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Need a Plumber in Knoxville? We’re Ready to Help!

When your tankless water heater stops working, Tennessee Standard Plumbing is here to get you back on track quickly. Serving Knoxville, our licensed plumbers use advanced
diagnostics, high-quality parts, and years of experience to fix issues with both gas and electric tankless systems. Whether it’s error codes, scale buildup, or performance drops,we
handle repairs that restore hot water and improve energy efficiency.

Don’t let water heater issues disrupt your day. Request a quote now and get your hot water back on track.

4 Steps. No Surprises.™
01

Schedule Your Appointment

02

Professional Evaluation

03

Custom Pricing Options

04

Expert Service Delivery

Why Professional Tankless
Water Heater Repair is Essential

Tankless water heaters are complex systems with modulating gas valves, electronic ignition, sensors, and precision controls. Attempting repairs without the right expertise can lead to temporary fixes or safety risks.

Our team uses the proper tools and procedures to identify and resolve the root cause of your issues, ensuring a durable solution that prevents further breakdowns.

Boby and Kelton wearing light blue polo shirts stand with arms crossed in front of a Tennessee Standard-branded van.
Signs Your Knoxville Home Needs Tankless Water Heater Repair

If you’re noticing any of these issues, it’s time to call a professional:

  • Inconsistent water temperature
    (hot-cold-hot cycle)

  • No hot water
    even when the unit is on

  • Error codes
    displayed on 
the unit

  • Weak water pressure
    or low flow

  • Rumbling or clicking noises
    during operation

  • Burning smells or gas odors
    near the unit

  • Frequent shutdowns
    under normal use

Addressing these early prevents larger component failures and reduces repair costs down the line.

Bobby and Kelton wearing light blue polo shirts stand with arms crossed in front of a Tennessee Standard-branded van.
Why Choose Tennessee Standard Plumbing Apart?
  • Highest rated plumbing company in Knoxville
  • Easy online booking & same-day service
  • 0% financing available
  • The owner is a fifth-generation master plumber
  • Smart, licensed plumbers you can trust
  • Surface protection
  • Quality craftsmanship
  • No surprises, just straight answers
Our Guarantees
  • We Own It Guarantee

    If something goes wrong with our
workmanship, we make it right—no
excuses, no runaround, even if it means covering the cost ourselves.

  • Upfront Pricing Guarantee

    You’ll always receive multiple options and a clear price before any work begins. Once you approve, that price won’t change.

  • On-Time Guarantee

    We respect your schedule. If we miss our arrival window, we waive the service fee.

Benefits of Routine Tankless Water Heater Maintenance

Annual maintenance prevents unexpected breakdowns and ensures efficient operation. Regular maintenance helps:

  • Catch Issues Early: Detecting weak igniters, fouled sensors, or clogged vents before they cause major problems.
  • Ensure Steady Temperature Delivery: Clean water pathways and calibrated controls prevent temperature fluctuations.
  • Reduce Operating Costs: A clean heat exchanger transfers heat more effectively, using less fuel.
  • Minimize Error Codes: Properly functioning flow and combustion systems reduce nuisance shutdowns.
  • Extend Equipment Life: Regular maintenance reduces stress on burners, exchangers, and electronics.
  • Improve Water Quality: Descaling boosts water flow and shower comfort.

If you live in a hard-water area, annual descaling is highly recommended to maintain performance.

Bobby and Kelton wearing light blue polo shirts stand with arms crossed in front of a Tennessee Standard-branded van.
Real Reviews. Real Results. See Why Tennessee Homeowners & Businesses Trust Us
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The plumber who came out to our home, William Gough, was personable, professional, and knowledgeable. He talked us through the repair every step of the way. We will definitely call Tennessee Standard Plumbing for any further needs.

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- Lisa A.

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We contacted Tennessee Standard to replace the drain pipes in our home. When they came out to perform the replacement they also
checked our main sewer line, which was also 
in need of replacing. Patrick was able to
immediately work up an estimate for the
mainline repair and was able to fix…

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- Sharai K.

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We had multiple plumbing issues and Patrick Bordine was highly recommended. Not only did Patrick fix our issues, he shared his knowledge and provided multiple options. Since moving to TN and trying multiple plumbers, we have definitely found our “go to” plumber! Tennessee Standard and Patrick Bordine proved to be reliable and knowledgeable.

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- Penny A.

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Had an overall great and professional experience from first call to get scheduled all the way to the end in getting our kitchen draining issue resolved. Will definitely use them again and would refer them to anyone.

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- Jason S.

Got Plumbing Problems? - We Diagnose Fast and
Fix it Right the First Time.
Common Questions About Tankless Water Heater Repair in Knoxville TN

With Knoxville’s hard water, descaling is recommended at least once per year.

No, even gas-powered tankless units require electricity for ignition, sensors, and controls. If you experience frequent outages, consider adding a battery backup to keep your hot water available.

Yes, in many cases. Clearing mineral buildup, replacing faulty sensors, and restoring flow can significantly improve water pressure.

Yes, gas-powered units require proper venting to safely exhaust combustion gases. We verify venting safety and code compliance during repairs.

Absolutely! Regular cleaning, descaling, and inspections can extend the lifespan of your unit, potentially lasting 15-20 years with proper care.

We service a wide range of tankless water heater brands. If you’re unsure, contact us, and we’ll confirm whether we can repair your unit.