Install, Repair, and Yearly Flush

Tankless Water Heater Installation
& Repair in Louisville, KY

Gas and electric tankless heaters, installed with the gas line, venting, or electrical work they need, and serviced every year so Louisville’s hard water does not wreck the heat exchanger. We check your gas supply and venting before we quote, so the price holds on install day.

Request Free Estimate (502) 402-9967

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Licensed & Insured

Same-Day Service

Upfront Pricing

Louisville’s Tankless Plumbers

What Tankless Really Takes in a Louisville Home

A gas tankless heater fires far more gas than a tank does, so the existing gas line often cannot feed it. Most gas installs need a bigger line run back toward the meter, new sealed venting through the wall, and a dedicated circuit for the controls. An electric tankless can need an electrical upgrade instead. That work, more than the unit on the wall, is why tankless costs more than a tank.

Our tap water runs about 7.2 grains per gallon, moderately hard, drawn from the Ohio River. That mineral scale cakes up inside the heat exchanger, and a tankless is far fussier about it than a tank. Plan on a descaling flush every year. Skip it for a few years and you will be shopping for a heat exchanger, the priciest part of the machine.

We install both gas and electric tankless heaters; for most Louisville homes gas is the better fit. Every number is in our tankless cost guide, and tank vs. tankless compares the two side by side.

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What We Do

Tankless Water Heater Services in Louisville, KY

Real prices from our price book, for gas and electric tankless.

Entry Gas Tankless, $5,300–$5,500

A mid-efficiency indoor gas tankless, installed with the gas line and venting it needs. About 4.7 labor hours on our price book.

Natural gas unit
Gas line sized for the unit
Sealed venting to code
10 to 12 year heat-exchanger warranty, 5 on parts

High-Efficiency with Recirculation, $6,400–$6,600

Gets hot water to the tap faster with a built-in recirculation loop and carries a longer heat-exchanger warranty. A bigger install, about 6.5 labor hours.

Built-in recirculation
Shorter wait at the tap
12 to 15 year heat-exchanger warranty, 5 on parts
More gas and venting work included

Descaling Flush, $500–$600

The yearly service that keeps a tankless alive on Louisville water. We flush the scale out of the heat exchanger before it builds up.

Every year on our hard water
Heat exchanger descaled
Inlet filter cleaned
Keeps the warranty years in reach

Tankless Diagnostic, $128.65

Error code, no fire, or water that goes cold? The diagnostic visit finds what is wrong before we quote any repair.

Error code read and traced
Gas supply and venting checked
Repair priced before work starts
All major brands

Tankless Repair

Ignition failures, flame and flow sensors, venting problems, and scale damage. We tell you when a repair makes sense and when the heat exchanger is the real problem.

Ignition and sensor repair
Venting corrections
Scale damage assessed
Navien, Rinnai, Noritz, Rheem

Tank to Tankless Conversion

Switching from a tank usually means a bigger gas line, new sealed venting, and a dedicated circuit for a gas unit, or an electrical upgrade for an electric one. We check before we quote, so the price we give you holds up on install day.

Gas supply measured first
New venting through the wall
Old tank hauled away
Permit handled

How It Works

From First Visit to Endless Hot Water

The gas line and venting are checked before the price is set.

Check gas, venting, and power

We measure the gas supply, plan the venting path, and confirm the circuit. These decide the price more than the unit does.

Written price

Entry or high-efficiency, with the gas line and venting work included, priced before we start.

Install and fire

Unit mounted, gas line run, venting sealed, and the heater fired and tested at the tap.

Flush every year

A yearly descaling flush keeps Louisville’s hard water from scaling the heat exchanger.

Is Tankless Right for You?

Tankless or a New Tank?

Tankless is a good heater for the right home. It is not the cheapest one.

Tankless Makes Sense When...

You run out of hot water with a tank today
You plan to stay in the home for years
You want the floor space a tank takes
You will keep up a yearly flush
Your home can take the gas line, venting, or electrical work it needs

A Tank Makes Sense When...

You want the lowest installed price
A tank has met your needs so far
You would rather skip a yearly service
Your gas line and flue already fit a tank
You may sell the home in a few years

Talk to a Louisville Plumber Today

Why Golden Plumbing

Why Louisville Calls Golden Plumbing for Tankless

Gas Line Checked First

A tankless needs far more gas than a tank. We measure your supply before we quote, so you do not find out on install day.

Real Prices, Published

Entry gas tankless $5,300–$5,500. High-efficiency $6,400–$6,600. Yearly flush $500–$600. Diagnostic $128.65.

Honest About Hard Water

Louisville water scales a heat exchanger. We tell you about the yearly flush up front, because skipping it is how tankless heaters die early.

Long Heat-Exchanger Warranties

10 to 12 years on the entry unit and 12 to 15 on the high-efficiency unit, with 5 years on parts. A yearly flush is what gets you there.

Licensed, Insured, Permitted

Gas lines and venting are run to code, leak-tested, and permitted where Louisville requires it.

All Major Brands Serviced

We service Navien, Rinnai, Noritz, and Rheem tankless heaters, whoever installed them.

Thinking About Tankless?

Get a Price That Holds on Install Day

We check your gas supply and venting first, then give you one written price. Monday through Friday across Louisville.

Request Free Estimate (502) 402-9967

FAQ

Tankless Water Heater Questions, Answered

How much does a tankless water heater cost in Louisville?

A tankless water heater runs $5,300–$6,600 installed from our price book. The entry gas unit is $5,300–$5,500; the high-efficiency unit with built-in recirculation is $6,400–$6,600. The full breakdown.

How often does a tankless need to be flushed?

Every year on Louisville water. Our tap runs about 7.2 grains per gallon, moderately hard, and that scale cakes up inside the heat exchanger. A descaling flush is $500–$600.

Do you install electric tankless water heaters?

Yes. We install both gas and electric tankless heaters. For most Louisville homes gas is the better fit, and an electric unit can need an electrical upgrade first.

Can my home switch from a tank to tankless?

Usually, with some work. A tankless needs new sealed venting, usually a bigger gas line, and a dedicated circuit for the controls. We check your gas supply and venting before we quote, so the price we give you holds up on install day.

My tankless shows an error code. What now?

Note the code and book a diagnostic visit, which is $128.65. The code points us to the failed part, and we price the repair before any work starts. Common tankless problems.