Top-rated water heater repair or service pros.

Get matched with top water heater repair or service pros in Wentzville, MO

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

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

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

Serving Wentzville, MO and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"I thought I needed to replace my water heater. When I called Don had me trouble shoot several things and it turned out that his suggestions corrected the current situation even though my water heater is 22 years old. His personal service was so friendly that I will definitely use Super Handy Man when this old unit does go out"
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 Wentzville, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"This was a complex retrofit tankless water heater installation and out of 30+ companies called and solicited for this project, Brett and Dunn's HVAC was the only company to 1) entertain performing the installation correctly (gas line sizing and calculations), 2) had prior experiencing working with tankless heaters, and 3) took the time to work with me on a long list of specifications. These are bulletproof systems if the installation is done correctly and Dunn/Brett took the time to ensure the install was on point and everything went smoothly. They also installed a softener and filtration system. Everything went well from bid to install and I highly recommend Brett and Dunn's - will use again as I could not be more pleased!"
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 Wentzville, 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 Ambassador Plumbing L.L.C
Ambassador Plumbing L.L.C
5.0(
40
)
Water Heater - Repair or Service

Serving Wentzville, MO and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Gave a bid at 8 AM and came back with a 40 Gal. water heater 2 hrs. later. Did the work and my renter had hot water in about 35 minutes. Good job. They have got my business. Thanks."
Response time1 day
Response rate100%
Recommended by90%of homeowners
Avatar for On Time Experts
On Time Experts
4.8(
104
)
Water Heater - Repair or Service

Serving Wentzville, 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 Wentzville, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Noah did a wonderful job explaining what was wrong with my water heater. I appreciated him reviewing all about the new water heater. A very pleasant experience."
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
Avatar for Winnovation Plumbing and Drain
Winnovation Plumbing and Drain
5.0(
7
)
Water Heater - Repair or Service

Serving Wentzville, MO and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"This is a good company to deal with. James, the owner, was out within one hour to diagnose our problem. The next morning the technicians, Brian and Josh were out to take care of our drain issues. Brian made a point of showing me the camera footage of the main drain. The did a great job on the main and two other drains. They also cleaned up very well when they were done. Brian also noticed an issue with our bathtub stopper and fixed it without an extra charge. The pricing was transparent. They have a nice email notice system and called when they were on the way. The three men I worked with were all very professional and easy to deal with. I would not hesitate to use them again. Phil Lykens"
Water heater install
Shower Valve replacement
Shower Valve replacement
Stack replacement!
Stack replacement!

+3

15 neighbors recently requested a quote
Jerry Kelly Heating, Air Conditioning, Plumbing & Electrical - P
New to Angi
Water Heater - Repair or Service

Serving Wentzville, MO and surrounding areas

Approved

In business since 1977

Free estimates

Credit card accepted

Since 1977, Jerry Kelly Heating, Air Conditioning, Plumbing & Electrical has helped homeowners in St. Charles and St. Louis Counties keep their homes comfortable, safe, and running smoothly. From repairs and maintenance to new installations, our team is committed to quality workmanship, dependable service, and customer satisfaction.

Avatar for Express Plumbing, LLC
Express Plumbing, LLC
4.4(
289
)
Water Heater - Repair or Service

Serving Wentzville, MO and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"James went above and beyond to help locate and repair an in home water line break due to pipes freezing. (Like trying to find a needle in a haystack) This was our 3rd plumbing issue we've called Expert Plumbing to repair. Fast response and a fair price."
picture
picture
water heater installed
new stack
bathroom

+2

Response time50 mins
Recommended by96%of homeowners
...
Showing 1-10 of 71
FAQs for water heater repair or service projects in Wentzville, 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 Wentzville, 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.