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Simply Plumbing

5-star rated on Google · TN License #4109

Tankless Water Heater Installation in Murfreesboro, TN

Rinnai tankless water heaters installed by a licensed Tennessee plumber who actually enjoys this work. You get small-shop pricing, a careful install, and a straight explanation of how your new system works.

  • Rinnai installs, all brands serviced
  • Small-shop pricing
  • 1-year install warranty

Get Your Plumbing Fixed

No service fee to come out. Someone from our team will get back to you.

Rather talk? Call (931) 993-2525

Tankless Water Heater Installation in Murfreesboro

Of everything Simply Plumbing does, tankless water heaters are the job we enjoy most. A tankless unit heats water only when you turn on a tap, instead of keeping 40 or 50 gallons hot around the clock. Sized correctly, it gives you a steady supply of hot water, takes a big tank off your floor, and hangs neatly on a wall in the garage, basement, or utility room.

We mainly install Rinnai tankless water heaters. We know their products and systems inside and out, which means fewer surprises on install day and a unit that’s set up the way the manufacturer intended. We also work on every other brand, so if you already have a tankless unit from someone else and it’s acting up, you can still call.

Is a Tankless Water Heater Right for Your Home?

Tankless isn’t the right answer for every house, and we’ll tell you if it isn’t for yours. It usually makes the most sense when one or more of these sounds familiar:

  • Your family runs out of hot water before everyone is done showering
  • Your tank water heater is getting old, leaking, or rumbling
  • You want the floor space a big tank takes up
  • You plan to stay in the home for a while
  • You already have natural gas or propane at the house, or are open to running a line

Why Our Tankless Pricing Comes In Lower

Simply Plumbing is a small shop. There’s no sales team to pay, no layers of management, and none of the overhead the big companies have to build into every price they quote. That’s why our tankless pricing usually comes in well under what larger outfits charge, without cutting corners on the install.

You won’t get an extended warranty stacked on top just to justify a bigger number. Every tankless install comes with a straightforward 1-year warranty on the work, and we stand behind it. We take a lot of pride in how our installs look and run, and it shows when you open the utility room door.

If you’d rather stick with a conventional tank, that’s fine too. We install and replace those as well, and you can read about it on our water heater installation page.

How a Tankless Install Works With Simply Plumbing

We walk every customer through the process before anything gets ordered, so you know exactly what you’re getting and why.

  1. 1

    Call or text

    Reach us at (931) 993-2525 and we’ll get you on the schedule.

  2. 2

    A look at your setup, no service fee

    We check your current water heater, gas supply, venting route, water lines, and where the new unit can mount. You’re never charged just for us to come out.

  3. 3

    A price and a plain explanation

    You get a price, or a few options, and an honest explanation of what each one includes and why.

  4. 4

    Your OK first

    Nothing starts until you say so.

  5. 5

    The install

    The old heater comes out, the tankless unit goes up, and gas, venting, and water connections are made properly, with service valves so the unit can be flushed later.

  6. 6

    A walkthrough

    Before leaving, our plumber shows you how the unit works and what it needs to keep running well.

Gas Lines, Water Quality, and Keeping Your Tankless Running

A tankless burner can use more gas at full fire than a tank heater does, so an older gas line isn’t always big enough. We check the line size and length during the visit and tell you up front if it needs an upgrade. Because we do gas line work ourselves, there’s no second company to coordinate.

Tankless units also run best with regular flushing, especially if you’re dealing with hard water or mineral buildup. Many homeowners pair a tankless install with a water softener or whole-house filter to protect the heat exchanger and their fixtures. We’ll tell you honestly whether that’s worth it for your home.

Tankless water heater installed beside a SpringWell whole-house water filtration tank in a utility room

A Plumber Who Takes Care of Your Home

Simply Plumbing is locally owned and backed by more than a decade of plumbing experience. When we show up, you get a plumber, not a salesman. We park on the street so the truck never leaks on your driveway, we don’t track dirt through your house, and we treat your home the way we’d want our own treated.

If you live in Murfreesboro or anywhere nearby in Middle Tennessee and you’re ready to talk tankless, call or text (931) 993-2525, or request a quote online. We’ll come out, look at your setup, and give you a straight answer.

Water heater out? Toilet clogged? Drain backed up?

Talk to the plumber directly. No service fee to come out.

Call (931) 993-2525
Rinnai tankless water heater and SpringWell whole-house filtration system installed by Simply Plumbing

Why Choose Us

01

You Don’t Pay to Say Hello

No trip charge, no service fee. If it turns out your problem isn’t plumbing at all, you haven’t lost a dime finding that out.

02

The Plumber Who Figures It Out

Had other plumbers out and still no answer? Troubleshooting is what we do best. We find the real problem, explain it and give you options.

03

Big-Company Quality, Small-Shop Price

Low overhead means fair pricing on water heaters, tankless installs and everything else — without cutting corners on the work.

Call (931) 993-2525

What Customers Say

5.0 stars from 43 Google reviews. Every one is from a real customer.

“Matt was great! He was able to help me on very late notice and his attention to detail was very appreciated. He was very transparent about the pricing throughout the process as he discovered many issues with the plumbing at my house that the previous owner did himself. Matt was also very knowledgeable about current code and did an excellent job educating me about the industry. I would recommend Matt and Simply Plumbing to anyone.”
Jordan HazzardGoogle · Oct 2026
“Matt did an AMAZING job! Very honest. Great communication. Highly recommend!”
Mindy MooreGoogle · Oct 2026
“Matt really saved us. On Thursday morning, Atmos came out to repair a gas leak in the line that they discovered. After fixing the leak (and taking out our Internet), they yellow tagged us saying there was a leak in our house and they couldn’t turn our gas back on until a plumber discovered where our leak was. This was a Thursday afternoon. Matt agreed to come out first thing Friday morning. Within an hour he found the issue and had us fixed, and Atmos turned our gas back on Friday afternoon. He really saved us from a weekend of cold showers. He was very professional, polite, and friendly and highly recommend him and his company.”
Jeff AhernGoogle · Sep 2026
“Friendly, fast and the problem is fixed!! Will most definitely call Matt again.”
Collins SmithGoogle · Sep 2026
“Matt and his team are the best! Always super helpful, informative, and most importantly, ethical. We’ve used Matt for years and will continue to in the years to come!”
Davis CaldwellGoogle · Aug 2026
“These guys are awesome. Great work at reasonable prices. We will continue to work with them.”
John EadenGoogle · Aug 2026

Tankless Water Heaters: Common Questions

How long does a tankless water heater install take?

It depends on the house. Swapping a tank for a tankless unit in the same spot is quicker than moving the location, upgrading the gas line, or running new venting. We’ll tell you what your install involves and how long to plan for when we give you the price.

Do you only install Rinnai tankless water heaters?

Rinnai is the brand we install most and know best, but we work on all brands of tankless water heaters, including units someone else installed.

Will I need a bigger gas line for a tankless water heater?

Sometimes. A tankless unit can draw more gas than a tank heater at full fire. We check your existing gas line during the visit and tell you up front whether it needs to be upgraded.

Can a tankless water heater run out of hot water?

A correctly sized unit keeps up with normal use. Problems usually come from a unit that’s too small for the number of fixtures running at once, which is why we size every install to the house.

Do you charge to come out and look at my setup?

No. Simply Plumbing never charges a service fee just to come out. You get a price before any work starts.

What warranty comes with a tankless install?

Every tankless install gets a 1-year warranty on Simply Plumbing’s work. The manufacturer’s warranty on the unit itself is separate and depends on the model.

Areas We Serve

Based in Murfreesboro and serving homes across Middle Tennessee, from Murfreesboro to Franklin and the towns in between.

Get a Tankless Quote

Your local residential service plumber.

Simply Plumbing plumber standing in front of the company van
Call (931) 993-2525

Mon–Fri 7am–6pm · Sat 8am–3pm · Closed Sunday

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