The Unclog Learning Center
Clear answers for a clearer A/C drain line.
Straightforward help for condensate drain clogs, water leaks and preventative maintenance—written for homeowners, property operators and A/C professionals.
Find the answer by problem
Start with what you are seeing, then learn what causes it, what you can safely check and when it is time to call an A/C professional.
Start with the essentials
Understand how the condensate drain works, why buildup forms and what to do before a small drainage problem becomes water damage.
Latest A/C drain care guides
Original guidance created to help homeowners understand the problem and make a confident next decision.
Why Is My A/C Drain Line Gurgling?
A gurgling A/C drain can point to a partial restriction, trap or vent issue, condensate pump, plumbing connection, or equipment sound. Learn how to...
Why Is My A/C Condensate Drain Pipe Sweating?
A cold condensate drain can collect moisture on its exterior in humid air. Learn how to distinguish normal pipe sweat from a leak, overflow,...
White Slime in Your A/C Drain Line: What It Is and How to Stop the Cycle
White or tan slime in an A/C drain line is usually biofilm. Learn what it means, how to clear an active blockage, and how...
Why Does My A/C Smell Musty? 7 Causes and Safe Next Steps
Quick answer A musty smell when the A/C runs usually points to moisture lingering somewhere it should not. Common sources include a wet evaporator...
A/C Condensate Pump Not Working? Signs, Safe Checks & Fixes
A/C condensate pump full, humming, overflowing, or silent? Learn what the symptoms mean, which checks are safe, when to stop, and how to prevent...
Why Is My A/C Drain Pan Full of Water? Causes, Safe Checks, and What to Do
Water in an A/C drain pan can point to a clogged line, frozen coil, failed condensate pump, or damaged pan. Use these safe checks...
A more automatic approach
Help keep the line clear before it backs up.
Unclog uses scheduled suction cycles to help remove buildup from standard residential A/C condensate drain lines without recurring tablets, harsh liquids or dragging out a wet/dry vac.
- Daily, weekly or monthly scheduling
- App and offline controls
- Manual cleaning mode
- Designed for a fast installation
Useful, not noisy
Get seasonal drain-care reminders.
Occasional maintenance guidance, new how-to articles and important Unclog updates.