Top-rated water heater repair or service pros.

Get matched with top water heater repair or service pros in Lake Saint Louis, 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.

Find Water heater repair or service pros in Lake Saint Louis

Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
344
)

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"It started off bad because I had the water heater installed, submitted my paperwork for my rebate for the installation and then my rebate ended up not getting honored because the water heater that was installed didn't qualify for Spire's rebate. Turn's out that the water heater that would fit my location as well as satisfy Spire's rebate, I would have had to wait 5 to 6 weeks for that specific water heater so, the owner of Hosack's Plumbing cut me a check for the amount of the rebate and the amount over time that the new water heater would have saved me. Not the perfect situation but, that was a win win for me as well as Hosack's Plumbing because a good water heater was installed just not one that would quite fit the Spire requirements for the rebate! Hence we didn't need to take a brand new water heater out and replace it with another water heater that was just .05 UEF Higher!"
.
.
.
.
.

+2

Response time6 days
8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
513
)

Serving Lake Saint Louis, MO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"Steve arrived on time, quickly diagnosed the problem with the water heater, gave me options to fix/replace without trying to steer me to one option or the other, and answered my questions. I opted for replacement and he got the appointment set up for the next day so we wouldn't be without hot water any longer than necessary."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

Response time1 day
Response rate86%
17 neighbors recently requested a quote
Avatar for Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Cond
Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Cond
4.7(
272
)

Serving Lake Saint Louis, 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
26 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Ambassador Plumbing L.L.C
Ambassador Plumbing L.L.C
5.0(
36
)

Serving Lake Saint Louis, 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 rate99%
Recommended by100%of homeowners
Avatar for Anton's Plumbing, Heating/Cooling Energy Experts
Anton's Plumbing, Heating/Cooling Energy Experts
4.6(
81
)

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Total Comfort did an excellent job. I recommend them. Also I have used Home Advisor for other repair contacts and have been happy...but am not sure I would use them again for one reason, which is that Sears hvac representatives called 15 plus times daily after I declined to use them because of previous issues with them. They will no doubt cause them to lose customers."
Response time6 hrs
Recommended by95%of homeowners
Avatar for Mr. Rooter Plumbing of St. Charles
Mr. Rooter Plumbing of St. Charles
4.2(
339
)

Serving Lake Saint Louis, 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
46 neighbors recently requested a quote
Recommended by89%of homeowners
...
Showing 1-10 of 77
FAQs for water heater repair or service projects in Lake Saint Louis, 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 Lake Saint Louis, 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.