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Professional plumber repairing internal components of a residential tankless water heater.

Tankless Water Heater Installation & Repair in Carmel

A storage tank water heater holds a fixed supply of hot water and stops delivering once that supply runs dry. Tankless systems skip storage altogether, firing only when a fixture calls for hot water and running as long as the tap stays open.

Steg Plumbing installs, repairs, and maintains on-demand systems for homes throughout Carmel and the rest of Hamilton County. Our certified technicians size each unit to the home in front of them rather than defaulting to whatever fits the old tank’s footprint.

Call (317) 286-6747 to schedule tankless water heater service in Carmel.

Licensed plumber inspecting and servicing a residential tankless water heater system.

Tankless Water Heater Service From Level 3 Certified Plumbers

Sensors, modulating burners, and flow meters give an on-demand system far more working parts than a storage tank ever had. Steg Plumbing requires Level 3 certification for every tankless installer on our crew, with ongoing training as manufacturers update their equipment. Our licensed, bonded, and insured technicians have Carmel covered, day or night

Find the Right Service for Your Home

No Hot Water? We’re Available 24/7

Tankless units fail differently than tanks do, and a locked-out error code or a failed ignition can cut hot water off with no warning. Steg Plumbing answers emergency calls at any hour and services all major tankless brands. Get your unit diagnosed and running again.

Professional tankless water heater installation with digital temperature display in a residential utility room.

Signs It’s Time to Switch to Tankless

The decision to switch usually gets made for you, and not on a convenient day. Watch for these before it does:

  • The Tank Is Past 10 Years: Most storage units last 10 to 12 years, and a tank at that age is already running on borrowed time.
  •  Hot Water Runs Out Fast: Back-to-back showers that go cold mean the tank can no longer recover quickly enough for your household.
  •  Rust or Sediment in the Hot Water: Discolored water points to corrosion inside the tank, which no repair reverses.
  •  Moisture Around the Base: A sweating or puddling tank is leaking, and a full tank failure sends 50 gallons across the floor.
  • Energy Bills Keep Climbing: Standing supply reheats around the clock, so an aging tank costs more every year to run.

Ready to stop replacing tanks? Schedule a free tankless estimate in Carmel.

Licensed plumber repairing a residential tankless water heater with professional tools during maintenance.

Why Carmel Homeowners Choose Steg Plumbing

Installing a tankless unit correctly is what determines how long it lasts. Here’s what comes standard on every job:

  • Respect for Your Home: Uniformed technicians, marked trucks, floor protection, and a cleaner space than we found.
  • Honest Numbers Up Front: One flat rate, explained before the work starts. No surprises on the invoice.
  • Navien Equipment We Stand Behind: One of the best tankless water heaters on the market, with up to 96% thermal efficiency, a 5-year parts warranty, and a 15-year heat exchanger replacement program.
  • Hard Water Expertise: Hamilton County minerals leave scale inside tankless units. Our maintenance plan schedules the flushing that stops it.
  • A Trusted Local Reputation: Members of the Better Business Bureau® and the Indiana Builders Association, held to a standard the whole industry can see.

Have Questions About Going Tankless?

Should I repair or replace my tankless water heater?

Repair usually makes sense for units under 12 years old with a single failed component, like an igniter, flow sensor, or circulation pump. Replacement becomes the better call when the heat exchanger has scaled past recovery or repairs start stacking up within the same year. Our technicians will give you both numbers so the decision is yours during your free estimate.

Why do you install Navien tankless water heaters?

Navien pairs high thermal efficiency with a warranty structure that holds up over the life of the unit, making it one of the best tankless water heater lines. Several models support recirculation, keeping hot water closer to distant fixtures without running new supply lines through a finished basement. Our Level 3 installers work with the line daily, so the model recommendation comes down to fixture count, gas supply, and venting access at your address.

Can an electric tankless water heater serve a whole house?

An electric tankless water heater performs best in smaller homes, additions, garages, and single-fixture applications. Larger homes with multiple bathrooms usually need a gas unit to keep pace during peak morning demand. Our plumbers will evaluate your electrical panel capacity before recommending either direction.

Can my existing tank be converted to a tankless system?

Most homes can make the switch, though the conversion involves more than swapping one unit for another. Gas models often need a larger gas line and new venting routed to an exterior wall, while electric units depend on available panel capacity. We’ll check all three during your free estimate and include any required upgrades in the flat rate.

What does tankless water heater maintenance involve?

Annual service covers flushing the heat exchanger with a descaling solution, cleaning the inlet filter, inspecting the burner and venting, and clearing stored fault codes. Central Indiana’s hard water makes that yearly flush non-negotiable. Our Maintenance Plan keeps the appointment on the calendar so it never slips.

Over 100+ 5-Star Reviews!

Hear from Happy Customers in Carmel, IN

“Ryan was wonderful! He quickly found not only the issue with our new water heater but also detected & fixed a gas leak we were not even aware of. He was prompt, friendly, courteous & professional. We couldn’t have asked for a better plumber & we will definitely request him should another need arise. Thanks so much Ryan!”

Cindy Pearson
Rating: 5

“Ryan from Steg was absolutely great. From his punctuality of showing up on time, to his communication of the process, and down to the execution of the work he did, I am very satisfied. Should I ever have any issues in the future I hope Ryan would be the one to come back and handle the job.”

Cody Guarriello
Rating: 4.3

“Great service! Tech Drew Budd was prompt, personable & efficient…service with a smile! Steg will always be my go to for plumbing needs in the future!!”

Cindy Winters
Rating: 5
Licensed plumber performing diagnostic testing and maintenance on a residential tankless water heater.

Ready for Endless Hot Water in Carmel, IN?

Running out mid-shower or restarting a unit over a flashing code has no place in a home. Steg Plumbing handles tankless water heater installation, repair, and maintenance with flat-rate pricing and financing options that spread the cost out.

Give us a call to request service and schedule your free estimate.