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Upgrade your home with a tankless water heater installed by the experts at Tennessee Standard Plumbing. Serving Knoxville and the surrounding areas, we specialize in tankless water heater installations that provide continuous hot water, improved energy efficiency, and a space-saving design ideal for modern homeowners.
With over 1,000 five-star Google reviews, Tennessee Standard Plumbing is known for exceptional service. Our expert installations ensure reliable performance, energy savings, and long-lasting results.
Contact us today for professional tankless water heater installation in Knoxville!




Professional installation ensures that your tankless system is perfectly configured to meet your home’s specific needs. Our state-licensed plumbers size the unit, handle the electrical, gas, and venting connections, and configure the system for quick hot water delivery throughout your home. This precise setup eliminates issues like temperature fluctuations or low flow when multiple taps are in use.
Expert installation means steady hot water for showers, laundry, and dishwashing simultaneously, with no waste from a traditional storage tank. It provides both immediate comfort and long-term value for your home.
We offer complete tankless water heater installation in Knoxville, including a complimentary in-home sizing visit and an upfront quote. Ask about our seasonal pricing and flexible financing options.

You don’t have to wait for your current tank to fail to consider a tankless upgrade. Here are signs that it might be time for a change:








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.
If you’re remodeling or replacing an aging tank, Tennessee Standard Plumbing will help you size and install the perfect system for your home’s requirements.


“ 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.”
Yes, tankless water heaters can replace most tank units. However, some situations may require electrical upgrades or gas line modifications to maximize performance.
Tankless units are compact, needing only 2-3 square feet of wall space, compared to traditional tanks that require 6-8 square feet of floor space.
Annual professional maintenance, primarily descaling to remove mineral buildup, is necessary to keep your tankless system running efficiently.
Installation typically takes 4-8 hours, depending on the complexity of your system and any required infrastructure modifications.
Tankless water heaters work well in many Knoxville homes, especially for households seeking consistent hot water and better energy efficiency. We evaluate your home’s setup before recommending a system.
Yes, when properly sized. A correctly selected tankless system can supply hot water to multiple fixtures simultaneously. Proper sizing is essential for performance.
Our plumbers remove the existing unit, install the new tankless system, complete required connections, and test the system to confirm proper operation before finishing the job.
You can schedule a consultation by calling (865) 352-9003 or by submitting a request through the contact form. Our team will review your home and hot water needs.
Select tankless water heater installations may qualify for promotional offers. Available specials vary and can be reviewed on our Specials page.
Financing options may be available for qualifying tankless water heater installations. Payment options can be reviewed on our Financing page or discussed with our team during scheduling.