7 Signs Your Tankless Water Heater Needs Professional Attention

Tankless water heaters in Arlington, WA, can also be referred to as on-demand or instantaneous water heaters and are widely used in homes and businesses for their ability to provide hot water without any need for a storage tank.

In this blog, we will discuss seven signs that indicate your tankless water heater may need professional contractor service, including reduced water flow or pressure, irregular water temperature, leaks or water damage, error codes or flashing lights, age of the unit, increased energy bills, and that’s where the need for emergency tankless water heater contractor service emerges.

7 signs that your tankless water heater needs professional attention

Recognizing these signs can assist you in identifying potential problems with your tankless water heater and taking prompt action to ensure its proper operation and durability.

As a homeowner, it’s crucial to be aware of the signs that may indicate the need for professional attention. In this blog, we will outline seven signs that suggest your tankless water heater may require service from a qualified technician.

1. Reduced water flow or pressure

One of the most common signs that your tankless water heater may need professional attention is reduced water flow or pressure. If you notice a significant decrease in the amount of hot water coming out of faucets or shower heads, or if the water pressure is consistently low, it could be a sign that your tankless water heater is not functioning properly. This can be due to mineral buildup in the unit, a malfunctioning component, or other issues that require professional diagnosis and repair.

2. Irregular water temperature:

Another sign that your tankless water heater may need professional attention is irregular water temperature. If you notice that the water temperature is inconsistent, fluctuating between hot and cold, or if the water is not getting hot enough, it could indicate a problem with the unit.

3. Leak And Water Damage

Possible causes of issues with your tankless water heater include a faulty temperature sensor, malfunctioning heating element, or other problems that require professional attention. If you notice leaks or water damage around your tankless water heater, it’s crucial to have it inspected and get it repaired by any qualified technician to prevent further damage to your home.

4. Error codes or flashing lights

Most tankless water heaters are equipped with diagnostic systems that display error codes or flashing lights to indicate when something is wrong with the unit. If you notice any error codes or flashing lights on your tankless water heater, it’s a sign that the unit is experiencing a malfunction and needs professional attention.

5. Reset or Troubleshoot

Trying to reset or troubleshoot your tankless water heater without proper knowledge can potentially cause further damage. It’s advisable to contact a professional technician to diagnose and fix the issue.

ALSO READ: Tankless Water Heaters: Space-Saving Solutions for Small Homes

6. Age of the water heater

The age of your tankless water heater can be an indicator of potential problems. As tankless water heaters typically have a lifespan of 10 to 15 years, if your unit is reaching or surpassing this timeframe, it may exhibit signs of wear and reduced efficiency. Having it inspected by a qualified technician can help determine if repair or replacement is necessary and what would be the tankless water heater cost for such repairs.

7. Increased energy bills

If you notice a sudden rise in your energy bills without any changes in your water usage habits, it could be a sign that your tankless water heater is not functioning efficiently. Reduced efficiency can result from various issues such as mineral buildup, faulty components, or other problems that require a professional’s attention. A skilled technician can easily diagnose the issue and recommend the appropriate repairs or adjustments to help restore your tankless water heater’s efficiency and save on energy bills.

Need Emergency Tankless Water Heater Service Near Your Area?

If you come across such problems, where there is a sudden lack of hot water or malfunctioning of the water heater, then it would be better if you go for emergency service. Even the best tankless water heater can malfunction, which may directly or indirectly affect your daily life. Therefore it is quite essential to address the issue to prevent any inconvenience or any potential damage caused to the tankless water heater.

Despite their reputation for efficiency, durability, and long lifespan, tankless water heaters in Marysville, like any other mechanical system, can encounter problems that may necessitate professional intervention.

Emergency tankless water heater service may be needed in various situations, such as a complete loss of hot water, water leaks that are causing water damage, gas leaks or strange odors, unusual noises coming from the unit, or error codes indicating a critical malfunction. These issues can arise unexpectedly and require immediate attention to prevent further damage or safety hazards. That is why Dapper Plumbing is here at your service. It is a local and family-owned company where we provide our clients with HVAC, electrical, and plumbing services. We are passionate about supporting charities and advocating for children with hearing disabilities. Our team believes in providing quality services to the surrounding community and aims to achieve perfection in every job we do. You can reach out to our team regarding all your queries and for any service-related apprehensions.


It’s crucial to understand that troubleshooting or repairing a tankless water heater without proper expertise can be hazardous and potentially cause more damage. Therefore, contacting a reputable and experienced professional technician is recommended, especially for emergencies.

Consider experience, licensing, reputation, services offered, pricing, warranty, and customer support when deciding. By doing your due diligence and getting quotes from reputable contractors, you can ensure that you hire the best contractor for your tankless water heater needs. Feel free to request a quote from Dapper Plumbing to get started on your project today!

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