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Top-Rated Water heater repair or service pros in Round Lake - Updated Nov 2026

Avatar for Aqua Knight Plumbing Co.
Aqua Knight Plumbing Co.
5.0(
16
)
Water Heater - Repair or Service

Serving Round Lake, 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 All Affordable Plumbing Inc
All Affordable Plumbing Inc
4.9(
178
)
Water Heater - Repair or Service

Serving Round Lake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Emergency services offered

Warranties offered

"Tried this service as a new home owner. Very quick response. Came to our home within hours of call and replaced our toilet. Terrific customer service! Very Knowledgeable in the space of plumbing expertise. We are satisfied with our service. Very affordable!"
Pipe was completely packed! Drain cleaning was not going to do the  job here!
Master Bath - Chicago
Geberit wall mounted toilet carrier installed. Wall mounted faucet installed. Hall Bath.
You can see the crud inside the pipe accumulated over 60+ years!
Old Broken Clay pipe just outside the foundation wall.

+41

Response time11 hrs
Recommended by96%of homeowners
Avatar for JVS Plumbing Company
JVS Plumbing Company
4.9(
120
)
Water Heater - Repair or Service

Serving Round Lake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"The job cost a little more than anticipated, but that was because the WATER HEATER was 20 years old and had to upgrade to a 40 gallon rider than a 30 gallon. Electrical and source lines were run properly and brought up the code. Very pleased with their service and their follow up. Communication was great."
Drinking fountain install
Drinking fountain install
75 gallon water heaters
Grease interceptor instal
Grease interceptor instal

+45

Response time1 day
28 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for CAB Backflow, Inc
CAB Backflow, Inc
5.0(
18
)
Water Heater - Repair or Service

Serving Round Lake, 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!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

Recommended by100%of homeowners
Avatar for Ultimate Rooter Services
Ultimate Rooter Services
4.8(
203
)
Water Heater - Repair or Service

Serving Round Lake, IL and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"Antonio from Ultimate responded quickly and scheduled conveniently. He came out and gave me options for replacing or repairing. I opted for replacing the water heater with a brand new one and they were quick, efficient and clean. Not to mention couple hundred dollars less than the competitor."
Response time3 hrs
Response rate90%
25 neighbors recently requested a quote
Avatar for Mr. Rooter Plumbing Of Cook County
Mr. Rooter Plumbing Of Cook County
3.9(
42
)
Water Heater - Repair or Service

Serving Round Lake, IL and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"I coordinated the work with Mr. Rooter's home office. Unfortunately, they didn't relay to the technician that he needed certain materials to get the job done. This caused about a 60 minutes of extra time for the technician to search around for the part and then go pick it up. Other than that, the water heater gas control valve was successfully installed and I've got hot water again."
Response time8 hrs
Response rate99%
83 neighbors recently requested a quote
Avatar for Cosmic Plumbing LLC
Cosmic Plumbing LLC
5.0(
16
)
Water Heater - Repair or Service

Serving Round Lake, IL and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"We had Chad from Cosmic Plumbing out to replace our old water softener. He was very professional and informative from start to finish! He was fairly priced and easy to work with. Highly recommend for all your plumbing needs!"
4 neighbors recently requested a quote
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FAQs for water heater repair or service projects in Round Lake, IL

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The Round Lake, IL homeowners’ guide to water heater repair or services

From average costs to expert advice, get all the answers you need to get your job done.