04/01/2026
🔥 Code 11 on a tankless? Sometimes it’s more than just an error code.
This customer in Cypress, Texas called us out for a tankless water heater showing a Code 11 error.
After removing the front panel and inspecting the unit, we found the real issue — a leaking heat exchanger that had already damaged multiple internal components.
We contacted the manufacturer to check warranty options, but unfortunately the unit’s warranty was voided due to lack of maintenance.
At that point, the best solution was replacement.
We upgraded the home from a 7.5 GPM tankless water heater to a 10 GPM unit, giving the customer:
✅ Higher flow capacity
✅ Better performance for multiple fixtures
✅ Reliable hot water throughout the home
This is exactly why annual maintenance on tankless water heaters is critical — it protects the unit, the warranty, and your investment.
At All The Time Plumbing, we specialize in:
🔧 Tankless water heater repair and replacement
🔧 Code diagnostics (Code 11, ignition failure, etc.)
🔧 Heat exchanger issues and leak detection
🔧 Tankless flushing and maintenance
🔧 High-capacity tankless upgrades
🔧 Emergency plumbing service (24/7)
Proudly serving Cypress, Northwest Houston, Jersey Village, Tomball, and Greater Houston.
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