Serving Chicagoland Since 1993

Tankless Water Heaters in Joliet, IL

Endless hot water and a heater on the wall instead of a tank on the floor. In Joliet, tankless also means a plan for mineral-heavy water. We install, repair and descale tankless units and tell you honestly if one fits your home. From our office on Ottawa 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 fires up only when a hot tap opens. Water flows through a heat exchanger, gets heated on the spot and goes straight to the fixture, so there's no tank to run dry. The unit has to be sized for every hot tap you run at once, and it needs the gas supply, venting or electrical service to match. In hard water, the heat exchanger also needs regular descaling to keep working at full output.

Know Your Options

Tank vs. Tankless on Joliet Water

How they compare, with Joliet's water in mind:

TankTankless
Hot waterRuns out when the tank doesContinuous, up to the unit's flow rate
LifespanAbout 8 to 12 years, often less with heavy sedimentOften longer, if it's descaled regularly
Upkeep on mineral-heavy waterYearly flush, or more oftenRegular descaling, plus a softener in many homes
InstallUsually a straight swapMay need a bigger gas line, new venting or electrical work

We look at your water, household and home before recommending either.

Local Knowledge

Tankless in Joliet Homes

Tankless can work very well in Joliet. It just needs a plan for the water.

Scale Is the Main Enemy

Joliet's well water is naturally rich in minerals, and scale builds up inside a tankless heat exchanger. Regular descaling, and often a water softener, keeps it running at full output.

Gas Line Capacity

A gas tankless unit can need far more gas than the old tank. Older homes may need a bigger line. See gas line installation.

Venting Out the Wall

Most gas tankless units vent through the side of the house. On older homes with close neighbors, we plan the vent location carefully.

The J. Blanton Difference

What Happens When You Call J. Blanton

A good tankless install starts with an honest answer.

1. We Check Your Water and Your House

Hardness, gas supply, venting and electrical.

2. Tank vs. Tankless, Honestly

Costs, lifespans and upkeep side by side.

3. Flat Price, Clean Install

One number before work starts.

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 Joliet Homeowners

Yes, with regular descaling. Many homes pair it with a softener.

Yes, as long as it's descaled regularly. Joliet's mineral-heavy water builds scale in the heat exchanger, which cuts output and shortens its life. Many homeowners add a softener to protect it.

Often about once a year, sometimes more without a softener.

Many homes descale about once a year. Without a softener, or with heavy use, it may need it more often. We'll set a schedule for your unit.

Often, for households that run out of hot water. Older homes may need upgrades first.

For many households, yes: continuous hot water, more floor space and a longer life with good upkeep. Older homes may need a bigger gas line or new venting, so we show you what yours needs before you decide.

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

It depends on the unit, any gas, venting or electrical upgrades and where it goes. 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 Joliet

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

Sewer Repair

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

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

Sump Pumps

Sump pump repair, replacement and battery backups to keep your basement dry through heavy rain.

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Interior wall with bubbling, cracked paint and water stains above the baseboard, a sign of a hidden leak behind the wall

Leak & Pipe Repair

Leaking pipes, drips under the sink and hidden leaks behind walls and ceilings.

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J. Blanton plumber leaning over an open toilet tank to check the fill valve during a toilet repair

Toilets & Showers

Running toilets, worn-out shower valves and new fixture installs.

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Local Office, 24/7 Phone

Thinking About Going Tankless?

Our Joliet office is at 311 N Ottawa St, Suite 2, and our phone line is open 24/7.

We also serve Crest Hill, Lockport, Rockdale, Romeoville, Plainfield, New Lenox, Manhattan and more.

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