If your AC has been running nonstop since sunrise, you’re not imagining it. With the heat index sitting around 108° here in Pilot Point this week, air conditioners across Denton County are working harder than they’ve worked all year — and that’s exactly when condensation leaks turn into water damage calls.
Here’s the good news: a five-minute check today can save you a soaked ceiling or a ruined closet floor tomorrow. Let’s walk through it.
Why extreme heat causes AC overflow
Your air conditioner doesn’t just cool air — it pulls moisture out of it, and that moisture has to go somewhere. Normally it drains quietly through a condensate line to the outside. But when your system runs for hours on end without a break, like it’s doing right now in this heat, it produces more condensation than usual, faster than usual.
If that drain line is even partly clogged with algae, dust, or a buildup of gunk, the extra water backs up. It fills the drain pan, overflows, and finds the nearest path down — usually through a ceiling, into a closet, or along a wall you won’t notice until the stain shows up.
This is the single most common cause of water damage calls we see during a North Texas heat wave. It’s quiet, it’s slow, and it usually starts long before anyone notices.
Your same-day heat wave checklist
Take ten minutes today, while it’s still light out, and run through this:
- Find your indoor AC unit (usually in a closet, attic, or utility room) and look for a drain pan underneath it. Is there any standing water?
- Check the condensate drain line — the PVC pipe running from the unit to the outside. Is water actually dripping out of it, or has it gone dry when the system is clearly running?
- Look up. If your AC is in the attic, check the ceiling below it for any soft spots, discoloration, or a faint water stain. Catching this early is everything.
- Check the safety float switch, if your system has one. It’s a small device in the drain pan designed to shut the AC off before it overflows. If yours doesn’t have one, it’s worth asking your HVAC tech about adding one before next summer.
- Pour a cup of water into the drain line access point (if you have one) to see if it flows freely. If it backs up, the line may already be clogged.
- Set a phone reminder to check again this evening. Peak stress hours are the hottest part of the afternoon into early evening — exactly when a marginal clog turns into an overflow.
If you find water — what to do first
If you catch standing water in the pan or a wet spot on the ceiling, don’t panic, but don’t ignore it either. Turn the AC off at the thermostat to stop adding more water, and if it’s safe to do so, place towels or a shallow container to catch what’s already draining. Then get eyes on it — either yours or a professional’s — as soon as you can.
Here’s the honest truth about water and drywall or insulation: it looks dry on the surface long before it actually is. Even a small overflow can leave hidden moisture in a ceiling cavity or wall for days, and that’s exactly the kind of thing that turns a cheap fix into an expensive one if it sits.
I can’t promise a heat wave like this one won’t cause a few surprises this week — but I can promise that catching it early, and handling it right, makes all the difference between a quick dry-out and a much bigger repair.
We’re right here in Pilot Point
Merlene Mitigation is local — based right here in Pilot Point, not a call center somewhere else in the state. If you find water damage from an AC overflow, or you’re just not sure whether what you’re looking at is a real problem, give Josh a call or send a text. He personally handles inspections and can usually be on-site within the hour for real emergencies. No crew of strangers, no guesswork — just one accountable person who’ll tell you straight what you’re dealing with and what it actually takes to fix it.
And if today isn’t an emergency day but you’d rather be ready before one happens, we put together a free guide called The First 24 Hours After Water Damage. It walks through exactly what to do in that first day — worth five minutes now, so you’re not scrambling later.
Stay cool out there, Pilot Point.
-Ally
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