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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. Our Knoxville 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.




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.

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







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


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

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

We respect your schedule. If we miss our arrival window, we waive the service fee.
Annual maintenance prevents unexpected breakdowns and ensures efficient operation. Regular maintenance helps:
If you live in a hard-water area, annual descaling is highly recommended to maintain performance.


“ I feel comfortable calling and sending Tennessee Standard in my house to fix a problem. He respected my home just like I do. To us, Tennessee Standard is the gold standard.”
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 for homes and commercial properties. If you’re unsure, contact us, and we’ll confirm whether we can repair your unit.
Yes, we offer payment plans through GoodLeap financing for customers throughout the Greater Knoxville area, including Maryville, Oak Ridge, Farragut, and surrounding communities.
Yes. All of our work comes with a warranty covering both parts and labor, so you can have confidence in the quality and durability of our residential plumbing services.
Yes! We occasionally have specials or discounts for certain services. Check the Specials page on our website for current offers, which may vary based on the service type.
You can contact us by submitting our online form. After we receive your request, a team member will reach out quickly to arrange a convenient time for your service. We handle all types of plumbing jobs efficiently.