Never wait for hot water again
Tankless Water Heaters
Serving Knoxville for 30+ Years
Knoxville homeowners have counted on The Plumbing Authority for over 30 years of honest answers, skilled workmanship, and customer-focused service.
Up-Front Pricing
From plumbing repairs to new installations and everything in between, we offer fair, upfront pricing you can trust with no hidden fees or surprises.
Fixed Right the First Time
Our licensed plumbers get the job done right the first time with accuracy, precision and care so you can get back to your day without the hassle.
Serving Knoxville for 30+ Years
Knoxville homeowners have counted on The Plumbing Authority for over 30 years of honest answers, skilled workmanship, and customer-focused service.
Up-Front Pricing
From plumbing repairs to new installations and everything in between, we offer fair, upfront pricing you can trust with no hidden fees or surprises.
Fixed Right the First Time
Our licensed plumbers get the job done right the first time with accuracy, precision and care so you can get back to your day without the hassle.
Tankless Water Heaters in Knoxville, TN
Tankless water heaters are a smart choice for Knoxville homes that want reliable hot water and better energy efficiency. Instead of storing a full tank and reheating it all day, tankless systems heat water only when you turn on the tap, saving space, cutting wasted energy, and delivering consistent hot water for your daily routines.
At The Plumbing Authority, we’re the Knoxville tankless water heater experts. Whether you’re interested in installing your first tankless system or need repair service for an existing unit, our experienced Knoxville water heater team has the knowledge and skills to keep your hot water flowing.
Let us help you discover the convenience and efficiency of tankless technology; call us today!
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GoodLeap Financing
No Interest if Paid in Full With Minimum Payment During 12-Month Promo
- 10-year term
- 15.49% rate
- 5.5% dealer fee
No Payment and No Interest if Paid in Full During 12-Month Intro
- 10-year term
- 15.49% rate
- 5.5% dealer fee
Advantages of Tankless Water Heaters in Knoxville
While tankless water heaters in Knoxville can cost more to install upfront, many homeowners choose them because the advantages outweigh the initial cost. Installing a tankless water heater in Knoxville, TN will:
- Take up less space than traditional tank units
- Offer on-demand hot water without running out
- Be energy-efficient, helping you save money on utility bills
- Heat water on an “as needed” basis, reducing waste
- Typically last longer than tanked water heaters
- Provide precise temperature control
- Work well in Knoxville’s varying seasonal demands
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Knoxville Tankless Water Heater Replacement & Installation
Do you need a brand new tankless water heater in Knoxville, TN or are you wondering if you should install one for the first time? Our plumbers can make all the necessary changes to your plumbing system so that it will work with your new water heater. We can also install the new tankless water heater, testing it to make sure it works the way it should.
Our team of experts will help you find the very best tankless water heater for your needs, as well. We’ll ensure that you and your family have plenty of hot water, no matter what your Knoxville home demands.
Should You Upgrade to a Tankless Water Heater in Knoxville, TN?
A Tankless Water Heater Is Perfect for Your Knoxville Home If…
- You hate running out of hot water. Whether it’s back-to-back showers or running the dishwasher and laundry at the same time, tankless systems heat water on demand so you never run out.
- You’re looking to cut energy waste (and your utility bill). Unlike traditional tanks that constantly reheat water, tankless units only fire up when you need hot water, helping reduce energy usage in your Knoxville home.
- You’re short on space. About the size of a carry-on suitcase, tankless water heaters mount neatly on the wall, freeing up floor space in closets, garages, and utility rooms.
- You plan to stay put—or boost your home’s value. Tankless models can last 20+ years with proper maintenance, and their energy efficiency makes them an attractive feature for future buyers.
- You want modern convenience. From faster access to hot water to advanced controls and temperature customization, tankless systems are built to fit a streamlined, tech-savvy lifestyle.
Ready to upgrade? Contact The Plumbing Authority today to learn if a tankless water heater is the right fit for your Knoxville home. Our experts will help you choose the best system, handle a professional installation, and make sure you get reliable, efficient hot water for years to come.
When It’s Time to Replace Your Tankless Water Heater in Knoxville
Repair isn’t always the most cost-effective solution. It may be time to consider a tankless water heater replacement in Knoxville, TN if:
- Your unit is 15+ years old and needs frequent service.
- Repairs are becoming frequent or expensive, especially on major components.
- Your hot water needs have changed (larger family, additions, more fixtures) and the existing unit can’t keep up.
- The system is inefficient by today’s standards, driving up utility costs.
- You’re experiencing recurring error codes or performance issues even after professional repairs.
When replacement makes more sense, The Plumbing Authority will help you choose the right tankless system for your Knoxville home, handle a proper installation, and ensure you’re set up for reliable, efficient hot water for years to come.
Book OnlineKnoxville Tankless Water Heater Repair
Tankless water heater repair in Knoxville, TN doesn’t have to give you a headache. When you call our professional plumbers, you’ll be getting the very best service you could possibly receive. We know tankless water heaters inside and out, and we are certain that we can help you fix yours.
We’ll find the issue and repair it fast so you won’t have to feel anxious about your hot water anymore! Our technicians are trained on all major tankless brands and can quickly diagnose problems.
Signs You Need Tankless Water Heater Repair in Knoxville, TN
Even the best tankless units need attention now and then. Call The Plumbing Authority for tankless water heater repair in Knoxville if you notice:
- Fluctuating water temperature: Hot, cold, hot again = potential sensor, burner, or flow issue.
- Reduced hot water flow: Could be mineral buildup, clogged filter, or internal restriction.
- Error codes on the display: Your system is telling you something’s wrong and shouldn’t be ignored.
- Strange noises: Clicking, rumbling, or loud firing can signal scaling or failing components.
- Discolored or strange-smelling water: May indicate internal corrosion or bacteria growth.
- Unit shuts off mid-shower: Often tied to venting issues, gas supply problems, or overheating.
If you’re seeing any of these signs, our tankless repair specialists can diagnose the issue quickly and get your hot water back on track.
Book OnlineKnoxville Tankless Water Heater Maintenance
Tankless water heaters require maintenance, just like conventional ones, though the maintenance process is different. Our plumbers will come to you and test each part of your tankless water heater in Knoxville, so you won’t have to worry about it.
If we discover any issues, we’ll repair them or arrange to do so ASAP so you won’t have to live with a tankless water heater that’s not working. Regular tankless water heater maintenance in Knoxville helps prevent scale buildup and ensures optimal performance in our local water conditions.
How to Properly Care for Your Tankless Water Heater
A little upkeep goes a long way toward keeping your tankless water heater efficient and reliable:
- Schedule annual professional maintenance: A technician should inspect, clean, and test the unit at least once a year
- Descale regularly: Hard water in the area can cause mineral buildup; flushing helps prevent reduced flow and error codes
- Keep vents and air intake clear: Make sure nothing is blocking airflow around the unit
- Clean the inlet filter: Rinse the small screen (if your model has one) to maintain proper water flow
- Watch for error codes or changes: Don’t ignore fluctuating temps, odd noises, or warnings on the display—get them checked early
For worry-free performance, let The Plumbing Authority handle your ongoing tankless maintenance so you always have dependable hot water.
Book OnlineKeep Your Knoxville Tankless Water Heater Running at Its Best
Whether you’re ready to switch to tankless, need help with a finicky unit, or want to keep your system running like new, The Plumbing Authority has you covered. Our Knoxville tankless water heater specialists handle new installations and replacements, fast, accurate repairs, and routine maintenance that protects your investment and prevents surprise cold showers.
Ready for reliable hot water on demand, every day? Call The Plumbing Authority or schedule your tankless service online, and let our experts take care of your tankless water heater from install to upkeep and everything in between.
Call (865) 245-5251
Knoxville Tankless Water Heater FAQ’s
Tankless water heaters heat your hot water as you need it. They heat it very quickly, so there’s usually not much of a wait for the water to get to you. This separates them from conventional heaters, which heat and store water.
The right water heater for you depends on your specific situation, including how much hot water you need, usage patterns, and your plumbing setup. Many Knoxville homeowners find that tankless water heaters are well worth the investment.
Common signs include insufficient hot water, leaks, inconsistent water temperatures, unusual noises, error codes on the display, or a complete lack of hot water. Our Knoxville technicians can diagnose any of these issues.
If your tankless water heater cannot heat water as fast as you need it, then you may run out. In these situations, we usually recommend installing multiple units for high-demand Knoxville homes.
With proper maintenance, tankless water heaters typically last 15-20 years in Knoxville, significantly longer than traditional tank units. Regular maintenance is key to maximizing lifespan in our local water conditions.
Sizing depends on your peak hot water demand and incoming water temperature. Our Knoxville tankless water heater installation experts will calculate the right size based on your specific usage patterns and home requirements.
Yes, tankless water heaters work excellent in Knoxville. They’re less affected by ambient temperature than tank units and provide consistent performance year-round, adapting well to our seasonal temperature variations.
Knoxville’s Trusted Plumbers Just Around the Corner
As your go-to plumber in Knoxville, TN, we’re proud to take care of our neighbors. Whether you’re right in the city or just outside of it, we’re already helping folks nearby in the following areas:
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