5 Warning Signs Your Tankless Water Heater Needs Repairs Now

water pressure

Tankless water heaters are a great investment for any homeowner. They are energy-efficient, space-saving, and last longer than traditional water heaters. However, like any other appliance, tankless water heaters can malfunction over time. So, it is essential to know the warning signs of a failing tankless water heater to avoid complete breakdowns and costly repairs. This blog post will show the five warning signs that you need to schedule tankless water heater repair now.

Lack of Hot Water

One of the most significant benefits of a tankless water heater is that it supplies hot water on demand. If your tankless water heater isn’t delivering hot water when needed, this is a warning sign that something is wrong. A lack of hot water can be caused by several factors, such as electrical problems, mineral buildup, or a damaged water heater system.

Strange Noises

Any unusual sound from your tankless water heater is a warning sign that the system needs attention. If you hear gurgling, popping, or hissing sounds, the water heater may have a mineral deposits buildup, causing system blockages. In severe cases, mineral deposits can damage the heat exchanger, leading to costly repairs.


When you notice any signs of water leaking from your tankless water heater, it is crucial to take action immediately. A leak can signal a crack or a damaged seal in the system. Ignoring the leakage can lead to water damage, and in some cases, the replacement of the entire tankless water heater may be necessary.

Intermittent Hot Water

If you are getting hot and cold water suddenly, it could be due to a failing thermostat or other electrical issues. This can be a warning sign that something is wrong with your heating element, which would cause the system to switch off and on continuously.

Drop in Water Pressure

Any sudden drop in water pressure can signal a problem with your tankless water heater. This can be a result of mineral buildup in the system or a blocked water filter. Low water pressure can lead to a reduced hot water supply, which can be frustrating.

Being aware of these five warning signs of a failing tankless water heater can prevent significant breakdowns and expensive repairs. Regular maintenance and checks by a professional can keep your system running efficiently and prolong its life span. If you notice any warning signs, it’s best to have the system checked and repaired before the problem worsens. Hiring a licensed technician to diagnose and repair your tankless water heater is the best way to ensure it runs smoothly and effectively for years. Book a service today!