Toilet installation in Knoxville, TN takes one visit: the old toilet comes out, the flange and subfloor are checked and repaired if needed, the new toilet is set on a fresh wax or foam seal, and a new supply line and shutoff are connected. The tank is adjusted and flushed several times before we leave.
Updated October 2026
Choosing the Right Toilet for the Room
The first measurement is the rough-in, the distance from the wall to the center of the drain, most often 12 inches but sometimes 10 or 14 in older homes. Buy the wrong one and it leaves a gap or won't fit. Height comes next: comfort height bowls sit closer to chair height, easier for most adults and anyone with knee trouble.
Kohler and Delta both make dependable toilets across price ranges, and bidet seats from makers including Moen fit most elongated bowls. We install what you choose, or help you pick one that fits the rough-in. If the old toilet is sound and only leaking, toilet repair may be all it needs.
What Changes the Price of a Toilet Install
The toilet you choose is the biggest variable; the floor underneath is the next.
Models range widely in price and features.
A repair ring or new flange adds parts and time.
Rotted floor around the drain has to be repaired first.
A new shutoff and braided line are fitted.
Removing and disposing of the old toilet.
Gravity Flush, Pressure-Assist or Dual Flush
Flush type matters more to daily use than the look of the bowl.
| Type | How it flushes | Noise | Best for |
|---|---|---|---|
| Gravity | Tank water drops into the bowl | Quiet | Most homes |
| Pressure-assist | A pressurized tank pushes the water | Loud | Busy bathrooms, light commercial |
| Dual flush | Two buttons, light or full flush | Quiet | Saving water |
Comfort Height Toilet Swap
Comfort height, or chair height, toilets put the seat closer to the height of a dining chair than a standard bowl does, which makes sitting and standing easier. The swap itself is the same as any toilet: remove the old one, clean the flange, set the new one on a fresh seal and connect the supply. What changes is the room. A taller bowl can sit awkwardly beside a vanity or under a low window, so we check clearances first, and a narrow bathroom may suit a compact elongated bowl better than a full-size one.
Flange Repair Before Setting
The flange is the ring that anchors the toilet to the drain, and a new toilet cannot fix a bad one. Cracked plastic, a rusted cast iron ring, a broken bolt slot or a flange sitting below the finished floor all lead to rocking and leaks. We repair it with a repair ring or spacer, or replace it where the drain allows, and check the subfloor around it for rot from old leaks. Setting a new toilet on a failed flange is the most common reason a new install starts leaking within a year.
Bidet Seat Wiring and Supply
Most bidet seats replace the toilet seat and take water from a tee fitted at the toilet's supply valve, so the toilet and bidet share one shutoff. Electric bidet seats that warm the water and the seat also need a grounded outlet near the toilet, ideally GFCI protected, which an electrician adds if none is there. Non-electric seats need only the water tee. We fit the tee, a new braided supply line and the seat, then check both connections for leaks after several cycles.
A New Toilet and a KUB Water Bill
How a Toilet Install Runs
- 1
Measure
Rough-in and clearances checked.
- 2
Remove
Old toilet drained, unbolted and lifted.
- 3
Check the flange
Flange and subfloor inspected, repaired if needed.
- 4
Set
New seal, toilet set level, bolts snugged evenly.
- 5
Connect and test
New supply line, tank adjusted, several flushes.
Toilet Installation Questions From Knoxville Homeowners
What rough-in do I need?
Measure from the wall to the center of the floor bolts; 12 inches is most common.
Round or elongated bowl?
Elongated is more comfortable; round saves space in small bathrooms.
Wax ring or wax-free seal?
Both work on a sound flange. Wax-free seals are easier to reposition.
Will a new toilet fix a rocking floor?
No. The flange and subfloor have to be solid first.
Do you take the old toilet away?
Yes, removal and disposal are part of the install.
Do bidet seats need electricity?
Only heated electric models, which need a grounded outlet near the toilet.
Other Kitchen & Bath Jobs We Handle
Outdoor Faucet & Hose Bib Repair
Frost-free sillcock and split hose bib after a freeze.
Outdoor Faucet & Hose Bib Repair detailsBathtub & Shower Installation
Tub to shower conversion and walk-in shower base.
More on bathtub & shower installationIce Maker & Fridge Water Line
New refrigerator water line and leaking ice maker line.
Ice Maker & Fridge Water Line overviewReady for a new toilet?
Call to have it set level on a sound flange and tested.