AC Drain Line Clogs
Protect your home from
A/C Drain Line Clogs in Katy
What They Are, Why They Happen, and How Mercy Plumbing Solves Them
When your air conditioner is running, it does more than just cool the air—it also removes humidity. That moisture collects in a drain pan and flows through a small PVC pipe called the condensate drain line. But when that line becomes clogged, it can lead to water leaks, ceiling damage, mold growth, and even A/C shutdowns. At Mercy Plumbing, we help homeowners in Katy and the surrounding areas stay cool, dry, and protected by offering professional solutions for A/C drain line clogs.
What Is an A/C Drain Line?
Your air conditioning system pulls moisture from the air during normal operation. This condensation collects in a drip pan beneath your evaporator coil and is channeled out of the house through a condensate drain line—usually a small PVC pipe that exits near your outdoor unit.
It’s a simple but essential part of your cooling system—and when it gets clogged, it can cause big problems fast.
Is your AC drain line clogged? Do not wait until it overflows the drain pan, contact Mercy Plumbing today at (832) 876-9498.
What Causes an A/C Drain Line to Clog?
Over time, several things can build up inside your drain line:
- Algae and mold thrive in the moist, dark environment.
- Dust and debris from your air handler can collect in the line.
- Rust or insulation particles may fall into the drain pan.
- Bacteria and biofilm can thicken and restrict water flow.
Eventually, the drain line becomes completely blocked, forcing water to back up into the system or overflow onto your ceiling, floor, or attic insulation.
Signs Your A/C Drain Line Is Clogged
- Water leaking near the indoor unit
- Musty smells coming from vents or around the system
- System turning off or showing error codes
- Overflowing drain pan (late sign)
- Visible water stains on the ceiling (really late sign)
How Our Plumbers Solve A/C Drain Line Clogs
At Mercy Plumbing, we know exactly what to look for and how to fix it—quickly and cleanly. Our A/C drain line services include:
Drain Line Clearing – We use professional tools to flush or vacuum the blockage from your drain line. This restores proper water flow and prevents further overflow or damage.
Drain Pan and Line Cleaning – We’ll clean your drip pan and clear out any mold, algae, or sludge that has collected, ensuring your system runs more efficiently and safely.
Emergency Overflow Response – If water is already leaking or damaging your ceiling, we can shut off the system, mitigate the leak, and fix the root issue.
The Mercy Valve – We offer a product that will keep your AC drain valve free of clogs by cycling municipal water every 12 hours. It helps keep your drain line clean and clear of harmful bacteria and mold as well as prevent back-ups. Click here for more information
What Can You Expect from Us?
Unmatched Quality & Values
24/7 Emergency Service
Did your sewer back up in the middle of the night? Don’t worry—we have you covered at all hours of the day and night.
100% Money-Back Guarantee
We stand behind all the work we carry out. If you’re not satisfied, we’ll gladly remove the parts installed and refund your money.
Flat-Rate Pricing
You’ll always know the cost of your service ahead of time because we charge by the job, not by the hour. Rest assured, you’ll never receive a surprise on your bill.
Financing Available
Do you need to get your plumbing fixed now but don’t want to pay for it all up front? At Mercy Plumbing, we offer excellent financing options.
Did You Find What You're Looking For?
Let our team help you during those big plumbing jobs. We offer financing through Greensky.
Who wants to spend money when they don’t have to? Check out our online and seasonal discounts.