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  • Writer's picturelawrence sheinberg

Yearly Tankless Water Heater Maintenance Can Save You Money On Repairs And Be More Energy Efficient

Larry Sheinberg

NYS Home Inspector License # 16000115224

NYS DEC Termite Inspector License# T1907420

NYS Mold Assessor License# 23-6TUUS-SHMO


Tankless hot water heaters have gained popularity due to their energy efficiency and endless supply of hot water. To ensure the longevity and optimal performance of your tankless hot water heater, regular maintenance is essential. In this blog post, we will provide a comprehensive guide on maintaining tankless hot water heaters, helping you maximize their efficiency and reliability.

1. Follow the Manufacturer's Guidelines:

Every tankless hot water heater model has specific maintenance requirements outlined by the manufacturer. Start by familiarizing yourself with the manufacturer's guidelines and recommendations for your particular unit. This will give you a solid foundation for maintaining your tankless hot water heater effectively.

2. Regularly Flush the System:

Mineral deposits can accumulate in the heat exchanger of a tankless hot water heater, affecting its efficiency. Flushing the system periodically helps remove these deposits. Follow the manufacturer's instructions for flushing, which usually involve using a descaling solution or vinegar to dissolve mineral buildup. Flushing intervals may vary depending on the water hardness in your area.

3. Check and Clean the Air Intake and Exhaust:

Tankless hot water heaters require proper ventilation for safe and efficient operation. Inspect the air intake and exhaust vents regularly to ensure they are free from debris, dust, or any obstructions. Use a soft brush or compressed air to clean any buildup on these vents. Maintaining clear airflow will prevent overheating and ensure optimal performance.

4. Inspect and Clean the Filter:

Most tankless hot water heaters have a filter that prevents debris from entering the system. Check the filter regularly and clean it according to the manufacturer's recommendations. In some cases, the filter may need to be replaced. A clogged filter can restrict water flow and affect the heater's performance.

5. Monitor Water Pressure:

Excessive water pressure can strain the components of a tankless hot water heater. Use a pressure gauge to monitor the water pressure periodically. If the pressure exceeds the recommended limit specified by the manufacturer, consider installing a pressure regulator to protect your tankless hot water heater from damage.

6. Schedule Professional Maintenance:

While regular maintenance tasks can be performed by homeowners, it's advisable to schedule professional maintenance at least once a year. A qualified technician can inspect the unit thoroughly, perform advanced maintenance procedures, and address any potential issues that require specialized knowledge and tools.


Proper maintenance is crucial for ensuring the longevity and efficient operation of your tankless hot water heater. By following these comprehensive maintenance guidelines, including flushing the system, checking and cleaning vents, inspecting and cleaning the filter, monitoring water pressure, and scheduling professional maintenance, you can enjoy uninterrupted hot water and maximize the performance of your tankless hot water heater for years to come. Remember, regular maintenance not only saves you money on repairs but also enhances energy efficiency and extends the lifespan of your tankless hot water heater.

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