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Top-Rated Tankless water heater repair pros in Mchenry - Updated Nov 2026

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

Serving Mchenry, 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 JVS Plumbing Company
JVS Plumbing Company
4.9(
120
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Very friendly workers, did a great job, and were very careful about any messes they made. The tankless water heater they installed, couldn't have been installed any better."
Drinking fountain install
Drinking fountain install
75 gallon water heaters
Grease interceptor instal
Grease interceptor instal

+45

Response time1 day
26 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Toptec Heating, Cooling, Plumbing & Electrical, Inc.
Toptec Heating, Cooling, Plumbing & Electrical, Inc.
4.4(
614
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Emergency services offered

"TopTec responded immediately, scheduled the appointment for 8AM the next business day. Jason the plumber arrived early, concisely explained his planned actions, coordinated with other trades, professionally executed the installation of the tankless heater with minimal disruptions, cleaned up and left a happy customer. Toptec did an excellent job, for my next plumbing issue I will call Jason at Toptec."
Duct Cleaning Before/After
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Barrington Geothermal Lake Heat Exchangers
Barrington Geothermal - WaterFurnace Geothermal Heating/Cooling Systems with Desuperheaters

+48

Response time1 day
Response rate100%
10 neighbors recently requested a quote
Avatar for Cosmic Plumbing LLC
Cosmic Plumbing LLC
5.0(
16
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Chad was very professional, he analyzed the situation gave me multiple solutions, then fixed the issue. He was extremely respectful of my home, left it clean and in better working condition than when he arrived. Cosmic Plumbing will be our go to moving forward."
4 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Tankless Water Heater - Repair

Serving Mchenry, 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 TRIANGLE PLUMBING LLC
TRIANGLE PLUMBING LLC
5.0(
32
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

Triangle Plumbing, operated by a seasoned professional, offers comprehensive plumbing solutions for both residential and commercial clients. With years of experience and a commitment to excellence, we provide a full range of services, including installations, repairs, and 24/7 emergency assistance. Combining quality workmanship with competitive pricing, Nathan and his crew ensure customer satisfaction through transparent communication and prompt, efficient service. Contact Triangle Plumbing for expert solutions tailored to your needs and make us your dedicated plumbing contractor to address all your plumbing concerns with precision and care.

Recommended by73%of homeowners
Mr Goodwater Inc
5.0(
33
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

In business since 1985

Free estimates

Warranties offered

"The job went very well, I requested an estimate, and the representative came by and took a look at my water and system. Gave me the price options, and I asked when you can do the installation? He said now if you like. I had a new water softener installed within a few hours. Awsome service"
Response time12 hrs
Response rate100%
Recommended by96%of homeowners
Avatar for TDH Mechanical Heating & Cooling Contractors
TDH Mechanical Heating & Cooling Contractors
4.7(
366
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Great! They were able to come out two days later and got everything done before noon. Water heater was replaced with drain pan, the utility room was vented, and the heat was turned on right away. They also guaranteed that if the venting was deemed insufficient by People's Gas, that they would meet PG's request (within reason, of course) at no extra charge."
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+18

Recommended by94%of homeowners
The Plumbing Doctor
4.4(
77
)
Tankless Water Heater - Repair

Serving Mchenry, IL and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"We actually had called Emanuel Brothers first since their name was on the water heater. But, after the amount of time and money they quoted us I decided to check Angie's. We had John come out and take a look and he told us he could do the same work for almost $800.00 less! I can't say I didn't have some trepidation. First, just how is it possible to do so much less work than we were told would be necessary (we had 2 water heaters. Neither of which worked after nearly 20 years, that had to be removed first to make room). And, for so much less. Emanuel Brothers were so perplexed by our situation that they had to call the boss to come out and explain everything to us. But, John had this "no problem" kinda attitude. Both refreshing and disconcerting. But, in just a couple of hours he had not only delivered a new water heater, he had the other 2 removed and the new one installed. And its been working flawlessly.
"
Recommended by84%of homeowners
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