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(615) 613-2055When it’s time to replace your water heater, you have a big decision to make. Do you stick with the traditional tank-style unit you’re used to, or make the switch to a tankless model? Both options have real benefits and real drawbacks, and the right choice depends on your home, your budget, and how your family uses hot water.
At SteadyFlo Drain Cleaning & Plumbing, we install and repair both types across Middle Tennessee. Here’s a breakdown to help you figure out which one is the better fit.
These are the classic tank-style units most homes have. They hold anywhere from 30 to 80 gallons of water and keep it hot at all times. When you turn on the hot water, the tank sends heated water to your fixtures and refills with cold water that gets heated for the next use.
They come in gas and electric models and are the most common type of water heater in American homes.
Tankless models don’t store water. Instead, they heat water on demand as it flows through the unit. When you turn on a hot water tap, cold water passes through a heat exchanger and gets heated almost instantly.
They also come in gas and electric versions, and they take up much less space than traditional units.
Traditional water heaters are cheaper to buy and install. You can get a new tank-style unit installed for a much lower cost than a tankless model. That’s a big reason they’re still so popular.
Tankless units cost more upfront, both for the unit itself and for the installation. If you’re switching from a tank-style to tankless, there may be additional work needed for gas lines, venting, or electrical.
Winner: Traditional
Tankless water heaters are more energy efficient overall. Traditional units use energy all day, every day, keeping the water in the tank hot even when you’re not using it. That’s called standby heat loss, and it adds up on your energy bill.
Tankless heaters only use energy when you’re actually using hot water, so they’re more efficient for most families.
Winner: Tankless
Traditional water heaters can run out of hot water. If you have a large family or several people showering back to back, you’ve probably experienced that cold shock when the hot water runs out.
Tankless units provide endless hot water. As long as you don’t overwhelm the flow rate, the hot water keeps coming. That’s a huge perk for busy households.
The catch is that tankless heaters have a maximum flow rate. If you’re running two showers, a dishwasher, and a load of laundry all at once, even a good tankless unit can struggle. Sizing matters a lot.
Winner: Tankless, if properly sized
Traditional water heaters typically last 8 to 12 years. Tankless units can last 20 years or more with proper maintenance. That longer lifespan helps offset the higher upfront cost.
Winner: Tankless
Traditional water heaters are big. That tank has to sit somewhere, usually in a utility room, garage, basement, or closet.
Tankless units are compact. They mount on the wall and take up very little space. If you’re tight on room or want to free up storage, that’s a real advantage.
Winner: Tankless
Traditional water heaters are easier to install. If you’re replacing an existing tank-style unit with another one, the swap is usually straightforward. Our team can typically handle it in half a day.
Tankless installations can be more involved. Gas models may need larger gas lines or new venting. Electric models may require electrical upgrades. That said, once installed, they don’t require much space or attention.
Winner: Traditional
Both types need regular maintenance, but the tasks are different.
Traditional units should be flushed once a year to clear out sediment. This is especially important in Middle Tennessee since our hard water leaves mineral deposits behind. Skipping this step shortens the life of the unit.
Tankless units need to be descaled about once a year for the same reason. Mineral buildup can reduce their efficiency and cause problems.
Both types can benefit from professional water heater maintenance to catch issues early.
Winner: Tie
One thing tankless units don’t help with is how long it takes hot water to reach your faucet. That’s a function of your pipes, not the water heater itself. If you’re used to waiting for the shower to warm up, that doesn’t change much with a tankless unit.
Recirculating pumps can help with this, but they add cost.
Winner: Tie
If you live alone or with one other person, either type will work fine. A smaller traditional tank is often the most cost-effective choice. If you value energy efficiency and don’t mind the higher upfront cost, a tankless is a great long-term investment.
Large families often benefit most from tankless units because of the endless hot water. That said, you need to size the unit correctly so it can keep up with multiple simultaneous uses. Sometimes it makes sense to install two smaller tankless units instead of one big one.
If you go traditional, look at higher-capacity tanks (50 gallons or more) to keep everyone happy.
Tankless units are perfect for smaller spaces where a bulky tank would take up valuable room. Wall-mounted models tuck neatly out of the way.
Traditional units are often the go-to for rentals because of the lower upfront cost and simpler maintenance. Landlords can replace them without major plumbing work.
Tankless water heaters can save you money on energy bills over time. How much you save depends on your usage, your energy rates, and the efficiency of your old unit. Most tankless systems pay for themselves in energy savings within 10 to 15 years.
That said, if you’re moving in a few years or replacing a unit that’s already broken, the payback timeline might not work out for you. Think about how long you plan to be in your home.
Whether you’re leaning tankless, sticking with traditional, or just not sure yet, our licensed plumbers can help you make the right call. We install and service both types across Middle Tennessee, and we’ll give you honest advice based on your home and your needs. If you have a water heater emergency, we’re available 24/7 to help.
How much does a tankless water heater cost to install?
It varies depending on the unit and any needed upgrades to your gas, electric, or venting systems. On average, expect a tankless installation to cost significantly more than a traditional one, but the long-term savings often make up for it.
Can a tankless water heater really provide endless hot water?
Yes, but only if it’s sized right for your home. If you overload it by running too many hot water uses at once, you may notice the temperature dropping. That’s why proper sizing matters.
How long does a tankless water heater last?
Most tankless units last 20 years or more with proper maintenance. That’s roughly twice the lifespan of a traditional water heater.
Do tankless water heaters need special maintenance?
Yes. They should be descaled once a year to prevent mineral buildup. In hard water areas like Middle Tennessee, this is especially important.
SteadyFlo Drain Cleaning & Plumbing proudly serves the greater Murfreesboro and Nashville areas. Our coverage zone includes Smyrna, Franklin, Brentwood, La Vergne, Woodbury, Bradyville, Antioch, Lynchburg, Manchester, Morrison, Sparta, McMinnville, Cookeville, Smithville, Mt. Juliet, Nolensville, Rockvale, Gordonsville, Shelbyville, Spring Hill, Tullahoma, Christina, Wartrace, Winchester, and Rutherford County.
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