ServicesTankless Water Heaters
Tankless Water Heater Installation in La Vergne
Your old tank quit, or you're tired of running out of hot water. We size a tankless unit to your home, handle the gas, venting and electrical changes it needs, and leave you with hot water that keeps up.

When a Tankless Heater Makes Sense
A tankless heater warms water only when you open a tap. No 50-gallon tank sitting in the garage, no waiting for it to recover after two showers. It runs as long as you need it.
It is not the right fit for every house. Gas models tend to want a larger supply pipe than the old tank had, and they almost always need a different vent. Electric models pull a lot of power, and some older panels can't carry that load. We look at all of it before we quote, and if a new tank is the better call for your home, we tell you.
A lot of our calls start when a tank fails without warning and puts water on the garage floor. That is a bad day, but it is also a good time to decide what goes in next. We can get hot water back fast and walk you through both options.
What the Install Covers
- Sizing by flow, not guesswork
- We count your fixtures and how many run at once, then figure the gallons per minute you need. Winter groundwater comes in colder, so we size for the hardest month, not the easiest.
- Gas line and venting
- Most gas tankless units need a larger supply line than a tank. We run it, then install the right vent: PVC for condensing units, stainless for non-condensing models.
- Electrical work for electric units
- Electric tankless heaters draw a lot of current. We check your panel and run the dedicated circuits the unit calls for.
- Flush valves and a drain line
- Every unit gets shutoff valves on both sides, so a yearly flush is a hookup job, not a cut-and-solder job. A condensing model also gets its own line to carry off the acidic water it makes.
- Removal of the old tank
- We drain it, disconnect it and haul it off. You don't have to figure out what to do with it.
- Permit and inspection
- We pull the permit and meet the inspection. Our install comes with a 2-year warranty.
Signs It's Time to Look at Tankless
Your tank is leaking or rusted
Water around the base or rust on the jacket means the tank is on its way out. Plan the replacement before it lets go.
Hot water runs out mid-shower
If the second or third person in line gets cold water, your tank is too small for how you live now.
The tank is past 10 years old
Tanks often fail around that age, usually without much notice. Replacing on your schedule beats replacing after a flood.
You need the floor space back
A wall-mounted tankless unit frees up the corner the tank took in a garage, closet or utility room.
Storm damage hit the old heater
Floodwater, a power surge or a damaged vent can leave a tank unsafe to run. We look it over and tell you straight whether it can stay or should go.
How Install Day Goes
- 1
Look and measure
We check your gas meter, line size, panel, vent path and where the unit can mount. Then you get a written estimate with each item listed.
- 2
Shut off and remove
We turn off water and fuel, drain the old tank and take it out. We lay down drop cloths along the path we use.
- 3
Mount, pipe and vent
The unit goes on the wall. We run water, gas or power, vent it to the outside and add the service valves. As a backflow certified shop, we also make sure the water connections protect your supply.
- 4
Fire it up and test
We purge air, light it, check gas pressure and test hot water at several taps at once. We show you the controls and how to flush it once a year.
- 5
Clean up
We sweep up, haul off the old heater and leave the area as we found it.

What Moves the Price
We price every tankless job after we've seen your home. The heater is only one piece of the bill. Most of the difference comes from what has to change around it. Each of those items gets its own line on your estimate, so the total doesn't grow after we start.
- Gas or electric
- Gas units often need a new supply line and venting. Electric units can need panel work or new circuits.
- Unit size
- A home with several bathrooms running at once needs a higher-flow unit, or two units, than a small house does.
- Vent route
- A short straight run out an exterior wall is simple. Long runs or going through the roof take more time and material.
- Where it mounts
- Moving the heater away from the old tank spot means new water and gas runs. An unheated garage may also need freeze protection, since winter cold snaps do happen here.
- Permit and extras
- The permit, a recirculation pump or a water softener ahead of the unit all add to the total. If you'd rather spread out the cost, ask us about financing. You can pay with cash or any major credit card.
Tankless Questions We Hear
Something not covered here? (615) 544-3733
Will a gas tankless heater work when the power goes out?
No. Gas tankless units need electricity for the fan and controls, so they stop during an outage. If storms knock out your power often, a small backup generator or battery can keep it running. We can talk through that on the estimate.
Can I just swap my tank for tankless in the same spot?
Often yes, but the gas line and vent usually change. An old tank's vent and supply line are rarely the right size for a tankless unit. We check both before we quote.
How long does the install take?
A straight swap usually takes most of a day. Jobs that need a new gas line, a long vent run or panel work can take longer. We tell you up front so you can plan around being without hot water.
My old tank just flooded the garage. Can you help today?
We offer 24/7 emergency plumbing service. We can shut things down safely and get the old tank out. Then we go over whether a tankless unit or a new tank makes sense, and give you a free estimate either way.
What upkeep does a tankless heater need?
Flush it about once a year to clear mineral scale. The service valves we install make that a quick job. If scale is heavy, our whole home water filtration work can help protect the unit.
Is the install covered?
Yes. Our tankless installation work comes with a 2-year warranty. The unit itself also carries the manufacturer's own coverage.
Let's Size the Right Heater for Your Home
Tell us what's in the garage now and how many showers run back to back on a busy morning. We'll stop by, take the measurements and give you a written price before any pipe gets cut.