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.
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.
- Error code on the displayThe code points us to the failed part
- Unit will not fireIgnition, gas supply, or a flame sensor
- Hot water goes cold mid-showerScale, low flow, or a flow sensor
- Water takes longer to get hotScale building on the heat exchanger
- Never been flushedHard water scale is already forming
- Venting or exhaust issuesSealed venting must be right to run safely
- Running out at two fixturesLow gas supply or an undersized unit
- Thinking about going tanklessGas line and venting decide the price
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
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.
FAQ
Tankless Water Heater Questions, Answered
Service Areas
Tankless Water Heaters Throughout Louisville Metro
Golden Plumbing serves homeowners across Louisville and the surrounding communities.