Tankless Water Heater Maintenance in Jacksonville, NC

We arrive and start with a complete visual inspection of your tankless unit—checking water and gas connections for corrosion, inspecting the vent pipe for blockage or condensation, and examining the control panel for error indicators. We listen carefully for unusual noises (squealing, rattling) and observe ignition performance during startup.

We check the unit’s commissioning report (if available) and any prior service records, comparing current condition against baseline readings from prior visits. This initial inspection often reveals wear patterns or emerging issues—a corroded connection growing worse year-over-year, a gradual flow reduction from mineral deposits, or subtle changes in ignition timing—that need attention before they become serious failures.

• Water inlet filter inspection and cleaning (clogged filters reduce flow and cause low-pressure shutdowns)
• Gas supply line tightness and corrosion check at connection points and regulator
• Vent pipe integrity test for blockage, condensation accumulation, or damage from weather
• Ignition and flame quality observation during startup and steady operation
• Control panel inspection for error codes, warning lights, or fault history
• Electrical connection tightness and safety switch verification (high-temp cutout, pressure relief)
• Comparison of current readings against prior service report to identify trends

Mineral deposits accumulate inside the heat exchanger during normal operation, especially in hard-water areas. We flush the system with proprietary descaling solution that safely removes calcium and magnesium buildup without damaging internal passages. We then run fresh water through the system to rinse away loosened deposits.

We also test and replace the inlet water filter (which traps sediment), check the condensate drain line for blockage, and verify that all connection points are tight and free of leaks. This step alone often restores 10–20% of lost efficiency.

• Heat exchanger descaling with certified descaling agent and approved procedure
• Inlet water filter inspection, cleaning, or replacement
• Vent condensation drain inspection and cleaning
• All water line connection tightness verification
• Gas line connection and regulator pressure check
• System flushed with fresh water to remove descaling agent residue

We measure your system’s actual performance—testing water flow rate (GPM) from the outlet, checking that hot water reaches setpoint temperature, and verifying that both low and high demand conditions produce consistent results. We compare actual performance against the unit’s nameplate specs and note any decline. If heating capacity has dropped noticeably, mineral buildup or a weak ignition system may be the cause.

• Water flow rate measurement at the outlet
• Temperature consistency test across multiple heating cycles
• Low and high demand performance verification
• Ignition sequence reliability test
• Vent pipe draft test for proper exhaust flow
• Thermostat accuracy check and calibration if needed

We test all electrical connections for safe voltage and continuity, verify that safety switches (high-temperature cutout, overpressure relief) are functioning, and confirm that error code displays are working. This step catches failing capacitors, weak contactors, and developing electrical problems before they cause failure.

• Electrical voltage testing at main connection and control board
• Safety switch operation verification (high-temp cutout, pressure relief)
• Thermostat signal testing and control board response
• Error code system check
• Visual inspection of solder joints and connections for corrosion

Finally, we document all findings, explain what we found, answer your questions, and discuss any upcoming maintenance or repair needs. We provide a detailed service report showing: descaling date and agent used, performance test results, any components replaced, warranty status, and recommendations for next visit.

• Comprehensive service report with all test results and findings
• Explanation of any detected wear or upcoming maintenance needs
• Warranty status confirmation
• Scheduling recommendation for next visit (typically 12 months)
• Contact information and post-service support