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

Avatar for Ambassador Plumbing L.L.C
Ambassador Plumbing L.L.C
5.0(
40
)
Tankless Water Heater - Repair

Serving West-alton, 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 Mr. Rooter Plumbing of St. Charles
Mr. Rooter Plumbing of St. Charles
4.2(
340
)
Tankless Water Heater - Repair

Serving West-alton, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"The technician was honest and said that the water heater is in good working condition not needing any repairs or replacement We were told the opposite by another company!!! They have indicated that it needs replacement!!"
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
)
Tankless Water Heater - Repair

Serving West-alton, 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

16 neighbors recently requested a quote
Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
516
)
Tankless Water Heater - Repair

Serving West-alton, MO and surrounding areas

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 time12 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Mayo Plumbing Co
Mayo Plumbing Co
4.8(
481
)
Tankless Water Heater - Repair

Serving West-alton, MO and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Mayo plumbing is amazing! We called John for a leak from our main water line in our basement. He rearranged his schedule to fit us in & didn’t leave until the job was done. He was able to fix the leak with a less invasive method than what another plumbing company we had already contacted quoted us. Many thanks to John! If we ever need plumbing work again, he will be our only call!"
Additional Photos
Additional Photos
1
2
3

+3

Recommended by96%of homeowners
Avatar for Vitt Heating & Air Conditioning Co Inc
Vitt Heating & Air Conditioning Co Inc
4.7(
161
)
Tankless Water Heater - Repair

Serving West-alton, MO and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"The service provider appropriately diagnosed the problem timely and offered acceptable repair options. The company was extremely responsive with the initial service call as well as with the follow-up repair. I would definitely recommend their services to others."
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 Tri-State Water, Power & Air
Tri-State Water, Power & Air
4.8(
37
)
Tankless Water Heater - Repair

Serving West-alton, MO and surrounding areas

In business since 1993

Free estimates

Small jobs welcome

"I had to shut off the water to my house so I needed fast service. Within about a two hour time frame they arrived, took care of my issue and I was able to turn my water back on!"
Gas Water Heater
Short Water Heater
Gas Water Heater
Electric Water Heater
Under Sink

+3

Response time7 hrs
Response rate97%
Recommended by97%of homeowners
Avatar for BURKE PLUMBING CO
BURKE PLUMBING CO
4.8(
153
)
Tankless Water Heater - Repair

Serving West-alton, MO and surrounding areas

In business since 1929

Emergency services offered

"Had Nick Rattini as our technician - great job overall. I wanted to replace our Rheem 40 gallon water heater with a Rheem 50 gallon water heater and Burke Plumbing will let you use customer supplied appliances - up front charge was $640 which is competitive, my assumption is that price includes an extra $100 for using a customer supplied heater. They added another $100 for modifying the existing plumbing to accommodate the larger tank which, in my mind, was reasonable. They showed up on time and the installation took about 2 hours. I had hot water one hour later. All in all, very pleased with the experience from Burke Plumbing which has been around since the 1930s."
Recommended by98%of homeowners
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