Flooded AC Drain Pan in Georgetown, TX, Active Overflow Causing Water Damage
A drain pan that is actively overflowing is not an inconvenience, it is causing structural damage right now. Water migrating into drywall, insulation, and ceiling joists creates mold colonies within 24-48 hours in Georgetown’s summer humidity. Georgetown’s hard water (Edwards Aquifer, 8-12 GPG) clogs condensate lines 3x faster than the Texas average, making this the most common source of AC water damage in local homes. When a caller tells us there's water leaking from underneath the indoor unit and there's so much water it's already reached the flooring, we treat that as an active-damage call, not a maintenance request.
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📞 Call (512) 798-8094, 24/7Signs to Watch For
Match your symptoms below. Each points to a specific cause. We’ll confirm the exact issue on-site.
| What You’re Experiencing | What It Likely Means |
|---|---|
| Water actively pooling on the floor below the air handler | Primary drain fully blocked, pan overflowing to floor, act immediately |
| Ceiling stain, bubbling paint, or water dripping from the ceiling below the unit | Overflow has already reached drywall or joists, mold clock is running |
| Musty, earthy, or mold smell from supply vents | Mold growth established in drain pan or ductwork, health hazard |
| AC shut off suddenly with no other explanation | Float switch tripped by full pan, drain is completely blocked |
| Standing water visible in the drain pan (over ¼ inch) | Drain line partially blocked, overflow is imminent, clear today |
What's Likely Happening
Georgetown-specific causes based on 3,200+ service calls in Wolf Ranch, Sun City, Berry Creek, and Teravista homes.
Calcium-Blocked Condensate Line
Georgetown’s Edwards Aquifer water carries 8-12 grains-per-gallon of hardness, among the highest in Central Texas. Calcium carbonate builds up inside condensate drain lines at roughly 3x the rate of soft-water areas. A fully blocked line backs water into the pan until it overflows. Annual drain line flushing is the single most important AC maintenance item in Georgetown.
Frozen Coil Melt Surge
A frozen evaporator coil thaws and releases all accumulated ice at once, a surge far larger than the drain system can handle at normal flow. A partially blocked line that handles normal condensate flow will overflow completely during a coil melt event.
Cracked or Failed Primary Drain Pan
Primary drain pans in systems over 10-12 years old develop hairline cracks from thermal cycling. A cracked pan holds no water, condensate bypasses the drain system entirely and goes directly into whatever is below: drywall, framing, or insulation.
Missing, Failed, or Bypassed Float Switch
The float switch is the safety device that shuts the AC off when the pan fills. If it is absent (common in older Georgetown installations), wired incorrectly, or failed in the open position, the pan fills and overflows without any system shutdown or warning.
Inadequate Condensate Drain Slope
Condensate lines require a minimum ¼-inch-per-foot downward slope. Georgetown new construction, particularly in Wolf Ranch and Rancho Sienna, sometimes has lines with insufficient slope. Water sits stagnant, algae grows, and the line blocks at an accelerated rate.
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