If your AC has been running nonstop since yesterday, here’s a number worth knowing: today’s heat index is hitting 108° in Little Elm, and it’s staying brutal through Monday. That’s not just uncomfortable — it’s the exact kind of stretch that pushes AC systems past their limit and turns a slow, quiet condensation drain into a slow, quiet flood.
The good news? You can check the spots that matter in about ten minutes. Grab a flashlight and let’s walk through it together before this heat wave does any damage.
Why extreme heat causes AC leaks
Your air conditioner pulls moisture out of the air as it cools your home — that’s normal, that’s how it works. That moisture drips into a condensation pan and drains outside through a small PVC line. On a mild day, no problem.
But when it’s 106°+ outside, your AC runs longer and harder to keep up, which means it’s pulling more moisture out of the air than usual. More condensation means more strain on that little drain line — and that’s exactly when clogs, cracks, and overwhelmed pans decide to fail.
It’s one of the most common causes of hidden water leaks in North Texas homes during a heat spike like this one, and it’s almost always preventable with a quick look.
The 3 spots to check right now
1. The drain line outside
Find the white PVC pipe near your outdoor unit (or coming out near your indoor air handler). Water should be dripping from it steadily when the AC is running. If it’s bone dry while your AC is clearly working — that’s a red flag. It likely means the line is clogged and backing up somewhere it shouldn’t.
2. The attic or closet air handler
If your air handler is in the attic or a utility closet, check underneath and around it. Look for:
- Water stains on the floor, ceiling below, or nearby drywall
- A damp or musty smell
- Standing water in the secondary drain pan (if you have one)
A secondary pan doing its job is actually good news — it means the system caught the overflow before it hit your ceiling. But if it’s full, that’s your sign the primary line needs attention now, not next week.
3. Ceilings and walls below the attic unit
A small brown ring on the ceiling, a soft spot in the drywall, or paint that looks slightly bubbled are all early signs that water has already found its way somewhere it shouldn’t be. Little Elm homes with attic-mounted units are especially prone to this because gravity does the rest of the work once a drain line clogs.
If you find water
First — turn off the AC at the thermostat until the line is cleared. Running it with a blocked drain just adds more water to the problem.
If you’ve caught it early and it’s just a few drops in a pan, a wet-dry vac and a call to your HVAC tech for a proper drain line clear-out may be all you need. Genuinely — if it’s that small, you don’t need us for that part.
But if there’s standing water, wet drywall, sagging ceiling, or a spot that’s been dripping longer than you realized, that’s different. Water that’s had time to soak into wood, insulation, or drywall doesn’t dry on its own just because the leak stopped. It sits there, and in North Texas heat and humidity, it doesn’t take long for that hidden moisture to become a much bigger — and much more expensive — problem.
Why this matters more during a heat warning
Here’s the part most people don’t think about: during a stretch like this, everyone’s AC is stressed at once. If you do end up needing a restoration pro or an HVAC tech, response times across North Texas get longer simply because more systems are failing on the same hot days. Catching it early buys you options you won’t have if you wait until Sunday night.
I can’t promise a small drip won’t turn into something bigger if it’s given enough time — but I can promise that if you call, you’ll get a straight answer about whether it’s a big deal or not, not an upsell.
That’s the whole idea behind Merlene Mitigation. It’s just Josh — no call center, no subcontracted crew, no guessing who’s actually showing up at your door. One accountable person who tells you the truth, even when the truth is “you’re fine, go enjoy your weekend.”
If you’re in Little Elm or anywhere in North Texas and you’ve found water you’re not sure about, call or text Josh directly. He’s typically on-site within the hour for real emergencies, and if he’s already out on a job, he’ll call you back with an honest ETA.
And if today isn’t your emergency — if you just want to be ready in case this heat ever does cause a leak — grab our free guide, The First 24 Hours After Water Damage. It walks through exactly what to do first, so you’re not figuring it out in the moment.
Stay cool out there.
-Ally
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