• Serving ALL of Nashville/Middle TN
  • 615-382-8131 service@fivestarbuilding.net

Tankless Water Heater

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Tankless Water Heater Services in Nashville, TN

Consistently the #1 Rated Service Co. in Metro Nashville and Middle Tennessee

Tankless water heaters use more energy-efficient technology than traditional water heaters. Tankless water heaters make it easy to take advantage of hot water for things like cooking, bathing, or laundry, without the fear or frustration of running out. 

Give FiveStar a call to get your tankless water heater installed, repaired, or serviced today. Cal your trusted Nashville water heater experts at (615) 382-8131

Tankless Water Heater Installation

One of FiveStar’s expert plumbers can assist you in determining that your gas and water is suitable for a tankless water heater installation. We can help you determine an answer to the question, “should I get a tankless water heater?” by discussing a full range of predetermining factors. 

Some of these factors include, but are not limited to:

-Your household’s average water use

-The possibility of needing one or more units to properly meet the needs of your home’s daily water usage. 

-The type of fuel that is appropriate for your home

-Check that all codes/laws for proper installation are being followed

FiveStar plumbers install all types of Tankless Water Heaters and are able to assist you in finding the best system for your family and lifestyle. Our certified plumbers also offer annual maintenance checks to ensure your tankless water heater is working properly, keeping all your warranties up to date. Call Fivestar to learn about how to get an endless supply of hot water and a quote.

Tankless Water Heater Repair

If your tankless water heater is in need of repair, you should have a qualified plumbing technician come out to handle the situation. FiveStar’s experienced contractors will ensure that your tankless water heater is back to working safely and effectively in no time. No matter which brand or type of tankless water heater you are having trouble with, FiveStar is qualified to repair properly the first time. 

Common Repairs Include

  • Water leaks
  • Incorrect installation
  • Malfunctioning Unit
  • Rattling or rumbling sounds

Tankless Water Heater Maintenance in Nashville, TN

FiveStar plumbers recommend annual maintenance checks on your tankless water heater, beginning with the first year it is installed. Many brands, such as Navien, mandate annual maintenance as a part of keeping their warranty in effect. Some tankless water heater services include:

  • Assessing overall operation and efficiency
  • Checking wires, connections, and vents
  • Water flushing
  • Sensor cleaning
  • Ensuring proper water temperature
  • Acid flushing the heat exchanger

How does a tankless water heater work?

Commonly referred to as an on-demand water heater or a tankless unit, these hot water heaters supply your home with endless amounts of hot water. It brings the hot water to your shower and other appliances by following this simple process:

  1. Water goes into the heater
  2. The water flow sensors identify the strength of the flow of water
  3. The water heater automatically launches the burner
  4. Water then circulates through the heat exchanger
  5. The heat exchanger heats the water to the desired temperature

Once you turn off the hot water tap or the appliance stops running hot water, the tankless heating system will automatically turn off. It’s really that simple. 

Should I invest in a tankless water heater?

If you are considering switching your home’s traditional water heater to a tankless water heater, take a moment to weigh out all of the pros and cons of making this switch.

  • Cost: The upfront investment of a tankless water heater is usually a bit higher than a standard water heater. However, it is important to keep in mind the rest of these considerations that seem to make up the difference over time. 
  • Service: Most tankless water heaters require annual servicing and maintenance checks, much like a standard water heater. 
  • Life Expectancy: Typically, on-demand water heaters are intended to last anywhere from 15-20 years.
  • Endless Hot Water: The convenience and comfort of having hot water right when you need it without running out.
  • Efficiency: Tankless water heaters are approximately 40% more efficient than a 50 gallon water tank heater. This means you could save roughly $100 per year in energy usage, meaning it practically pays for itself within the first ten years. (Note: fuel types can have a significant effect on this.)   
  • Compact: Tankless water heaters will save you a significant amount of space, as they are typically mounted to a wall or are installed outdoors. 
  • Incentives: Many utility companies offer incentives and rebates for those who have tankless water heating systems. 

Common FAQ’s for Tankless Water Heaters

What are the benefits of having a tankless water heater?

Tankless water heaters are often referred to as endless water heaters or on-demand water heaters. The main reasons many people prefer them to standard water heaters are:

  • More energy efficient
  • Lower monthly costs
  • Longer lifespan
  • More compact
  • Peace of mind in having an endless supply of hot water

Do Tankless water heaters run out of hot water? 

No. Tankless water heaters provide an endless supply of hot water to your home and appliances. Standard water heaters rely on a tank filled with water that takes time to become full and heated. Once the tank runs out, you will have to wait for it to fill and reheat again. Tankless water heaters will never make you wait for hot water!

How long do tankless water heaters last?

Typically, tankless water heaters have a life expectancy of 15-20+ years. They can last even longer with routine maintenance checks. Standard water heating systems have a life expectancy of roughly 7-10 years for reference.

Contact Nashville’s trusted Tankless Water Heater experts at FiveStar today! 

FiveStar has proudly been installing and servicing heating and cooling systems in the greater Nashville area for more than 40 years! We service and repair all brands and types of water heaters in Middle Tennessee. Give our professional plumbers and HVAC technicians a call at (615) 382-8131.

Services That We Offer

  • Pipe Leaks
  • Faucet, Toilets, and More
  • Commercial
  • Drain and Sewer Clogs
  • Water Heaters
  • HVAC- Heating and Cooling
Pipe leaks are not only a nuisance that can cost you money from having a higher water bill, but since water is under pressure, there is always the danger of flooding your house and causing significant damage. We are experts at fixing all pipe leaks and also specialize in replacing ALL of your water lines if that is necessary.
  • Copper leaks
  • Galvanized leaks
  • Frozen pipes
  • We beat all other repipe estimates
  • CPVC, Uponor, and more
Sometimes your faucet needs replacing and sometimes it can be repaired.  It takes a great deal of experience to work on old faucets, because they can be finicky.  We never steer you wrong and will always let you know what your options are.  Do you have an old toilet that has seen better days?  Maybe it’s constantly running and costing you money.  Or maybe you just want to upgrade it with a beautiful brand new one with advanced flush technologies.  Whatever the case, we are standing by at the ready.
  • Faucet repair and installs
  • Toilet repair and installs
  • Garbage disposals
  • Shower valves & more
  • Moen, Delta, Kohler, more
Homes aren’t the only places in need of plumbing and AC services.  We probably service more restaurants, hotels, office buildings, strip malls, and other commercial businesses than any other mechanical company in Nashville.  The last thing you need is your employees and customers suffering when mishaps occur.  We are here for you.

  • Restaurants
  • Hotels/Strip malls
  • Commercial plumbing
  • Commercial HVAC
  • Special pricing available
When water and waste don’t go where they are supposed to go, it is an incredibly bad scene for all parties involved.  Main line backups, kitchen sink backups, laundry lines, slow shower drains.  We have very reasonable prices and get to you FAST so that you won’t have to suffer for too long.
  • Main sewer lines
  • Kitchen lines
  • Lavatory drains
  • Shower drains
  • Washing machine lines and more
We are the undisputed leader in Tennessee for tankless water heaters. Also known as “on-demand”, tankless heaters are the future of water heaters, and the future is now. There are so many advantages of conventional water heaters. But, we also repair and replace all the different variations of gas and electric conventional heaters, also.
  • Tankless water heaters
  • Lower energy costs
  • Saves space. Safer
  • Endless hot water!
  • Conventional repair and replacement, too

As bad as plumbing problems can be, temperature control obviously can also be a huge issue. From air conditioning repair to total HVAC system replacement, our overriding philosophy is balancing energy efficiency, comfort, and cost. Also, your heating unit probably uses a substantial amount of energy during the winter months. At Fivestar, if necessary we’ll help you choose the most efficient replacement heating and air systems for your needs & budget and fix any problems you have rapidly so that you don’t have to suffer through temperature extremes.

  • Repairs
  • New installations
  • Energy assessment
  • Service agreements
  • All aspects of HVAC

Why Choose Us

Consistently Rated Nashville's #1 Rated Service Co.

Extremely Quick Service

Guaranteed Satisfaction

No Hidden Charges

What Our Customers Say


Jocelyn Rodgers

Happy Customer! Wow! We worked on our plumbing problem for 2 hours and your plumber fixed it in 10 minutes. Thanks! You have a very big fan here.


Carlisle McGregor

Paul was so professional and polite - he went the extra mile and made sure that everything was working perfectly before he left. Good price, also.


Felicity Chambers

I had a tremendous experience with Fivestar. Not only was the pricing very reasonable but they also were able to work around my schedule. Highest recommendation!

Year After Year, Middle TN's #1 Rated Service Company!

Join the thousands of Tennesseans each month who choose Fivestar for their plumbing, heating, and cooling needs.

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