What Maintenance is Required for a Tankless Water Heater?

Maintaining a tankless water heater involves a combination of routine homeowner tasks and professional servicing to ensure longevity and efficiency. Because these systems are susceptible to mineral buildup, especially in hard water areas like Colorado, regular care is essential.

Homeowners can perform the following DIY maintenance tasks:

  • Monthly: Clean or replace the inlet water filter to prevent debris from clogging the system.
  • Quarterly: Inspect the unit for any leaks, corrosion, or unusual noises.
  • Annually: Flush the system with a vinegar solution to remove scale buildup.

Professional maintenance is recommended annually. Certified technicians perform specialized tasks such as:

  • Descaling the unit every 1 to 2 years to prevent mineral deposits.
  • Conducting heat exchanger checks and combustion analysis.
  • Performing full system flushing and verifying venting and ignition components.
  • Adjusting for high-altitude conditions to ensure optimal performance.

Staying consistent with this schedule can improve energy savings by up to 30%, preserve your warranty, and extend the unit’s lifespan to 20 years or more.


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