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TRUSTED BY O FALLON, MO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon4.3k+
    Verified toilet services reviews

Top-Rated Toilet pros in O Fallon - Updated Nov 2026

Avatar for Ambassador Plumbing L.L.C
Ambassador Plumbing L.L.C
5.0(
40
)
Faucets, Fixtures and Pipes - Repair or ReplaceFaucets, Fixtures and Pipes - Repair or Replace - For Business

Serving O Fallon, MO and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Ambassador Plumbing was my first choice and the only one of three companies to respond to my request for a quote. Paul came within a couple of weeks and did a fine job of replacing my Mansfield toilet with their recommended Kohler one that met my specifications. I'm very pleased with not just the toilet but the work too. (Note: Ambassador does not honor the Angi 5% coupon displayed on their site.)"
Response time1 day
Response rate100%
Recommended by90%of homeowners
Avatar for Ducky Drains LLC
Ducky Drains LLC
5.0(
37
)
Faucets, Fixtures and Pipes - Repair or ReplaceDrain Clog or Blockage - Clear

Serving O Fallon, MO and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Michael made himself available to do a toilet replacement for me when another plumber was not able to come. He was very polite got the job done quickly and cleaned up after himself. I would highly recommend him"
Response time7 hrs
7 neighbors recently requested a quote
Avatar for KIRKWOOD PLUMBING INC
KIRKWOOD PLUMBING INC
4.3(
98
)
Drain Clog or Blockage - Clear

Serving O Fallon, MO and surrounding areas

Approved

In business since 1987

Emergency services offered

Warranties offered

"I scheduled a 2-4 pm appointment earlier this week for Kirkwood Plumbing to come out and fix a toilet. I called to verify this appointment earlier today and was informed they "should be able to come" for the service. At 355 today, I received a call that a plumber could not make it that they could "try again Monday after 3." I informed her that I had to take off work for this appointment and this very inconvenient. Although we've had a good experience with them in the past, this experience is very annoying. Is this normal for plumbing companies to not make 'appointments.'? Update: a plumber came on Monday afternoon and promptly and professionally fixed the problem.
"
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+3

2 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for On Time Experts
On Time Experts
4.8(
104
)
Faucets, Fixtures and Pipes - Repair or Replace

Serving O Fallon, 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 Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Faucets, Fixtures and Pipes - Repair or Replace

Serving O Fallon, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Very impressed with the professional appearance and demeanor of the installers. They initiated a series of pre install checks around the home that solved some issues and found a few problems that needed to be solved before they started. On top of going the extra mile, the install was successful and I'm a very satisfied customer. The manager was responsive and accommodating. Highly recommend Dunn One Hour Plumbing, Heating and Air Conditioning."
Additional Photos
Response time2 days
Recommended by89%of homeowners
Avatar for Winnovation Plumbing and Drain
Winnovation Plumbing and Drain
5.0(
7
)
Faucets, Fixtures and Pipes - Repair or ReplaceDrain Clog or Blockage - Clear

Serving O Fallon, 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
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Toilets FAQs, answered by experts

Yes, you should screw your flange to the subfloor, including cement. The best way to get this done is to predrill holes into the concrete using a hammer drill and a ¼-inch concrete bit. Be careful when you’re ready to bolt your flange down, as you can accidentally crack it. You can avoid this issue by not installing the screws too deep. Or, you can opt for a flange with a stainless steel ring so you don’t have to worry about cracking the plastic.

Replacing a toilet typically takes two to four hours. Several factors can impact this timeline, including the condition of the old toilet, flange, flooring, and pipes. If a professional discovers issues like a cracked flange, damaged flooring, leaky pipes, or a broken wax ring, the installation will take longer. Additionally, some toilets, such as wall-mounted or in-wall-tank models, are more complex to install and may require cutting into and repairing drywall, which adds to the project time. Given the weight of toilets and the importance of proper placement, it is often best to hire a professional for the job.

To test for toilet leaks, use water coloring in the water tank and see if the water slips into the bowl from the tank. This test will indicate if there’s a problem with the flapper or refill tube. You can also put water coloring in the bowl of the toilet to see if there is a leak there. If there is, you should see the colored water on the outside of the toilet bowl or on the floor. 

Some older homes have toilets in the basement to combat sewage backups. This type of toilet, also known as a Pittsburgh potty, acted as a safety valve over the incoming sewer line. If a line backed up, it would back up into the toilet because it was the lowest fixture in the home, keeping it out of sight and away from the finished areas of the house.

Basement toilets were also used by workers with messy jobs, like those who worked in coal mines or steel mills. This way, they could clean up and avoid tracking dirt through their home.

The order of your bathroom renovation should prevent damage to the completed work. Start with demolition and removing the old fixtures. Then, address structural repairs or water damage, if needed. Next, tackle the rough-in phase for plumbing and electrical work, install waterproofing, and work on wall treatments like tile or paint. Install your shower or bathtub, toilet, vanity, and sink. Flooring goes in after major fixtures but before the toilet. Lastly, install new lighting fixtures, mirrors, and other finishing touches as desired.

The O Fallon, MO homeowners’ guide to toilet services

From average costs to expert advice, get all the answers you need to get your job done.