Whether you're upgrading from an old water-wasting toilet, replacing a cracked unit, or installing in a bathroom remodel, STL Plumbing Pros handles the complete installation — old toilet removed, flange inspected, new toilet set with a fresh wax ring and supply line. If your toilet just needs a fix, check our toilet repair service first. We supply and install, or install customer-purchased toilets.
When to Replace Your Toilet
Cracked bowl or tank — a crack will only get worse and risks a flood.
Old 3.5+ GPF toilet — upgrading to 1.28 GPF saves thousands of gallons per year.
Constant repairs — when the repair costs keep adding up, replacement is smarter.
Bathroom remodel — new toilet completes the updated look and improves efficiency.
Comfort upgrade — switching to comfort-height or elongated bowl.
Our Process
Remove Old Toilet
Shut off water, disconnect, remove old toilet, inspect the closet flange for damage. Replace the flange if needed.
Install New Toilet
Set new wax ring, position toilet, secure with new closet bolts, connect new supply line. Level and stabilize.
Test & Clean Up
Multiple flush tests, leak check at every connection, caulk the base, and haul away the old toilet.
What Does Toilet Installation Cost?
| Service | Price Range | Details |
|---|---|---|
| Standard Toilet Installation | $250–$450 | Install your toilet or one we supply |
| Low-Flow / Dual-Flush Toilet | $350–$550 | Water-saving models installed |
| Old Toilet Removal | Included | We haul away the old unit |
| Flange Repair (if needed) | $100–$200 | Repair or replace damaged flange |
* Prices are estimates. We provide exact pricing after diagnosis. No hidden fees.
What Our Customers Say
"Replaced two old toilets with water-saving models. Clean installation, old ones hauled away. Water bill dropped noticeably."
"Bathroom remodel needed a new toilet. They recommended a great model, installed it perfectly. Looks and works great."
"Cracked toilet tank — they came next day with a new toilet and installed it. Professional from start to finish."