Project Guide

How to Install a Bidet

1
Before Installing a Bidet
A person stops the flow of water to a toilet from the wall shut-off valve.

Installing a bidet toilet seat or bidet sprayer is one of the easiest ways to add the cleaning function of a bidet to a bathroom with a limited size or a home with a limited budget for plumbing renovations. 

  • Determine whether you prefer a bidet seat or sprayer and choose one that suits your bathroom and fits your toilet bowl. 
  • Before bidet installation, use the shutoff valve to turn off the water to the toilet. 
  • Flush the toilet until the tank is empty. 


Tip: Installing a bidet product will involve detaching the water supply hose, so have a towel or small bucket ready to catch any water remaining in the tank or hose. 

2
How to Install a Bidet Seat
A person attaches a bidet seat mounting plate to the rim of a toilet.

A bidet seat contains the equipment built in and will replace your current toilet seat. 

  • Using a wrench if needed, remove the existing seat from your toilet. Recycle the old seat and any parts, if this is an option in your area. Clean the rim. 
  • Attach the bidet seat mounting plate (also called the catch plate) by aligning it over the bolt holes and inserting the brackets. Insert and tighten the mounting bolts. 
  • Slide the bidet seat onto the mounting plate, adjusting the placement as needed. The seat should have a release button you can press to remove it from the mounting plate. 


3
How to Hook Up a Bidet Seat
A person hooks up the water supply hose to the back of a bidet toilet seat.
  • Detach the toilet’s flexible water supply hose from the base of the toilet tank. 
  • Attach the bidet t-valve to the base of the tank. 
  • Attach the water supply hose to the lower connection of the t-valve. 
  • Attach one end of the bidet’s supply hose to the upper connection of the t-valve. 
  • Attach the free end of the bidet hose to the bidet seat. Make sure all connections are secure. 
  • Use the shutoff valve to turn on the water. Check for leaks and test the bidet. 


Tip: Some bidets seats have fittings for separate cold and hot lines if you’d like the option of warm water.

4
How to Install a Hand-Held Bidet Sprayer
A person attaches a hand-held bidet valve to the base of a toilet tank.

A handheld bidet sprayer provides a supplement to your toilet and can be hung on the tank itself or on a nearby wall. Many of the installation steps are similar to installing a bidet seat.

  • Before installation, determine which side of the toilet is most convenient for the sprayer. 
  • Detach the toilet’s flexible water supply hose from the base of the toilet tank. 
  • Attach the bidet t-valve to the base of the tank. 
  • Attach the water supply hose to the lower connection of the t-valve. 
  • Attach one end of the sprayer hose to the upper connection of the t-valve. 
  • Screw the sprayer head and any necessary extensions to the free end of the sprayer hose. 
  • Place the holster clip on the edge of the tank, or screw the holster mount onto the wall. 
  • Turn on the water and test the bidet sprayer. 


Tip: Handheld sprayers usually have separate switches for turning on the water and activating the sprayer. Make sure both are in the “Off” position when first activating the unit to avoid uncontrolled bidet spray.

5
How to Install a Freestanding Bidet
A person installs a freestanding bidet to wall-mounted plumbing fixtures.

Freestanding bidets are about the size of a toilet and may not fit as additions to bathrooms or water closets if space is limited. Do not plan to add one unless your bathroom already has a bidet trap and other appropriate plumbing. If you want to add a standard bidet as part of a renovation, professional installation is highly recommended. 

  • If your bathroom is equipped with correct plumbing, installing a bidet is comparable to replacing a toilet. 
  • Begin assembling the bidet by attaching the drain fittings and the faucet. Follow all instructions in the owner's manual. 
  • Align the bidet over the drain and water supply lines. Use a pencil or tape to mark the shape of the bidet and the placement of the hold-down bolts. 
  • Drill pilot holes for the hold-down bolts with a power drill.
  • Reposition the bidet and attach the bolts. Place caps over the heads of the bolts. 
  • Place caps over the heads of the bolts. 
  • Use a measuring level to confirm that the bidet is not at an angle.
  • Apply silicone sealant around the base of the bidet, as you would do when installing a toilet. 
  • Connect the water supply, shut-off valve and drain. 
  • Open the valve to turn on the water and test the bidet for proper function and leaks. 

A bidet attachment such as a bidet seat or hand-held sprayer is easy to install and provides a good option to a standard bidet. Using bidets can be a refreshing part of one's regular hygiene regimen and potentially save on toilet paper.