How to Install a Bidet

What You'll Need

• Adjustable wrench or pliers
• Towel (for any residual water)
• Your bidet seat or attachment kit (includes T-valve and hose)
• PTFE/Teflon tape (usually included)

Step 1: Turn Off the Water

Locate the shut-off valve behind your toilet — it's the knob on the wall or floor where the water supply line connects. Turn it clockwise until it stops. Flush the toilet to drain remaining water from the tank.

Step 2: Disconnect the Supply Line

Place a towel underneath the connection point. Using your wrench, unscrew the water supply hose from the bottom of the toilet tank. A small amount of water may drip out — that's normal.

Step 3: Install the T-Valve

The T-valve (or T-adapter) is the key piece. It splits the water supply so it feeds both your toilet tank and the bidet. Wrap PTFE tape around the threads, then screw the T-valve onto the fill valve at the bottom of the tank. Reconnect the existing supply hose to one end of the T-valve.

Step 4: Mount the Bidet

For bidet attachments: Remove the toilet seat, place the bidet mounting plate over the bolt holes, and reattach the seat on top of it. Tighten the bolts.

For bidet seats: Remove the existing toilet seat entirely. Slide the bidet seat's mounting bracket onto the bolt holes and secure it. Click the bidet seat onto the bracket.

Step 5: Connect the Bidet Hose

Run the bidet's water hose from the unit to the open port on the T-valve. Hand-tighten first, then snug it with a wrench. Don't overtighten — just firm enough to prevent leaks.

Step 6: Turn the Water Back On

Slowly turn the shut-off valve counter-clockwise to restore water. Check every connection point for leaks. If you see any drips, tighten that connection a quarter turn. Let the tank fill completely, then test the bidet.

Electric Bidet Seats

If you're installing an electric bidet seat (with heated water, air dryer, etc.), you'll also need a GFCI outlet within reach of the toilet. Most bathrooms already have one. If yours doesn't, you'll want an electrician for that part. Never use an extension cord.

Already Have a Telephone Shower?

If you're in the Philippines, chances are your bathroom already has a handheld sprayer (telephone shower) mounted on the wall. These connect to the water supply in a similar way — using a T-valve off the toilet's fill line or directly from a wall valve.

Upgrading from a basic sprayer to a bidet seat is straightforward. You can keep the sprayer mounted and add a bidet seat — or replace the sprayer entirely. Bidet seats and attachments are available at Ace Hardware, Wilcon Depot, and online through Shopee and Lazada. Prices for attachments start around ₱1,500–₱3,000, while electric seats range from ₱8,000 to ₱30,000+.