CICERO
NAVIEN WATER HEATER
CERTIFIED EXPERTS
Navien tankless repair for Cicero and the Morse Reservoir area. Our licensed, Navien-trained and certified plumbers handle emergency repairs, annual descaling, error codes, ignition failures, no-hot-water problems, leaks and recirculation issues on all major Navien models, including the NPE-A2 and NPE-S2 series, with an upfront price before any work begins.
Cicero homeowners count on Hot Water Pros for Navien repair, maintenance and replacement. We diagnose error codes and ignition failures on NPE-A2 and NPE-S2 units, keep them descaled, and can advise on freeze protection for homes that sit empty in winter.
✓ Specialists In Navien Tankless Water Heater Systems
✓ Navien Trained & Certified Technicians
✓ Upfront Pricing Before Work Begins
✓ Same-Day Service Throughout Cicero
✓ Licensed Indiana Plumbing Contractor
✓ Navien Error Code Specialists
✓ Annual Tankless Maintenance & Descaling
✓ Warranty Available On Qualifying Repairs
REAL NAVIEN REPAIR
NAVIEN REPAIR IN PROGRESS
A real photo from a Navien tankless repair by Hot Water Pros.
Navien tankless water heater opened up for repair
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.
Professional installation of tankless water heaters for maximum performance and efficiency.
Professional replacement of tankless water heaters for maximum performance and efficiency.
Fast diagnostics and expert repairs to keep your tankless water heater running like new.
Extend the life of your unit and maintain peak performance with professional tankless flushing and cleaning.
Cicero water and your Navien
Central Indiana’s water is hard. Citizens Energy Group’s 2025 water quality report estimates typical regional hardness at about 200 to 425 ppm (12 to 25 grains per gallon). Your water utility’s annual report, or a test if you have a well, shows where your Cicero home falls.
That hardness becomes scale on a Navien heat exchanger and can lead to error codes and shutdowns. A yearly descale with our Tankless Carefree Plan ($99 a year) or ScaleShot, our citric-acid descaler, prevents most of it.
Navien problems we fix in Cicero
Error 109 or 110? Both point to air pressure or venting. Start with our error 109 and error 110 guides.
No hot water? See Navien not producing hot water.
Leaking? See Navien tankless leaking water.
Ready to replace? See tankless water heaters in Cicero.
Cicero Navien Tankless Repair FAQs
Why is my Navien tankless water heater not producing hot water?
Common causes are an ignition failure, a flow sensor issue, a gas supply problem, scale buildup or an active error code. If the house sat empty in cold weather, freezing is possible too. See our Navien no-hot-water guide; same-day Navien service is available in Cicero.
How much does Navien tankless repair cost in Cicero?
We diagnose first, then quote an upfront price before any work begins. Warranty coverage is available on qualifying repairs, and Tankless Carefree Plan members save 10% on qualifying tankless repairs, up to $100 per visit.
How often should a Navien tankless water heater be flushed?
Yearly for most Navien units in Cicero. Central Indiana’s hard water leaves scale that a descale removes, and it’s included in our Tankless Carefree Plan for $99 a year.
What Does Navien Error Code 003 Mean?
Navien Error Code 003 indicates an ignition failure. This means the unit attempted to ignite but was unable to establish a flame. Common causes include gas supply issues, dirty flame rods, venting problems, or faulty ignition components. Our technicians can quickly diagnose and repair Navien ignition failures. See our Navien error 003 guide.
What Does Navien Error Code 012 Mean?
Navien Error Code 012 indicates flame loss during operation. The burner initially ignited but the flame was not maintained. This can be caused by gas pressure problems, venting restrictions, dirty flame sensors, condensate issues, or component failure. Professional diagnosis is recommended to prevent recurring shutdowns. See our Navien error 012 guide.
What Does Navien Error Code 038 Mean?
Navien Error Code 038 indicates low water pressure within the system. This may be caused by a water supply issue, clogged inlet filter, air in the system, or a malfunctioning pressure sensor. Restoring proper water flow often resolves the problem, but persistent codes should be professionally inspected.
What Does Navien Error Code 110 Mean?
Navien Error Code 110 typically indicates an air pressure or venting issue. Blocked intake or exhaust vents, damaged vent piping, frozen vent terminations, or a faulty air pressure sensor can trigger this code. Proper venting is critical for safe operation and should be inspected by a qualified technician. See our Navien error 110 guide.
What Does Navien Error Code 351 Mean?
Navien Error Code 351 indicates abnormal water pressure in the system. Common causes include high or fluctuating water pressure, a failing pressure-reducing valve or expansion tank, or a faulty sensor. A technician can test your water pressure and find the root cause. See our Navien error 351 guide.
Can I Reset My Navien Water Heater After an Error Code?
Many Navien units can be temporarily reset by pressing the reset button. However, if the error code returns, the underlying problem still exists and should be diagnosed. Repeatedly resetting the unit without addressing the cause can lead to additional damage.
Why Does My Navien Water Heater Keep Showing Error Codes?
Recurring error codes often indicate an unresolved issue such as scale buildup, gas supply problems, venting restrictions, faulty sensors, or failing components. Professional diagnosis can identify the root cause and prevent future breakdowns.
Do You Repair Navien Water Heaters In Cicero?
Yes. Hot Water Pros repairs Navien tankless water heaters throughout Cicero and around Morse Reservoir. Our Navien-trained technicians handle ignition failures, leaks, recirculation issues, maintenance and error codes. Call or text 317-922-9043 or book online.
CUSTOMER REVIEWS
What Our Customers Say
“They are extremely professional experts who show up same / next day and provide top quality services.”
Jen W.
“Hot Water Pros did exceptional work for me; they will be my go-to for all future plumbing needs.”
Andrew S.
“They came out and replaced my hot water heater today, the same day that I called them to see if they could help me!”
Laura B.
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