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Specials Save up to $200 4.8 · 53 Google reviews (815) 609-3150
Tankless Water Heaters in Plainfield, IL

Family-owned · Plainfield Local

4.8 from 53Google reviews

Tankless Water Heaters in Plainfield, IL

Installation, repair, and maintenance by background-checked technicians who've served Chicagoland for 24 years.

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tankless water heaters work, professional service in Plainfield, IL

Plainfield Plumber for Tankless Water Heaters

Leto Plumbing & Heating, Inc. installs, repairs and maintains tankless water heaters in Plainfield, IL and across Chicagoland, and has since 2002, so you stop paying to heat 40 gallons of water around the clock whether anyone's showering or not. Call (815) 609-3150 and we'll work out the right size and fuel type for your home before we pick up a wrench.

Will County water is hard enough to leave visible scale on fixtures, and that same buildup inside a heat exchanger is the fastest way to cut a tankless unit's efficiency and life. We descale as part of routine hot water heater maintenance. We carry 4.8 stars across 53 Google reviews, and every technician is background-checked.

Why Plainfield Homeowners Switch to Tankless

No More Cold Showers

It fires on demand as long as water flows, so the tank never runs out, even with two or three bathrooms going in the morning.

Less Energy Used

It heats only what you use. There's no tank of water being kept hot around the clock.

Lifespan Over 20 Years

A tank typically lasts 8 to 12 years. A well-maintained tankless unit can last over 20, with annual descaling in hard water.

Space Back in Your Utility Room

It mounts on the wall and takes a fraction of the footprint of a 50-gallon tank.

Hard Water Reality

Will County Water and Your Tankless System

Plainfield's water is moderately hard, about 6.3 grains per gallon, according to the Village of Plainfield. Calcium and magnesium collect in the narrow passages of the heat exchanger, restricting flow. The first symptoms are fluctuating temperature and error codes on the display, then premature failure. How often you need descaling depends on your water and usage, and we'll tell you straight after inspecting the unit. To reduce hardness before it reaches your equipment, ask about water filters.
tankless water heaters work, professional service in Plainfield, IL

Installation

Getting the Right Size for Your Plainfield Home

Undersizing is the most common tankless mistake we see, and it's expensive to correct. A 1,400-square-foot ranch with two occupants needs a different unit than a four-bedroom home running two showers and a dishwasher at once. We size for your peak flow demand and incoming groundwater temperature, which drops sharply in January and February. We also check gas line capacity or your electrical panel first; some homes need a gas line upgrade. The full process is covered under water heater replacement, and we handle the permitting conversation with the building department.
no more cold showers work, professional service in Plainfield, IL

Repair and Maintenance: What We Actually Do

Tankless systems need less maintenance than tanks, not none.

Flush and Descale the Heat Exchanger

We circulate descaling solution to dissolve mineral buildup. It's the most important service item for efficiency and lifespan.

Inspect Venting and Gas Connections

Blocked or poorly sealed venting is a safety issue. We check the full vent path and confirm gas connections are tight and to code.

Test Flow Sensors and Error Codes

We diagnose and repair the cause of an error code instead of clearing it and walking away.

Verify Temperature and Pressure Settings

We set temperatures for your usage and check the pressure relief valve.

Straight from Google

What Plainfield Homeowners Say

4.853 verified Google reviews
Chris gave us EXCELLENT service! Focused on the plumbing issue and walked us thru what all he did! Polite and answered all of our questions!
Kathy WendellSep 2026 · Google
Written on behalf of my mom Annie: I am very satisfied with Chris Leto's service. He addressed the issue quickly and professionally. Charged a fair price.
Alvin KFeb 2026 · Google
In February of 2026 I used Leto Plumbing & Heating on two occasions. First for an emergency after hours weekend call when my sump pump line was frozen during our recent sub-zero weather. The second was a routine maintenance call to flush my hot water heaters. Both times the individuals that came out were pros who were friendly, knowledgeable and got the job done right the first time. Would highly recommend!
Craig LattoFeb 2026 · Google
Spectacular service! On time ✔️ Fast troubleshooting ✔️ Explained the problem clearly ✔️ Fixed repair in less than an hour ✔️ Fur babies approved ✔️ Good human being ✔️ Father son family owned ✔️ My go to for all HVAC problems ✔️
DeAnn CarringtonJan 2026 · Google
Leto Plumbing is #1 for Plumbing Services! Chris did a great job fixing our problem. They are prompt, courtesy and fair priced!! ⭐️⭐️⭐️⭐️⭐️
Dave BernholdtMay 2026 · Google
Open clock under sink. Very professional service. Good result. Reasonable price.
Simon SongFeb 2026 · Google
Leto Plumbing has been servicing the plumbing and HVAC in our homes for many years. Rick and Chris, father and son, are amazing in every way. They are reliable, neat, courteous, and knowledgeable in all areas of plumbing and HVAC. They go out of their way to rush out to our home for needed repairs and new work. They may not be “cheap”, but you can rest easy that their work is top quality and will give you peace of mind. TFK St. Charles
Ted KawczynskiFeb 2026 · Google
Very happy with the service received by Leto plumbing. Starting with phone call made, very nice and was able to get us scheduled next day. Chris, technician, was earlier than originally expected (which was great), he explained everything, was very courteous and timely. Extremely happy with service provided and will be calling Leto for any future needs.
Christy MundyDec 2025 · Google
Read all 53 reviews

In the field

A look at our work

tankless water heaters work, professional service in Plainfield, IL

Ready to Go Tankless in Plainfield?

We handle sizing, permitting, installation and annual maintenance. Free estimates from background-checked technicians.

  • ★ 4.8 on Google
  • BBB A+
  • Licensed & insured
24/7 emergency service (815) 609-3150
Request an estimate Easy payments & low financing

Frequently asked questions

Do I need a permit for tankless water heater installation in Plainfield?
Yes. In Plainfield, water heater installations require a permit from the Village of Plainfield Building Department and an inspection before the work is closed out, to verify venting, gas line and installation meet the Illinois Plumbing Code. We walk you through the permit requirement before we start.
My tankless heater in Plainfield keeps showing an error code. What does that mean?
The code flags a specific fault: a flow sensor issue, ignition failure, venting blockage, or scale triggering a thermal shutoff. It tells you something is wrong, not how to fix it. We diagnose from the code and the unit's condition, and a technician can typically reach you the same day.
How long will a tankless water heater last in a Plainfield home?
A well-maintained tankless unit can last over 20 years. That assumes annual descaling, which matters with Will County's hard water, and timely repair of failing parts. A neglected unit in hard water can fail in under a decade.

Related

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No obligation · Responds within 1 business day

By submitting this form you agree that we may contact you about your request and share your name and email address with partner companies for email marketing. We never share your mobile number or text message consent with third parties or affiliates for marketing or promotional purposes.