Water Heater Repair
Tankless Water Heater Repair in Los Angeles
Error codes, no hot water, or scaling issues? We diagnose Navien, Rinnai, Noritz, Takagi, and Bosch units the same day.
- Licensed & Insured
- Family Owned Since 2015
- 24/7 Emergency Service
- 200+ Five-Star Reviews
A tankless water heater is a different animal from a tank unit — and most LA plumbers still lean tank. Tankless failure modes are scale buildup in the heat exchanger, flame sensor faults, ignition issues, gas-pressure starvation, and error-code cascades that confuse anyone who hasn't been trained on the specific model. We've been doing tankless repair for a decade across every major brand and carry OEM parts in the van for the top failure modes.
What's Involved
Error Code Diagnosis
Navien 030/760, Rinnai 11/12/14, Noritz 11/90, Takagi 111/711 — we know what each code actually means and the first three things to check, not the 40-step flowchart.
Scale Flush (Descaling)
The #1 LA tankless failure. Scale from hard water blocks the heat exchanger; unit throws flow or flame errors. Full vinegar-cycle flush with OEM descaling pump restores function in 90 minutes.
Flame Sensor & Ignition
Carbon buildup on the flame rod or a weak igniter causes no-ignition or lockout. Replace the part, verify gas pressure, confirm combustion — back in service.
Gas Pressure Verification
Tankless units are sensitive to gas pressure. We manometer the supply and confirm it meets the unit's spec under full flame — a frequent hidden cause of "random" tankless problems.
Venting Inspection
Condensing tankless units have vents that scale and drain trap issues. We inspect the full vent run, condensate neutralizer, and trap.
Part of Our Broader Water Heater Repair Service
Los Angeles has some of the hardest water in the country. Sediment builds up in tanks, anode rods corrode, and tankless heat exchangers scale over. Our techs diagnose the real…
Frequently Asked Questions
My tankless is throwing error code [X]. Can you fix it today?
Usually yes for the common codes (flame failure, flow sensor, scale). We carry OEM descaling kits, flame sensors, and flow sensors in the van.
How often should a tankless be flushed in LA?
LA's hard water demands annual flushing minimum. If you have a water softener, every 2–3 years is fine. Without one, some buildings need 6-month intervals.
Is it worth repairing vs. replacing?
Tankless units typically last 15–20 years if maintained. If yours is under 10 years old and the failure is scale or a sensor, repair. If it's 15+ years and throwing multiple fault types, replace.
Ready to Get It Fixed?
Call us now or send a message — we respond in minutes, not hours.