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Manchester · Tullahoma · Estill Springs · Shelbyville

(931) 954-7199

ServicesTankless Water Heaters

Tankless Water Heater Installation in Manchester

A tankless heater can give your home steady hot water and free up floor space. It only works well if the gas line, venting and unit size are right. We look at all three first, tell you what we found, then quote the job.

Plumber in a dark hoodie and cap connecting copper lines above a wall-mounted tankless water heater in a garage utility closet, with a red stepladder in front

What a tankless install really involves

A tankless heater fires up when hot water starts flowing and shuts down when the flow stops. There is no big tank holding 50 gallons hot around the clock. Done right, the hot water keeps coming through the second and third shower.

The catch is that a tankless unit burns a lot of gas in a short burst. Many homes have a gas line sized for an old tank heater, and that line often cannot feed a tankless unit. Venting changes too. A straight swap without checking these things leads to cold-water sandwiches, error codes and a unit that struggles.

So we start with an inspection. We measure what your home has, figure out what your family uses at peak, and tell you plainly whether tankless makes sense for you. Sometimes the honest answer is that a new tank heater is the better buy.

What the work includes

Gas supply check

We trace the gas line from the meter to the heater and check its size and length. If it is too small for the unit, we tell you before any work starts and include the upsizing in the quote.

Venting to match the unit

Tankless units use different venting than tank heaters. Condensing models usually vent through PVC, while non-condensing models need stainless. We route the new vent to code and seal the old one.

Sizing by flow and temperature rise

We size the unit by how many fixtures run at once and how cold the incoming water gets. Groundwater runs colder in winter, so a unit that keeps up in July can fall short in January if it is sized too small.

Service valves and condensate line

We fit a pair of service valves right at the unit. Later, flushing it is a quick hose hookup with no pipe work. On condensing units, we also run a condensate drain and add a neutralizer where it is needed.

Old tank removal and cleanup

We drain and disconnect your old water heater, haul it away, and clean up the work area before we leave.

Plumber shines a flashlight and points to a corroded valve and pipes under a kitchen sink as a homeowner looks on beside the open cabinet doors

When a tankless heater starts to make sense

Showers go lukewarm
By the time the last person in the family gets in, the water is barely warm. That means your tank cannot keep up. A properly sized tankless unit heats water as you use it, so there is no tank to empty.
Your tank heater is getting old
Most tank heaters last around 8 to 12 years. If yours is in that range, it is a good time to compare options before it fails.
Rust, rumbling or a damp floor
Rusty hot water, popping noises from sediment, or moisture around the base point to a tank near the end. We will check it and tell you what we see.
You need the space back
A tankless unit mounts on a wall. That can free up a closet, a corner of the garage or room in a tight utility area.
You are remodeling
If walls are already open or you are adding a bathroom, it is the easiest time to set up the gas and venting a tankless unit needs.

How the job goes

  1. 1

    Inspection and findings

    We look at your current heater, gas line, venting path, electrical outlet and water pressure. Then we walk you through what we found in plain words.

  2. 2

    Written quote

    You get a quote that spells out the unit, any gas or venting changes, and the permit. You decide with all of it in front of you.

  3. 3

    Install day

    We shut off water and gas, remove the old heater, mount the new unit, and run gas, water, venting and condensate lines. Most installs take most of a day, longer if the gas line needs upsizing.

  4. 4

    Testing and walkthrough

    We check for gas leaks, fire the unit, and run several fixtures at once to confirm steady temperature. Then we show you the controls and how the flush valves work.

What moves the price

Every home starts from a different place, so we quote after we have seen yours. The unit itself is only part of the cost. What your home needs to support it often matters more.

Gas line size
If your existing line can feed the unit, the cost stays lower. A longer run or a new, larger line adds labor and material.
Venting route
A short run straight out a wall is simple. Going up through a roof or around obstacles takes more time and parts.
Unit capacity and type
Larger units for homes with several bathrooms cost more. Condensing models cost more up front but run more efficiently.
Location changes
Keeping the heater where the old tank sat is usually cheapest. Moving it means new water, gas and vent runs.
Permit and sign-off
Gas appliance work generally calls for a permit and an official sign-off. We handle the paperwork, and that fee is already in the number we give you.

Tankless water heater questions

Will my gas line work with a tankless heater?
Sometimes, but often not. Many older homes have a half-inch line that was fine for a tank but too small for a tankless unit. We check the size and run length during the inspection and tell you before you commit.
Gas or electric tankless, which is better?
For a whole house, gas usually works better if you already have it. Whole-house electric units need a lot of amperage, and many electrical panels cannot handle the load without an upgrade. We will look at your panel and tell you what is realistic.
Does a tankless unit need maintenance?
Yes. Water in Middle Tennessee tends to be hard, and scale builds up inside the heat exchanger. Flushing the unit about once a year keeps it running right. The service valves we install make that a simple job.
How long will I be without hot water?
Usually most of one day. We plan the shutoff so you are not left without water longer than needed, and we restore service before we leave.
Can I pay over time?
We offer financing options. We also accept all major credit cards and cash. We can talk through payment when we go over your quote.
Gray tank water heater in a garage corner with new copper lines, white expansion tank above, tagged brass valve, drain pan, and a recessed washer valve box on the wall

Find out if tankless fits your home

We will inspect your gas line, venting and hot water use, then give you an honest answer and a clear quote. We serve Manchester, Tullahoma, Shelbyville and nearby towns, with 24/7 emergency plumbing service if your heater quits.