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Top-Rated Tankless water heater installers in Libertyville - Updated Nov 2026

Avatar for Aqua Knight Plumbing Co.
Aqua Knight Plumbing Co.
5.0(
16
)
Tankless Water Heater - Install

Serving Libertyville, IL and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

With 24 years of experience we are dedicated to providing our clients with the very best in service, installation, and repairs for all phases of your plumbing needs. We specialize in a variety of residential and commercial services from water heater installations, sewer main installations, sump pump installations, repairs and so much more! We take pride in the attention to detail put into each of the projects \nwere involved with. Were known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. \n \nAll Work Is Warrantied - Inquire Within \n \nMilitary Veteran and First Responders Discounts Available - Inquire Within \n \nDeposits May Be Required - Inquire Within \n \nAccepts Cash, Checks & Major Credit Cards \n \nFinancing Options Are Available - Inquire Within \n \n24/7 Emergency Services Available \n \naquaknightplumbing.com

New Sump Pit
Outside Clean Out
Outside Clean Out
March 2026
July Clog Log

+173

5 neighbors recently requested a quote
Recommended by31%of homeowners
Avatar for J&S Plumbing, Inc.
J&S Plumbing, Inc.
4.6(
890
)
Tankless Water Heater - Install

Serving Libertyville, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1991

Free estimates

Emergency services offered

"I thought it went well but took longer than I expected. Mechanic Leo bought the new tank and pipes in when he arrived. I believed Leo arrived around 7:30 pm. He completed the installation around 11:30.pm Leo went out to his truck, stayed outside for a long time, in fact, my son Vann went out to ask him what was taking so long. When he came back in, Leo told me there would be an extra $100.00 We explained that we had been quoted a price of $1,300.00.. so he said to call the i office and they would straighten everything out, That’s why I called the next day. Everything seemed okay. When I notice the water was much slower, I called to let J&S know. The person asked me a few questions and advised me to check the faucets. Well, that didn’t work and the water was not as hot as before the installation. I called again to explain to J & S what was happening. The person there told me that they didn’t have to come out, and I still owed them $100.. so that's why I called Angi So I decided to check all of the faucets and I realized that the water flow was not coming out properly from any of the faucets So this is what happened. I am just appalled that they haven’t come out or called as of this date. I need them to come out and check this out, something went wrong. We could do a FaceTime inspection that would show the flow of the water."
Response time10 hrs
3 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for CAB Backflow, Inc
CAB Backflow, Inc
5.0(
18
)
Tankless Water Heater - Install

Serving Libertyville, IL and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I'm gradually switching from gas to a mostly electricity-powered home. C.A.B. didn't try to talk me into go with the same old fossil fuel water heater. Other plumbers wanted to take the course of least resistance and just install another gas unit. C.A.B. had the expertise and initiative to take on this complicated, future-looking project. We never run out of hot water!"
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+12

Recommended by100%of homeowners
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Tankless Water Heater - Install

Serving Libertyville, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"It couldn’t have gone better! Carl was experienced, knowledgeable and friendly. Plus, he smelled gas which is why he replaced the valve on my water heater. It was a great visit!"
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Kwik Serv Plumbing Heating and Cooling
Kwik Serv Plumbing Heating and Cooling
4.8(
20
)
Tankless Water Heater - Install

Serving Libertyville, IL and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

Logo
May Special
0% Financing
2 neighbors recently requested a quote
Recommended by52%of homeowners
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