Tankless Water Heater Repair in Upland, CA

Man in a blue cap tightening plumbing under a water heater.

Hot water should be simple. When your tankless system suddenly quits—cold showers, blinking error codes, strange noises—it’s anything but. That’s where Cruz Plumbing & Rooter comes in. We bring fast, reliable tankless water heater repair to Upland and the surrounding Inland Empire so you can get back to comfort without the stress.

Common Tankless Heater Problems We Fix

  • Fluctuating water temperature

  • Low water pressure

  • Strange noises or vibrations

  • Error codes on your unit’s display

  • Ignition or heating element failure

If your system is acting up, don’t wait until it fully shuts down. Early repair saves money and prevents bigger damage.

Prevent Future Breakdowns with Maintenance

Tankless systems last longer with regular upkeep. Ask about our preventive maintenance services to:

✔ Flush out mineral buildup

✔ Keep parts running efficiently

✔ Extend the life of your water heater

✔ Avoid costly emergency repairs

Tankless Water Heater Repair FAQs

Why won’t my tankless water heater produce hot water? There are several potential reasons, including mineral buildup, ignition failure, a tripped circuit breaker, or a gas supply issue. It could also be due to a malfunctioning flow sensor or a blocked vent. Our highly-skilled plumbers can diagnose the exact cause and recommend a reliable fix.

Can hard water damage my tankless water heater? Yes, hard water can lead to scale buildup inside a tankless water heater, which can reduce efficiency and cause premature wear. Installing a water softener or scheduling regular descaling/maintenance helps prevent this type of damage.

How often should a tankless water heater be serviced? Most manufacturers recommend annual maintenance to flush the system and inspect components. Regular servicing helps maintain energy efficiency, extend the lifespan of the unit, and prevent costly repairs down the line.

Don’t Wait on Cold Showers

Whether it’s a small repair or a system that’s completely shut down, our team is ready to help.

Call (833) 453-2731 to discuss your water heater needs or to schedule a service appointment.

Here is what our clients have to say…

“The quality and professionalism of Cruz Plumbing was above all other plumbing companies I have used in the past.”

— Joe M.

original-plumber-icon.jpeg

DID YOU KNOW……

The first stall in a row of public toilets is the least used, and therefore – the cleanest.

With Cruz you don't lose

Serving the Inland Empire and surrounding areas. Here are some of the services that we provide to our customers. If you do not see the service that you require listed below, we encourage you to give us a call to ensure that we provide that service! Call us today if you need:

  • Backflow Services

  • Bathtub & Shower Repair

  • Drain Cleaning

  • Garbage Disposal Repair

  • Pipe Installation

  • Leak Detection

  • Sink Installation

  • Toilet Installation

  • Water Heater Installation

  • Bathtub & Shower Installation

  • Drain Installation

  • Emergency Services

  • Gas Line Services

  • Pipe Repair

  • Sewer Services

  • Sink Repair

  • Toilet Repair

  • Water Heater Repair