Do Tankless Water Heaters Need Maintenance?


Tankless water heaters are becoming increasingly popular due to their energy efficiency, space-saving design, and the promise of endless hot water. But, a common question we hear is: do these modern marvels need maintenance? Spoiler alert: yes, they do! Just like any other home appliance, regular upkeep is crucial. Let’s dive into why maintenance is important and how you can keep your tankless water heater running smoothly.

Understanding Tankless Water Heaters

Before we talk maintenance, let’s quickly cover how tankless water heaters work. Unlike traditional water heaters that store gallons of hot water, tankless units heat water on demand. When you turn on the hot water tap, cold water travels through the unit and is heated by either gas or electric elements, delivering hot water only when you need it.

Benefits of Tankless Water Heaters

  • Energy Efficiency: No standby heat loss means lower energy bills.
  • Space-Saving: These compact units can be installed in small spaces.
  • Endless Hot Water: Perfect for long showers and large families.

Why Maintenance is Important

Maintaining your tankless water heater is essential for several reasons. Regular maintenance ensures your unit operates efficiently, lasts longer, and prevents unexpected breakdowns. Without it, you might face issues like scaling, decreased efficiency, or even system failure. Trust us, no one wants to be stuck with a cold shower on a chilly morning!

Common Maintenance Tasks

Descaling a Tankless Water Heater

One of the most critical maintenance tasks for a tankless water heater is descaling. Over time, mineral deposits from hard water can build up inside the unit, reducing its efficiency.

How Often? Ideally, you should descale your unit once a year. However, if you live in an area with hard water, you might need to do it more frequently.

Checking and Cleaning the Air Filter

Another simple yet important task is checking and cleaning the air filter. A clogged air filter can reduce airflow, affecting the heater’s performance.

How Often? Check the air filter every few months and clean it if you notice any buildup of dust or debris.

Inspecting for Leaks or Damage on a Tankless Water Heater

Regularly inspect your tankless water heater for any signs of leaks or damage. A quick visual check can help you catch potential problems early.

Tip: Pay special attention to the pipes and connections around the unit. If you notice any leaks, it might be time to call in a professional.

DIY Maintenance Tips for your Tankless Water Heater

While some maintenance tasks are best left to the professionals, there are a few things you can do yourself to keep your tankless water heater in tip-top shape.

Basic Maintenance Tasks for your Tankless Water Heater

  • Descale the Unit: Follow the manufacturer’s instructions for descaling. Typically, this involves circulating a vinegar solution through the system.
  • Clean the Air Filter: Remove the filter, wash it with mild soap and water, and let it dry completely before reinserting.
  • Visual Inspections: Look for any signs of wear and tear, leaks, or rust around the unit.

Safety Tips

  • Turn Off the Power to your Tankless Water Heater: Always turn off the power supply before performing any maintenance.
  • Follow Instructions: Stick to the manufacturer’s guidelines to avoid any mishaps.

Professional Maintenance Services

While DIY maintenance is helpful, there are certain tasks that require professional expertise. A professional can perform a thorough inspection and tune-up to ensure your system is operating efficiently.

What Does Professional Maintenance Include?

  • Comprehensive system check.
  • Thorough descaling.
  • Inspection of all components.
  • Performance testing.

How Often?

We recommend scheduling professional maintenance at least once a year. This ensures any hidden issues are caught early, saving you from costly repairs down the road.

Choosing the Right Service Provider

When it comes to maintaining your tankless water heater, choosing the right service provider is crucial. Here are a few tips to help you make the right choice:

  • Experience: Look for a provider with experience in tankless water heaters.
  • Reputation: Check reviews and ask for recommendations.
  • Services Offered: Ensure they offer comprehensive maintenance services.


Regular maintenance is the key to keeping your tankless water heater running efficiently and extending its lifespan. Don’t wait for a problem to arise; schedule regular check-ups to enjoy endless hot water without any hiccups.

If you’re unsure where to start or need professional help, Vaquero Plumbing is here for you! Contact us today to schedule a same day tankless water heater appointment . Don’t forget to ask about our special offers on maintenance services. Keep your tankless water heater in perfect shape with a little help from your friends at Vaquero Plumbing!

We hope this guide helps you understand the importance of maintaining your tankless water heater. Remember, a little upkeep goes a long way in ensuring you never run out of hot water. Happy maintaining!