Tankless Water Heater Repair in Braintree, MA

Frequently Asked Questions

What Are The Most Common Reasons A Tankless Water Heater Stops Working?

The most frequent cause of failure is mineral scale buildup, which severely restricts water flow and prevents the heat exchanger from working efficiently. Ignition problems, such as a faulty igniter or a dirty flame sensor, often prevent the burner from lighting and heating the water. In colder climates, such as Braintree and other nearby areas, freezing can damage the unit's internal pipes if proper freeze protection measures are not implemented. Furthermore, a failure of the flow sensor or gas valve will stop the unit from recognizing the demand for hot water, causing it to remain cold.

Why Is My Tankless Water Heater Displaying An Error Code?

An error code is the unit's way of alerting the homeowner and technician to a specific internal malfunction, usually involving a safety shutdown. The code typically corresponds to an issue like ignition failure, overheating, a blocked vent, or a problem with the flow sensor. You should always consult your unit's owner's manual to identify what the specific code represents before taking any action. These codes are crucial for professional diagnosis and should be reported exactly to your repair technician when you call for service.

How Do I Troubleshoot Low Hot Water Temperature From My Tankless Unit?

First, verify that the temperature setting on your unit's thermostat or controller has not been accidentally adjusted to a lower value. If the setting is correct, check to see if too many hot water fixtures are running simultaneously, which can exceed the unit's flow rate capacity. A common problem is scale buildup inside the heat exchanger, which reduces the unit's ability to transfer heat effectively. If none of these solutions work, a faulty thermistor or a restricted gas supply may be the cause, requiring professional inspection.

How Long Does A Typical Tankless Water Heater Repair Appointment Take?

Minor repairs, such as resetting the system or replacing a simple sensor, can often be completed quickly, typically within one to two hours. More complex repairs, such as chemically flushing the unit to remove severe mineral scale or replacing a component like the flow sensor, may require two to four hours. If the heat exchanger itself is compromised or a specialized circuit board needs to be replaced, the job may require several hours or a follow-up visit. Your technician will provide a time estimate after their initial diagnostic assessment is complete.

What Should I Do If I Notice A Water Leak Near My Tankless Unit?

Your immediate priority should be safety, so first turn off the unit's power supply at the breaker box to prevent electrical hazards. Next, quickly turn off the cold water inlet valve that supplies water to the tankless unit to stop the flow of water into the system. Place towels or a container around the unit to contain the escaping water and prevent damage to surrounding areas. Do not attempt a major repair yourself; immediately call a professional tankless water heater specialist to safely diagnose and fix the leak source.

Schedule Tankless Water Heater Repair with a Local Team You Can Trust

Don’t let a malfunctioning water heater interrupt your day. With Wildcat Plumbing, you receive reliable and prompt repair services from a Braintree-based team that prioritizes your comfort and time. As your neighbors on the South Shore, we combine family values, professional expertise, and a focus on customer satisfaction in every service call. You can access 24/7 repair service and experienced, courteous plumbers when you book with us. Enjoy transparent pricing, respectful home treatment, and an approach that focuses on your needs above all else.

Don't let mineral buildup or a faulty component reduce your system's efficiency, leading to higher energy bills. Schedule professional diagnosis and repair to protect your valuable investment; Contact us at (833) 620-3192 or fill out our online form.