A white wall-mounted tankless water heater in a bright clean garage with copper pipes, a digital display and neat gas and water connections

Plumbing · Tankless Water Heaters

Tankless Water Heaters in Nashville

Tankless heaters heat water on demand, free up floor space and can last for years with proper care. We size, install and service them.

Call us today(629) 276-6322

Get Free Estimate Free Plumbing Tools

Best forOn-demand hot water
SizeMatched to flow
GasPlanned and sized
VentingChecked
ServiceFlushing and repair
RelatedWater heaters

About Tankless Water Heaters

Endless hot water and a smaller footprint. We install and service tankless.

A tankless water heater heats water only when you use it, so you do not run out the way you can with a tank. Sizing, gas supply, venting and water quality all matter, and we plan each of them before the install.

We install new tankless units, replace tanks with tankless and service existing systems, including flushing and troubleshooting.

Call (629) 276-6322

On-demand hot water
Sized to your fixtures
Gas, venting and water planned
Service and flushing

A new 50-gallon tank water heater installed in a tidy utility closet with copper and flexible connections, a drain pan and a pressure relief line

Who It Is For

A Great Fit If You…

Homes that run out of hot water

Owners who want to free up space

Households planning a bathroom or kitchen remodel

How It Works

What Goes Into Tankless Water Heaters

Four parts of the job, each explained so you know what to expect.

01

Flow rate

Size the System

We count your fixtures and typical use to choose a unit with the right capacity.

Fixtures
Flow
Rise
Fuel

Hot Water
Efficiency
Reliability
Install Speed
Longevity

02

The details

Gas and Venting

Gas line size, venting and clearances are planned so the unit runs safely and efficiently.

Gas line
Vent
Clearance
Condensate

Hot Water
Efficiency
Reliability
Install Speed
Longevity

A modern shower in a bright bathroom with steam rising from a chrome rain shower head and glass walls fogged with warm steam

03

Set up

Install and Commission

We mount, connect and test the heater and set it up with you.

Mount
Connect
Test
Settings

Hot Water
Efficiency
Reliability
Install Speed
Longevity

A small hot water recirculation pump mounted on a copper pipe beside a water heater, neat installation with insulated lines

04

Keep it healthy

Service and Flushing

Periodic flushing and checks keep a tankless heater performing and extend its life.

Flush
Filter
Errors
Checks

Hot Water
Efficiency
Reliability
Install Speed
Longevity

How It Scores

Where Tankless Water Heaters Shines

Each shape shows how one part of this service performs on five qualities. Tap a name to compare. Scores are our plain-English judgement, not lab ratings.

The Process

How We Work With You

01

Plan the Install

We look at the space, the connections and the equipment you want, and talk through options that fit.

02

Prepare the Space

We protect floors and finishes, shut off water or gas where needed and set up for a clean install.

03

Install and Connect

Everything is set, connected and secured with the right fittings and supports.

04

Test and Walk Through

We test for leaks and performance, show you how it works and where the shutoffs are.

Free Tool

Repair or Replace Advisor

Answer a few questions about your water heater, its age and what it is doing, and see a plain-English lean toward repair or replacement.

Open the Tool

Before and After

See the Difference

Drag the handle to compare. Photos are illustrative.

Before: A utility closet with an old rusty tank water heater with corrosion streaks, scale stains on the floor and tired piping, dim light — **Rusted Water Heater to New Water Heater**A rusted, leaking tank was swapped for a new water heater with clean, tested connections.

After: The same utility closet, now with a new clean water heater with new connections, a drain pan and a clean floor, same angle and same light — **Rusted Water Heater to New Water Heater**A rusted, leaking tank was swapped for a new water heater with clean, tested connections.

Photos on this site are illustrative and show typical homes and businesses, not completed Prodigy Plumbing & Drain projects. Every property is reviewed before work or a written estimate, and results depend on the condition of the plumbing. Tools on this site are planning guides, not diagnoses.

Water Heater Installation and RepairNo Hot Water RepairHot Water Recirculation SystemsRepair or Replace Advisor

Serving Nashville and 33 more Middle Tennessee cities.

Good to Know

Questions About Tankless Water Heaters

Still have a question?

Call (629) 276-6322

Will a tankless heater give me endless hot water?

It heats water as you use it, up to its flow capacity. We size the unit to your household.

Do tankless heaters need maintenance?

Yes. Periodic flushing is recommended, especially where water has minerals.

Can you replace my tank with a tankless unit?

Yes. Gas, venting and electrical needs are checked first.

Do you service tankless heaters you did not install?

Yes. We diagnose and repair common brands.

Free Estimate

Need a Plumber? Let’s Talk.

Tell us what is going on, whether it is a leak, no hot water, a fixture upgrade or a remodel, and we will get back to you quickly. For an emergency, skip the form and call (629) 276-6322 any hour.

Call us today(629) 276-6322

Get Your Free Estimate

Prodigy Plumbing & Drain is a plumbing company serving Nashville, Franklin and Middle Tennessee for repairs, water heaters, repiping, fixtures, remodels and emergencies, open 24 hours.

Tankless Water Heaters in Nashville

Endless hot water and a smaller footprint. We install and service tankless.

A Great Fit If You…