Serving Chicagoland Since 1993

Tankless Water Heaters in Naperville, IL

Hot water for a big household without running out, and a heater on the wall instead of a tank. We install, repair and descale tankless water heaters across Naperville, and we'll tell you honestly if one fits your home. From our office on Main Street.

Plumber working on the copper water lines of a wall-mounted tankless water heater in a basement
The Basics

How a Tankless Water Heater Works

A tankless heater warms water only when a hot tap is open. Cold water passes through a heat exchanger, a burner or element heats it on the spot and it flows to the faucet or shower. Since there's no tank, it doesn't run out. It does have a limit on how much hot water it can make at once, so sizing matters, and it needs the right gas line, venting or electrical service.

Know Your Options

Tank, Two Tanks or Tankless for a Naperville Home

For bigger households, there are three real options:

One Large TankTwo TanksTankless
Hot waterRuns out when the tank is emptyMore stored hot waterContinuous, up to the flow rate
SpaceFloor spaceTwice the floor spaceOn the wall
InstallUsually a straight swapExtra piping and ventingMay need a bigger gas line or new venting
UpkeepYearly flushTwo yearly flushesRegular descaling

We'll look at your household, gas service and venting before recommending any of them.

Local Knowledge

Tankless in Naperville Homes

Tankless often makes sense in Naperville's larger homes. A few checks decide whether it fits yours.

Sized for Several Showers

We size the unit for your busiest moment, like two showers and a dishwasher on a winter morning.

Gas Supply

A tankless unit can need much more gas than the old tank. Some homes need a larger line from the meter. See gas line installation.

Venting Through the Wall

Most gas tankless units vent out the side of the house. We plan the location around windows, decks and walkways.

Upkeep Is Part of the Deal

Tankless heaters last longer than tanks, but they need regular descaling to stay at full output. We'll set a schedule for your unit when we install it.

The J. Blanton Difference

What Happens When You Call J. Blanton

A good tankless install starts with an honest answer.

1. House Check

Gas, venting and electrical before you see a price.

2. All the Options

Tank, two tanks or tankless, compared honestly.

3. Flat Price, Clean Install

One number first.

773-724-9272
J. Blanton plumber in shoe covers on a home's front steps with a sewer camera
Customer Stories

Tankless Water Heater Reviews

4.7 stars from 5,669+ Google reviews across all J. Blanton locations.

"Alex came out to provide a quote for a tankless water heater I wanted installed. He explained everything in so much detail, about the electric upgrade I would need, about how the heater will actually work 'in real life' (not just on paper). Then it turned out my electric couldn't support the tankless. [...]"

I B (Iza)
Verified Customer

"We had our water heater leak and Kyle from J Blanton came and installed a tankless system in only a few hours. It works amazing and he was very fast and thorough. Thanks for the great job Kyle."

Mike Olsa
Verified Customer

"Christian was fantastic l! He’s been here a few times for no drip club visits and he’s the man! Did our tankless water heater maintenance and was friendly and efficient, highly recommend 🙌🏼"

Jorge De La Vega
Verified Customer
Got Questions?

Tankless Water Heater Questions From Naperville Homeowners

Often, if you run out of hot water now. The install may need gas or venting work.

Often, yes, if you run out of hot water now. You get continuous hot water and more floor space. The install costs more if you need a bigger gas line or new venting, so we show you what your home needs first.

Sometimes. It depends on how many fixtures run at once. Some homes need two units.

Sometimes. It depends on how many hot taps run at the same time. Some larger homes do best with two units or a larger model. We'll size it for your peak use.

Yes. Scale, ignition and error codes are the most common issues.

Yes. The most common problems are scale buildup, ignition or flame sensor issues, error codes and venting. Regular descaling prevents many of them.

Sometimes. We check the line size and meter before quoting.

Sometimes. Many tankless units need more gas than the line to the old tank can deliver. We check the line size, the length of the run and your meter before we give you a price.

It depends on the unit and upgrades. You get a flat price first.

It depends on the unit, any gas, venting or electrical upgrades and where it's mounted. We give you a flat-rate price before any work begins, and financing is available.

Annual Protection Plan

Join the No Drip Club

Most plumbing problems start small. The No Drip Club brings a J. Blanton plumber to your home for regular maintenance, so small issues get caught before they turn into big repairs.

  • Two Free Professional Maintenance Visits per Year
  • 10% Discount on All General Plumbing & Sewer Services
  • 5-Year Parts and Labor Warranty on Approved Projects
  • VIP Priority Scheduling Status (Skip the Queue)
Learn More About the No Drip Club
No Drip Club mascot: an illustrated J. Blanton plumber holding a red pipe wrench
What We Fix

Plumbing Services in Naperville

J. Blanton plumbers working a sewer lining machine connected to the cleanout at a residential sewer repair

Sewer Repair

Tree roots, cracked pipe and repeat backups in the line from your house to the street.

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J. Blanton plumber checking the controls at the base of a basement water heater

Water Heaters

Repair and replacement for tank and tankless water heaters that leak, make noise or run out of hot water too fast.

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Plumber feeding a drain cleaning cable into an outdoor drain pit to clear a clogged line

Drain Cleaning

Slow, gurgling or backed-up drains in kitchens, bathrooms and basements.

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J. Blanton plumber working on the wiring of a basement sump pump pit

Sump & Ejector Pumps

Repair, replacement and battery backups for the pumps that keep your basement dry and drain a basement bathroom.

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Water spraying from a split copper pipe along a basement foundation wall

Burst & Frozen Pipes

Repair for pipes that froze or burst, from basement water lines to outdoor spigots.

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J. Blanton plumber showing a tablet photo of the garbage disposal installed under a kitchen sink

Garbage Disposals

Repair and replacement for garbage disposals that jam, leak or just hum.

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Local Office, 24/7 Phone

Thinking About Going Tankless?

Our Naperville office is at 200 S Main Street, Suite 3, and our phone line is open 24/7.

We also serve Aurora, Bolingbrook, Woodridge, Downers Grove, Darien, Glen Ellyn, Lombard and more.

Call Now: 773-724-9272
Need a Plumber?Call our Naperville Office
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