usage—Is It Normal? Residents Face Water Disruptions After Line Break.