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Top-Rated Tankless water heater installers in Carol Stream - Updated Nov 2026

Avatar for R.A. Mechanical, Inc.
R.A. Mechanical, Inc.
4.7(
363
)
Tankless Water Heater - Install

Serving Carol Stream, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"They were able to assess the job with a couple of photos to recognize the old power-vent heater I had and what a replacement would cost. We discussed options, and they could upgrade me to a tankless heater for a relatively small increase. Was in and out fairly quickly and we were very satisfied with the new tankless."
Misc
Misc
Misc
Misc
Misc

+63

Response time5 hrs
396 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Aqua Knight Plumbing Co.
Aqua Knight Plumbing Co.
5.0(
16
)
Tankless Water Heater - Install

Serving Carol Stream, 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

+169

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 Carol Stream, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1991

Free estimates

Emergency services offered

"They were great! Called at the agreed upon time frame, carried new water heater downstairs and removed old one and took away! Install was smooth and I had them booked in one day! Finally an honest plumber!"
Response time10 hrs
3 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Tankless Water Heater - Install

Serving Carol Stream, 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 DLA Sewer & Drain
DLA Sewer & Drain
5.0(
26
)
Tankless Water Heater - Install

Serving Carol Stream, IL and surrounding areas

Approved

Emergency services offered

Customers say: True professional

"Talk about above and beyond. Dorian texted me immediately and FaceTimed to instruct how to shut off the gas and water line at 8 o’clock at night. He was at my door before 8 the next morning ready to work. He had the water heater replaced and the area cleaned up before I heard from another plumber. The work was excellent and he was the most cost effective. 10/10 would use again and recommend to anyone needing his services."
Additional Photos
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+5

Response time7 hrs
Response rate100%
Recommended by61%of homeowners
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