Tankless Water Heater Repairs

St. Louis, MO Metro Area

24/7 Emergency Services

Same-Day Services

New Customer Discounts Available

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Get Your Tankless Water Heater Back in Action Today

When your tankless water heater needs repair, Flow King Rooter Plumbing is ready to assist. We offer specialized tankless water heater repairs for homes and businesses across the St. Louis, MO metro area. Our services include:

  • Leak detection and repair
  • Heating element replacement
  • Thermostat troubleshooting
  • Descaling and maintenance
  • Water pressure issues
  • Error code diagnosis
  • Electrical component repairs


Is your tankless water heater acting up?
Contact us for quick, dependable repairs.


Efficient and Reliable Tankless Water Heater Repairs

While tankless water heaters are generally reliable, they may sometimes need repairs. Here are some common issues we address:

  • Inconsistent water temperature
  • No hot water
  • Strange noises from the unit
  • Visible leaks or water damage
  • Frequent shutoffs
  • Unusually high energy bills
  • Mineral buildup affecting performance


Our skilled plumbers are ready to tackle these problems and more, ensuring your tankless water heater runs smoothly.


Why Choose Flow King Rooter Plumbing

Flow King Rooter Plumbing offers several advantages for your tankless water heater repairs:

  • 24/7 emergency services
  • Quick and efficient service
  • Name-brand products from Halo, Rheem, and Ruud
  • Fully stocked trucks for immediate repairs
  • Master Plumber on staff
  • Over 40 years of experience
  • Fully licensed and bonded
  • Locally and family-owned since 2018
  • Same-day service available
  • One-year labor warranty on all work
  • New customer discounts available


We're dedicated to providing excellent tankless water heater repairs with a focus on customer satisfaction and lasting results.


Contact Us

Don't let tankless water heater problems disrupt your routine. Our Flow King Rooter Plumbing team is ready to provide swift, professional repairs throughout the St. Louis metro area. We offer estimates within 24 hours so contact us today to schedule your tankless water heater repair and experience the Flow King Rooter Plumbing difference.

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New Customer Savings!

First-time customers enjoy exclusive discounts on all our plumbing services

Call Today for Details!

(314) 254-2316
  • How often should I service my tankless water heater?

    Annual servicing is recommended for tankless water heaters. Regular maintenance prevents mineral buildup, ensures efficient operation, and extends your unit's lifespan. If you notice issues with water temperature or performance, call for a service check sooner.
  • What are the signs that my tankless water heater needs repair?

    Look out for inconsistent water temperature, no hot water, strange noises, visible leaks, frequent shutoffs, higher energy bills, and error codes on the display panel. If you notice any of these, contact Flow King Rooter Plumbing for an inspection and repair.
  • Can tankless water heaters be repaired, or do they always need to be replaced?

    Most tankless water heater issues can be repaired. Common problems like mineral buildup, faulty heating elements, or electrical issues are often fixable. However, if your unit is old or repair costs are high, replacement might be more cost-effective. A qualified technician can assess your situation and provide the best recommendation.

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Same-Day Service Available

Don't let plumbing problems disrupt your day. We're ready to tackle your issues right away, ensuring you get back to normal fast.

Call Flow King Rooter Right Away!

(314) 254-2316

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