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Indianapolis
Water Heater Experts
Repair • Replacement • Tankless • Commercial
Fast. Professional. Guaranteed.
Why Is My Navien Tankless Water Heater Leaking Water?
Water leaking from a Navien tankless water heater should never be ignored. Even small leaks can cause water damage, corrosion, component failure, and unexpected system shutdowns.
Hot Water Pros provides professional Navien diagnostics and repair throughout Indianapolis and surrounding communities.
Common Causes Of Navien Water Leaks
Several issues can cause a Navien tankless water heater to leak:
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Failed O-rings
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Loose fittings
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Heat exchanger leaks
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Condensate drain problems
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Condensate trap issues
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Pressure relief valve discharge
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Excessive water pressure
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Expansion tank problems
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Freeze damage
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Internal component failure
Where Is The Water Coming From?
Identifying the leak location can help narrow down the cause.
Common leak locations include:
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Bottom of the unit
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Condensate drain connection
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Water supply connections
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Relief valve piping
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Internal heat exchanger
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Recirculation components
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Isolation valves
Not all leaks indicate a major repair. Some are relatively simple to correct when caught early.
Can I Continue Using My Navien If It's Leaking?
In many cases, continued operation is not recommended.
Water leaks may:
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Damage electronics
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Cause corrosion
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Trigger error codes
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Create safety concerns
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Lead to more expensive repairs
If a leak is present, the system should be inspected as soon as possible.
Signs You Need Professional Navien Repair
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Visible water around the unit
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Dripping from the bottom of the heater
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Rust or corrosion
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Water stains on nearby surfaces
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Repeated pressure relief valve discharge
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Error codes after leaking begins
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Sudden loss of hot water
Repeated Shutdowns Usually Mean The Underlying Problem Has Not Been Fixed
Many homeowners temporarily restore hot water by resetting their Navien, only to experience the same shutdown again days later. Repeated shutdowns often indicate ignition, venting, pressure, or maintenance-related problems that require proper diagnosis.
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Hot Water Pros can identify the root cause and help prevent future interruptions.
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Call Today: 317-922-9043
Why Indianapolis Homeowners Choose Hot Water Pros
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Licensed Indiana plumbing contractor
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Experienced with Navien tankless systems
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Same-day service available
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Water pressure diagnostics
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Tankless flushing and maintenance
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Upfront pricing
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Serving Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, and Zionsville
Frequently Asked Questions
Why is my Navien leaking water?
Leaks can be caused by fittings, condensate issues, pressure problems, heat exchanger failures, or worn components.
Is a leaking Navien dangerous?
While not always dangerous, leaks can damage electronics and surrounding property if ignored.
Can high water pressure cause a Navien leak?
Yes. Excessive pressure can contribute to relief valve discharge and component stress.
Does a leaking heat exchanger require replacement?
In some cases, yes. A professional diagnosis is necessary to determine the best repair option.
Locally Owned & Operated
Hot Water Pros proudly provides Navien repair throughout Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, Cicero, and Zionsville. Our Navien trained technicians can quickly diagnose tankless water heaters and restore reliable hot water to your home.
TANKLESS WATER HEATER SERVICES
WE INSTALL. WE SERVICE. WE GUARANTEE.
​​From installation to maintenance and repairs, we handle all your tankless water heater needs with honest pricing, expert workmanship, and the best brands in the industry.
TANKLESS
INSTALLATION
Professional installation of
tankless water heaters for maximum performance and efficiency.
TANKLESS
REPLACEMENT
Professional installation of
tankless water heaters for maximum performance and efficiency.
REPAIRS
&
MAINTENANCE
Fast diagnostics and expert repairs to keep your tankless water heater running
like new.
FLUSHING
&
CLEANING
Extend the life of your unit
and muntain boax encend with our professiona cleaning service
The plumbing services provided by Hot Water are best in class. They are extremely professional experts who show up same / next day and provide top quality services. I have used them for new plumbing installations as well as emergency situations and they have been incredibly responsive and have provided best in class work.
Jen W.
Hot Water Pros did exceptional work for me; they will be my go-to for all future plumbing needs. Cameron and his crew are incredibly thoughtful, responsive, and professional. Their workmanship is first-rate, and their pricing is very competitive. When my 10-year-old water heater started to leak, they took the time to understand my needs and didn’t try to sell me on installing more than what my family and I need or will use. That kind of service is special.
Andrew S.
Cameron is one of the best contractors I have ever worked with. He’s extremely responsive, trustworthy and communicative. I use him at my personal home and recommend him to all of my clients. I cannot say enough good things about Hot Water Pros!!
Zeida S.