.webp)
.webp)
.svg){kind=icon}
Tankless Water Heater Repair & Flush in Orange County
As Orange County’s factory certified tankless specialists, KCB Plumbing keeps your system running at peak performance. Our annual flush and diagnostic service help prevent scale buildup, improve efficiency, and protect your investment for years of reliable hot water.
Protect Your Investment and Maintain Performance
Tankless water heaters are built for long-term efficiency, but regular maintenance is key. In areas like Orange County, hard water can cause mineral buildup that clogs the heat exchanger, lowers performance, triggers error codes, and risks your warranty.
Scheduling professional descaling keeps your system running efficiently, protects warranty coverage, and extends the life of your investment.
.webp)
Certified Tankless Repair & Diagnostics
When your tankless water heater stops working, KCB Plumbing provides expert diagnostics and repair for leading brands like Rinnai, Noritz, and Navien.
Our Services Include
.svg){kind=icon}
Error Code Troubleshooting Fast diagnosis and reset of system faults.
Sensor and Igniter Replacement Precise repairs for reliable performance.
No Hot Water Fixes We quickly correct gas, vent, or mineral issues.
Genuine Parts We use manufacturer-approved parts for lasting results.
Why Choose KCB Plumbing for Tankless Service
Certified care. Lasting performance. Complete peace of mind.
Factory-Certified Specialists
Our technicians are certified by Rinnai, Noritz, and Navien to service, repair, and maintain your tankless water heater to exact factory standards.
Peak Efficiency Guarantee
Our professional flushing and maintenance restore full efficiency so your system saves energy and performs at its best.
Warranty Protection
We provide certified maintenance and documentation required by manufacturers to keep your warranty valid and your system protected.
Accurate Electronic Diagnosis
We use advanced diagnostic tools to quickly find and fix issues with error codes, gas flow, or electronic components.
3 Key Benefits of Routine Tankless Maintenance
Certified care. Lasting performance. Complete peace of mind.
Restores Efficiency
Removes mineral deposits and scale buildup, bringing your system back to peak performance and maximizing energy savings.
Prevents Costly Repairs
Regular descaling prevents corrosion, overheating, and early failure of the heat exchanger. It helps you avoid expensive repairs or replacements.
Maintains Warranty Protection
Most tankless manufacturers require annual maintenance to keep your warranty valid. KCB Plumbing provides proper documentation to ensure your system stays fully covered.
Frequently Asked Questions
Common questions our Orange County neighbors ask about plumbing services
Yes, absolutely. We are a fully licensed plumbing contractor (LIC # 604044), and we maintain comprehensive liability insurance and bonding for your total protection and peace of mind. We encourage all customers to verify our credentials.
CB Plumbing has proudly served the Orange County community since 1998. With over 25 years of local experience, we know the unique plumbing systems in homes across Irvine, Costa Mesa, and surrounding cities. Our experience means faster diagnosis and better solutions.
Yes, we guarantee our workmanship. We stand behind every repair and installation we perform. We offer comprehensive warranties on both labor and the parts we install. We'll be happy to provide the specific warranty details for your service during the estimate process.
We believe in transparent, upfront pricing. For most jobs, we provide a detailed, flat-rate price that you approve before any work begins, so there are never any surprises. We offer free, over-the-phone estimates for many services. For more complex jobs, we may need a trip charge to conduct an in-person diagnostic, which we always communicate clearly beforehand.
We are available for service appointments Monday through Friday. However, we also provide 24/7 emergency services for critical plumbing issues. When you call our line after hours, you will always reach a member of our team who can dispatch a licensed plumber to your Orange County home quickly.
Yes, we give free over the phone estimates.
We accept multiple payment methods for your convenience, including:
• Cash
• Check
• Credit Cards
• Zelle
At this time, we do not offer financing options. However, we’re happy to work with you to find a payment solution that meets your needs. Contact us for assistance.
We recommend scheduling a professional maintenance flush every 12–18 months in the Orange County area due to hard water mineral content.
Our service includes testing water flow, pressure, inspecting the intake/exhaust, and running a specialized descaling solution through the heat exchanger to safely remove mineral deposits.
Call us immediately. Do not attempt to fix or reset the unit multiple times. Note the error code, and our certified technician will diagnose and repair the specific component required.
Yes. Our technicians are trained on all major tankless brands, including Rinnai, Noritz, Navien, and Bosch, and carry common repair parts.
