A well-maintained tankless water heater ensures a continuous supply of hot water while maximizing the system’s lifespan. Proper maintenance can also prevent unexpected breakdowns and expensive repairs. Here, we provide a detailed guide to help you keep your tankless water heater in peak condition.

Understanding Tankless Water Heaters

Tankless water heaters, also known as on-demand water heaters, heat water only when needed, providing an energy-efficient solution for modern homes. Unlike traditional water heaters that store hot water, tankless models heat water as it passes through the unit, delivering an endless hot water supply.

Regular maintenance of your tankless water heater offers numerous benefits, including:

  • Improved Efficiency: Ensures the unit operates at peak performance.
  • Extended Lifespan: Prevents wear and tear, prolonging the heater’s life.
  • Cost Savings: Reduces energy bills and minimizes repair costs.
  • Consistent Water Quality: Prevents mineral buildup, ensuring clean hot water.

Descaling and Flushing

Mineral buildup, especially in areas with hard water, can significantly impact the efficiency of your tankless water heater. Descaling and flushing the unit at least once a year removes these deposits.

  • Turn off the Power: Disconnect the power supply to ensure safety.
  • Close Water Valves: Shut off both hot and cold water valves.
  • Connect Hoses: Attach hoses to the service ports for flushing.
  • Pump Descaling Solution: A pump circulates the descaling solution through the heater.
  • Rinse and Reconnect: Rinse the unit with clean water and reconnect all hoses and valves after flushing.

Cleaning the Air Filter

Dust and debris can clog the air filter, reducing the unit’s efficiency. It is crucial to clean the air filter every six months.

  • Locate the Filter: Refer to the user manual to find the air filter.
  • Remove and Clean: Take out the filter and clean it with a soft brush or compressed air.
  • Reinstall: Once clean and dry, reinstall the filter.

Inspecting and Cleaning the Water Filter

The water filter prevents debris from entering the heater. Regular inspection and cleaning are essential to maintain optimal performance.

  • Turn off the Water Supply: Ensure the water supply is off.
  • Remove the Filter: Locate and remove the water filter.
  • Clean Thoroughly: Rinse the filter under running water and remove any debris.
  • Reinstall: Replace the filter and turn the water supply back on.


Troubleshooting Common Issues

Low Water Pressure

Low water pressure can result from clogged filters or mineral buildup. Ensure filters are clean and the unit is descaled.

Temperature Fluctuations

Inconsistent water temperature may indicate a need for maintenance. Check for mineral buildup and clean the unit as necessary.

Error Codes

Modern tankless water heaters display error codes for specific issues. To decode and address these errors, refer to the user manual.

Professional Maintenance Services

While regular maintenance can be performed by homeowners, annual professional servicing is recommended. Certified technicians can conduct thorough inspections, identify potential issues, and ensure the unit operates efficiently.

Maintaining your tankless water heater is essential for its efficiency and longevity. Regular descaling, filter cleaning, and professional servicing keep your system running smoothly, providing reliable hot water and peace of mind.

Investing time in proper maintenance extends the life of your water heater and enhances its performance, ensuring you enjoy the benefits of an energy-efficient and cost-effective hot water solution.


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Disclaimer: The information provided on this blog is curated using online data and sources. We encourage readers to check for accuracy and always consult with a licensed professional before making any decisions. For the latest information and expert plumbing services, please call our office at (951) 520-8590.

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Plumbing Concepts, Inc. © 2024. All rights reserved.

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