AC System Drain Line Redesign – AC Repair Southlake, TX

📍 Location: Southlake, TX
🏠 Issue: Recurring AC drain clogs causing ceiling water damage
A homeowner in Southlake had dealt with AC system drain clogs and water damage year after year. This time, they called Greentech for a long-term solution.
🔍 During inspection, we discovered the real cause: the primary drain line was missing a P-trap and vent, and their air handler operates under negative static pressure. Without a trap, the system couldn’t drain properly, leading to regular backups and water leaks.
🛠️ Our Solution:
• Cleared the blocked drain line
• Installed a new insulated primary drain with proper venting and a P-trap
• Added a float switch to shut off the system if the line ever clogs again, preventing future ceiling damage
💡 Many AC drain issues stem from improper installation. Negative pressure systems require correct venting and pressure balance to allow drainage. With these fixes, this homeowner now enjoys reliable drainage and peace of mind.
✅ Trust Greentech Engineering Heating and Air Conditioning to solve the root cause—not just the symptom.