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Top-Rated Water heater repair or service pros in Saint Charles - Updated Nov 2026

Avatar for Super Handy Man, LLC
Super Handy Man, LLC
4.9(
141
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"SuperHandyMan was very responsive to my needs. Our 22year old water heater needed to be replaced. Once a scheduled time was agreed, the service was fast and efficient. Of all the companies contacted, the price was the best. 5 stars!!!"
Response time5 hrs
Response rate87%
9 neighbors recently requested a quote
Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I needed to replace my parents' 40 year old AC Condenser and coil, and replace it with something that worked with the new furnace my father got installed four years prior. They were able to do the work requested, and also offered to redo the furance installation as the previous company installed it right on the basement floor where any backup/water could possibly get into the system. They were very prompt and showed up on time/on schedule. They were very upfront about costs and pricing and there were no last-minute price changes or hidden fees, which I appreciate. Work was done well and they ensured that everything worked before leaving the job site. The gentlemen working were very professional and understanding. I highly recommend them for anyone looking to replace their HVAC or to correct work that was previously poorly done."
Additional Photos
Response time2 days
17 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Sam Marsala was very good at diagnosing my furnace trouble, the fix was simple to my relief. My water heater was on its last legs. Sam diagnosed the trouble and we had Sam install a new Raheem water heater. He was very quick to respond to my needs and explained very clearly the trouble found. Installation was really done neatly and he left the work area very clean. I am more then satisfied with the work, product and technician. Well done."
A/C replacement
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for MAPLEWOOD PLUMBING
MAPLEWOOD PLUMBING
4.8(
337
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"Jacob thoroughly looked over everything; water lines, gas line, igniter, gas valve, connections, etc.. He took the time to make sure everything was working properly and even educated me on a few things I didn't know."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Mabudees Property Solutions
Mabudees Property Solutions
5.0(
17
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Amazing experience from start to finish. Super responsive, professional, and easy to work with. The water heater installation was done quickly, cleanly, and exactly as promised. Fair pricing, great communication, and quality work — I’d absolutely hire them again."
Work
Work
Work
Bathroom Shower Remodel
Bathroom Shower Remodel

+7

5 neighbors recently requested a quote
Avatar for Go Time Plumbing Services
Go Time Plumbing Services
4.8(
46
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Warranties offered

"Eric is exceptional in his profession I had an outside spigot to be replaced which is a tricky one as inside pipe deep in wall and no other plumbing service able to identify but Eric found it able to fix and made easy even for future relairs and fix in case needed His attitude and professional approach is 5 star From now on he is my official plumbing service for any future needs Highly recommend"
Response time6 hrs
Response rate100%
112 neighbors recently requested a quote
Avatar for On Time Experts
On Time Experts
4.8(
104
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

When your home needs help, count on the team that does Whatever It Takes to make it right. On Time Experts Heating, Air & Plumbing, formerly Hosack Plumbing, Heating & Cooling, now brings together the experience of Hosack and Al-Don. We provide trusted heating, cooling, plumbing, and air and water quality services throughout O’Fallon and the Greater St. Louis area.

Recommended by97%of homeowners
Avatar for Mr. Rooter Plumbing of St. Charles
Mr. Rooter Plumbing of St. Charles
4.2(
340
)
Water Heater - Repair or Service

Serving Saint Charles, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"A photo was sent so we knew who would be coming for our repair. He called and asked if it was okay to arrive sooner than the scheduled time...Yes! He was professional, assessed the needed repair, explained what he needed to do and was completed the job efficiently. He was very thorough! If we need repairs in the future we will definitely request him! Thank you Mr. Rooter"
Mr. Rooter of St. Louis
Mr. Rooter of St. Louis
Mr. Rooter of St. Louis
Mr. Rooter of St. Louis
Mr. Rooter of St. Louis

+7

Response time6 hrs
36 neighbors recently requested a quote
Recommended by89%of homeowners
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FAQs for water heater repair or service projects in Saint Charles, MO

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 Saint Charles, MO 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.