How long does it take to replace a toilet? For most homeowners, the answer is somewhere between one and three hours when a licensed plumber handles the job. That said, a number of factors can make the process quicker or push it longer. Understanding what goes into a toilet replacement helps you plan accordingly and avoid any surprises on the day of service.
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What Affects the Timeline of a Toilet Replacement
No two toilet replacements are exactly the same. The condition of your bathroom, the type of toilet being installed, and whether any underlying issues are discovered along the way all play a role in how long the job takes.
The Type of Toilet Being Installed
Standard two-piece toilets are the most straightforward to install and typically take the least amount of time. One-piece toilets are heavier and can require more careful handling during installation. Wall-hung toilets involve working with in-wall carriers and tanks, which adds considerably more time to the project.
The Condition of the Existing Toilet and Connections
If the old toilet has corroded bolts, a damaged wax ring, or a deteriorated flange, the removal process takes longer than expected. A plumber will need to address any of these issues before the new toilet can be properly set. Skipping this step risks leaks and instability down the road.
Whether the Flooring or Flange Needs Repair
Sometimes removing an old toilet reveals a damaged flange or soft subfloor underneath. These are problems that need to be corrected before installation moves forward. Toilet repairs like these add time to the overall project but are essential for a long-lasting result.
Water Supply Line Access and Condition
Older homes sometimes have shutoff valves that are difficult to operate or water supply lines that need to be replaced. If a plumber needs to address these issues, it adds a bit of time to the job.
A General Timeline: What to Expect Step by Step
While every situation is different, here is a general breakdown of how a professional toilet replacement typically unfolds.
Shutting Off the Water and Removing the Old Toilet
- The water supply to the toilet is shut off and the tank and bowl are fully flushed and emptied
- The supply line is disconnected from the shutoff valve
- The toilet is unbolted from the floor and carefully removed in one or two pieces depending on the model
- The old wax ring is scraped away and the flange is inspected for damage
This portion of the job generally takes between 20 and 45 minutes depending on the age and condition of the existing toilet.
Preparing the Area for the New Toilet
Before the new toilet goes in, the plumber will clean the flange area, check that the floor is level, and install a new wax ring or wax-free seal. If the flange needs to be repaired or raised, that work happens here. This step typically takes 15 to 30 minutes.
Installing the New Toilet
- New closet bolts are set in the flange
- The new toilet bowl is carefully positioned and pressed down onto the wax ring
- The bowl is bolted to the floor and checked for stability
- The tank is attached to the bowl and secured
- The supply line is connected and the water is turned back on
- The toilet is tested for proper flushing and checked thoroughly for leaks
Installation of the new toilet generally takes 30 minutes to an hour depending on the model and any adjustments needed.
Final Inspection and Cleanup
A thorough plumber will run multiple flush cycles, check all connection points for leaks, and make sure the toilet is properly caulked at the base if applicable. This final check takes an additional 10 to 15 minutes and is an important step that should never be rushed.
How Long Does It Take to Replace a Toilet on Your Own?
DIY toilet replacement is a popular weekend project, but homeowners should plan for more time than a professional would need. Without the tools, experience, and familiarity with common complications, a DIY replacement can take anywhere from two to four hours or longer. Running into a corroded bolt, a cracked flange, or a misaligned rough-in measurement can quickly turn a simple project into a half-day ordeal.
Hiring a licensed plumber is generally the smarter investment for most homeowners. Beyond saving time, professional installation helps ensure the job is done correctly the first time, which protects against future leaks, water damage, and costly repairs.
Signs It May Be Time to Replace Your Toilet
Not sure whether your toilet needs to be replaced or simply repaired? Here are a few signs replacement is likely the better option:
- The toilet requires frequent repairs or is constantly running
- There are visible cracks in the porcelain bowl or tank
- The toilet wobbles and cannot be stabilized by tightening the bolts
- You are dealing with persistent clogs that are not related to the drain line
- Your toilet is an older model using 3.5 gallons or more per flush and you want to upgrade to a water-efficient model
Is your toilet running? Learn if it can be repaired or if a replacement is necessary here: How to Repair A Running Toilet
Get Your Toilet Replaced by the Pros
At Plumbing Pros, we are a family-owned and operated plumbing company with over 20 years of experience serving Downers Grove and the greater Chicagoland area. Our OSHA-certified plumbers handle toilet replacements efficiently and correctly, from removal to final inspection. We back every job with a one-year workmanship warranty so you can have confidence in the work long after we leave.
We offer financing through Wisetack for qualifying customers, and we are proud to offer 10% off labor for military members, first responders, and teachers. For plumbing emergencies, we are available 24/7.
