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

Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Water Heater - Repair or Service

Serving Foristell, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Technician spent an hour or more inspecting, testing and cleaning my AC and furnace units. I feel confident it was a conscientious review going into the Spring and Summer."
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 Foristell, 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
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+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 Foristell, 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 Go Time Plumbing Services
Go Time Plumbing Services
4.8(
46
)
Water Heater - Repair or Service

Serving Foristell, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Warranties offered

"Wonderful customer service! Came early on a Sunday to look at hot water heater. Replacement installed on Monday in a couple of hours tops. Will definitely be using again for all our future plumbing needs."
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 Foristell, 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
Jerry Kelly Heating, Air Conditioning, Plumbing & Electrical - P
New to Angi
Water Heater - Repair or Service

Serving Foristell, 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 Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
516
)
Water Heater - Repair or Service

Serving Foristell, MO and surrounding areas

In business since 1979

Free estimates

Emergency services offered

"Craig and Ethan did a nice job replacing a drain pipe today damaged by a water main break and causing a leak into the basement . They were knowledgeable, neat, and efficient. A very good hvac company provides relysbke plumbing service too!"
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+18

Response time12 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Vitt Heating & Air Conditioning Co Inc
Vitt Heating & Air Conditioning Co Inc
4.7(
161
)
Water Heater - Repair or Service

Serving Foristell, MO and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"It went well under the circumstances. I found out that day, that my water had been turned off without my knowledge by America Water, which made it impossible to hose down and clean the outdoors unit. They did their part so I was satisfied. It would have been outstanding if they were willing to come back out to complete the cleaning when water was turned back on, for a perhaps half the price ($49.99). They would only come back out for $89.99."
Military Discounts (retired & active)
Senior Citizen Discounts
Residential HVAC
Multifamily & Commercial Installation & Maintenance
Professionally Installed Ducts

+6

Response time3 days
Response rate100%
Recommended by91%of homeowners
Avatar for Mayo Plumbing Co
Mayo Plumbing Co
4.8(
481
)
Water Heater - Repair or Service

Serving Foristell, MO and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Great! I called Mayo as a new customer (my former plumber had retired). John called me after office hours from his cell phone before he had even returned to his office and had a chance to review my request; we discussed my situation and he said he would work me into his schedule. They kept in touch and updated expected arrival time. When John arrived, he was very personable, professional and efficient; he even leak-checked fittings for furnace and water heater, in addition to the new fitting he installed for the dryer. I like small family-owned businesses and would hire them again in a minute!"
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+3

Recommended by96%of homeowners
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FAQs for water heater repair or service projects in Foristell, 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 Foristell, 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.