Condensate drain repeatedly clogs, causing water to back up into the Triangle Tube water heater.

Safety: Condensate is mildly acidic. Wear gloves and eye protection.

• 1. Verify trap orientation: Ensure the condensate trap is installed upright and filled with water to maintain a seal.
• 2. Check slope: Confirm that the condensate line slopes continuously downward to the drain with no sags.
• 3. Clean regularly: Remove and flush the trap and tubing with clean water. For heavy biofilm, use a mild detergent solution and rinse thoroughly.
• 4. Increase tubing size: If the line is very long or prone to clogging, consider upsizing the tubing and minimizing elbows.
• 5. Professional modification: A technician can re-route or re-pipe the condensate system to meet best practices.