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Tankless Water Heater: 6 Essential Maintenance Tasks to Remember

Tankless Water Heater Maintenance

Tankless hot water heaters have gained popularity due to their efficiency and longevity. Unlike normal hot water heaters, these innovative devices provide hot water on demand, eliminating the need for a storage tank.

However, to ensure their optimal performance, periodic maintenance is essential. From checking the water supply to inspecting the sump pump, every aspect of a tankless heater requires your attention.

In this article, we’ll reveal six crucial maintenance tasks that you can’t afford to ignore if you want your tankless water heater to last.

If you’re keen to extend the life of your tankless hot water heater and enjoy uninterrupted service, read on to discover how you can keep your system running like new.

What are Tankless Water Heaters?

What are Tankless Water Heaters

Tankless water heaters, also known as instantaneous, continuous flow, inline, flash, on-demand, or instant-on water heaters, function by instantly heating cold water as it flows through the heating elements in the device.

Unlike traditional water heaters, they don’t store pre-heated water. Instead, they heat water directly when a hot water faucet is turned on, providing immediate access to hot water. By regulating water temperature on demand, these heaters offer an efficient and convenient solution to meet your hot water needs.

Most tankless water heaters are appreciated for their compact size, energy efficiency, and superior longevity, making them an increasingly popular choice for modern homes.

How to Maintain a Tankless Water Heater? Don’t Skip These Important Maintenance Tasks

Maintain a Tankless Water Heater

Now let’s get to the core of this post – how do you maintain a tankless water heater?

Here are six essential maintenance tasks that should be included in your regular service plan.

1. Clean or Replace the Water Line Filter

The water line filter in tankless units plays a pivotal role in preventing mineral buildup. As water flows through the tankless system, minerals naturally present in the water can accumulate over time, leading to mineral deposits.

These deposits can hinder the efficiency of the unit and decrease its lifespan if not addressed. The water filter traps these minerals, protecting the internal mechanisms of your tankless water heater.

Regular cleaning or replacement of this filter is essential to maintain the system’s performance and longevity.

Here’s a simple guide on how you can clean the filter:

  • Turn off the water supply.
  • Unscrew the filter from the inlet line using a pair of pliers.
  • Dismantle the parts and rinse them thoroughly with warm water and mild detergent.
  • Reassemble all components and reinstall them.

2. Clean or Replace the Air Filter

Another filter that requires routine maintenance is the air filter. This component ensures that your heating unit can intake fresh air uncontaminated by dust and debris. Depending on the model and make of your tankless water heater, the air filter may be located in different places. So, be sure to consult your user manual.

To clean the air filter, first, remove it from its housing. Then, using a soft brush, gently remove any dust or debris collected on it. You can also rinse it under a garden hose for a more thorough cleaning. Allow it to dry completely before reinstalling it.

To keep your system functioning optimally, it’s crucial to perform maintenance on your air filter as regularly as suggested by your device’s manufacturer. Performing this maintenance regularly helps to ensure a consistent supply of fresh water, improving the overall efficiency of your system.

3. Descaling and Flushing the Unit Regularly

Over time, minerals in water can create scale build-up inside your tankless water heater, affecting its performance. Descaling and flushing your unit can help clear out this accumulation, restoring the efficiency of your system.

To descale your tankless water heater, you will need a commercial descaling solution. You may also use white vinegar as a less expensive and eco-friendly alternative. Here’s how to do it:

  • Turn off the power source and water supply to your heater.
  • Disconnect the hot water pipe and attach a hose to the heater’s outlet.
  • Pour the descaling solution or white vinegar into a bucket, and submerge a pump in the solution.
  • Connect the pump to the cold water service valve and turn on the pump, allowing the solution to circulate through the unit for about an hour.
  • After descaling, flush the unit with clean, warm soapy water to remove any leftover solution or vinegar.

Performing this descaling and flushing process regularly can greatly improve the lifespan and performance of your tankless water heater.

4. Check the Electric Control Panel and Thermostat

The electrical control panel and thermostat are crucial components of your tankless water heater. They manage the heating of water and energy usage, respectively. Regularly check the circuit breaker to ensure it’s functioning correctly, as any issues could disrupt your hot water supply.

Simultaneously, inspect the thermostat; a malfunctioning thermostat could cause inconsistent water temperatures, leading to higher energy bills.

5. Inspect the Heat Exchanger

The heat exchanger is a key component in your system because it helps to transfer heat from the water to the air. Like any other part, regular inspection is necessary to ensure they are working properly.

Check for signs of corrosion or cracks on the heat exchanger and seek professional assistance if you find any. Also, be sure to replace this component as recommended by your tankless water heater’s user manual.

6. Check for Leaks in the Unit

Since tankless water heaters are constantly exposed to water, they are at risk of developing leaks.

If you detect a leak, shut off the power and water supply immediately. Then contact an accredited plumber or repair technician to get the issue fixed as soon as possible.

A professional plumber has the skills and experience necessary to identify the source of a leak and fix it with minimum disruption. This not only saves you your time and money but also ensures a job is done right.

Get Professional Help in Mesa, AZ

In conclusion, maintaining a tankless water heater requires consistent care and attention. If you reside in Mesa or nearby areas, reach out to P&L Plumbing – your go-to professionals for a superior, energy-efficient water heating solution.

We provide comprehensive services, from installing a water softener to revamping your heating water system, ensuring optimal efficiency and longevity. Don’t compromise on your comfort.

Contact P&L Plumbing today for all your tankless water heater maintenance needs.

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