Heat index of 111° today. If you’re in Krugerville and your AC has been running nearly nonstop since this morning, I want you to do one thing before you keep reading: go look at the ceiling around your air handler, and check the floor near your indoor unit for any dampness. I’ll explain why in a second, but that quick look could save you a very expensive week.
Why heat advisories are hard on more than just your electric bill
When the heat index climbs into the low 100s, your AC doesn’t just run longer, it runs harder. More runtime means more condensation. That’s simply how the system works: humid air passes over a cold evaporator coil, and water collects. On a normal day, that water drains away quietly through a small PVC line and you never think about it.
But on days like today, when the system barely gets a break, that condensate line is working overtime too. And here’s the part that catches people off guard: a condensation drain doesn’t fail loudly. It clogs with a little algae or dust, or a joint loosens just enough, and instead of draining outside, the water backs up into the drain pan, then over the edge of the pan, then into your ceiling, your wall cavity, or the subfloor under a closet unit. Nobody hears a pipe burst. Nobody sees a puddle in the driveway. The first sign is often a stain on the ceiling, or a musty smell, days after the actual leak started.
What to check today, without any tools
- The ceiling or wall around your indoor unit or air handler. Look for a discolored spot, a soft patch of drywall, or peeling paint.
- The drain line itself, usually a white PVC pipe running from the unit to the outside of the house. Is water actively dripping from the end of it? That’s normal. Is it dry when the AC is clearly running? That could mean a clog upstream.
- The floor near a closet or attic unit. Carpet or laminate that feels slightly spongy or cool to the touch is worth a second look.
- The secondary drain pan, if your unit is in the attic. Many systems have a backup pan with its own overflow switch. If that pan has water sitting in it, the primary line is already struggling.
None of this requires taking anything apart. It’s a two-minute walk-through, and on a day with a heat advisory in effect, it’s worth doing before you go to bed tonight.
Why “it’s just a little water” is the trap
A condensation leak is almost never dramatic, and that’s exactly what makes it dangerous. Water doesn’t need to flood a room to cause real damage. It just needs time and a place to sit. Drywall, insulation, and subfloor all hold moisture quietly, and by the time it’s visible or smells musty, it’s usually been sitting long enough to invite mold growth into the mix.
This is the same myth I talk about a lot: surfaces dry first, and what’s underneath can stay wet far longer than you’d expect. A slow drain leak behind a wall can go unnoticed for a week or more during peak AC season, and that’s plenty of time for a small problem to become a real one.
If you find water, here’s the honest first move
If you find active water or a soft spot today, the priority is simple: get the moisture stopped and get air moving on it as soon as you reasonably can. Don’t wait to see if it dries on its own, and don’t assume a fan from the closet will handle it if it’s been sitting a while. Hidden moisture behind drywall needs real assessment, not a guess.
I’m not going to tell you it’s no big deal if it’s small, because sometimes it genuinely isn’t. But I’d rather you have someone look at it and hear “you’re fine” than find out in three weeks that it wasn’t.
We’re right here in Krugerville’s backyard
Merlene Mitigation is based just down the road in Pilot Point, and North Texas heat waves like this one are exactly why I keep an eye on drain lines and hidden moisture for folks in Krugerville and the surrounding area. Right now, through August 6th, 2026, I’m offering a free water damage inspection — no pressure, no obligation, just an honest look so you know where you stand.
If you found something today, or you just want a second set of eyes before this heat lets up, call or text me directly. I answer my own phone, I’ll walk you through exactly what I find, and you’ll never get handed off to a stranger.
And if nothing’s wrong today but you want to be ready in case it ever is, I put together a free guide called “The First 24 Hours After Water Damage”. It’s the kind of thing worth reading on a calm day, not a panicked one.
-Ally