GREENWOOD
NAVIEN WATER HEATER
CERTIFIED EXPERTS
Navien repair on Indy’s south side. Our licensed, Navien-trained and certified plumbers come to Greenwood for 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, and you approve an upfront price before we start.
Greenwood and Johnson County homeowners call Hot Water Pros for Navien repair, maintenance and replacement. We diagnose error codes and ignition failures on NPE-A2 and NPE-S2 units, handle annual descaling, and quote replacements up front when a new unit makes more sense.
✓ Specialists In Navien Tankless Water Heater Systems
✓ Navien Trained & Certified Technicians
✓ Upfront Pricing Before Work Begins
✓ Same-Day Service Throughout Greenwood
✓ 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.
Greenwood water and your Navien
Hard water is common across central Indiana. Citizens Energy Group’s 2025 water quality report puts typical regional hardness at about 200 to 425 ppm, or 12 to 25 grains per gallon. Your utility’s annual water quality report shows the number for your Greenwood home.
In a Navien, those minerals turn into scale on the heat exchanger, which can bring on error codes and shutdowns. Our Tankless Carefree Plan includes a yearly descale for $99 a year, and ScaleShot is our citric-acid descaler if you prefer to do it yourself.
Navien problems we fix in Greenwood
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 Greenwood.
Greenwood Navien Tankless Repair FAQs
Why is my Navien tankless water heater not producing hot water?
It’s usually an ignition failure, a flow sensor issue, a gas supply problem, scale buildup or an active error code. Our Navien no-hot-water guide covers each cause, and we offer same-day Navien service in Greenwood.
How much does Navien tankless repair cost in Greenwood?
It depends on the cause. After diagnosing, we give you an upfront price before any work begins. Warranty coverage is available on qualifying repairs, and Tankless Carefree Plan members get 10% off qualifying tankless repairs, up to $100 per visit.
How often should a Navien tankless water heater be flushed?
Once a year is the norm for Navien units in Greenwood’s hard water. The yearly descale is part of our Tankless Carefree Plan, $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.
Do You Repair Navien Water Heaters In Greenwood?
Yes. We come from our Fishers shop to repair Navien tankless water heaters throughout Greenwood and nearby Johnson County. Our Navien-trained technicians fix ignition failures, leaks, recirculation issues, maintenance problems and error codes. Call or text 317-922-9043 or book online.
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 All Navien Error Codes Require Service?
Not every error code requires major repairs, but all recurring codes should be investigated. Some codes are caused by simple maintenance issues while others may indicate safety concerns or component failure. Prompt service helps prevent more expensive repairs later.
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.
SERVICE AREAS