How Long Does It Take to Install a Bidet?

Quick Answer

Installing a bidet takes 30 minutes–2 hours depending on the type. A simple bidet seat attachment or toilet-mounted sprayer is a straightforward DIY project that takes 30–45 minutes. A standalone bidet unit or bidet toilet combo requires more involved plumbing and typically takes 1–2 hours, often with professional help.

Installation Time by Bidet Type

Bidet Type	Difficulty	Time	DIY Friendly?	Typical Cost
Non-electric seat attachment	Easy	15–30 min	Yes	$30–$80
Electric bidet seat (e.g., Toto Washlet)	Easy–Moderate	30–45 min	Yes	$250–$800
Handheld sprayer	Easy	20–30 min	Yes	$25–$60
Bidet toilet combo	Moderate	1–2 hours	Somewhat	$400–$2,000
Standalone bidet fixture	Hard	3–5 hours	No	$500–$1,500+

Non-Electric Bidet Seat Attachment (15–30 Minutes)

This is the most common type and easiest to install. No electrical work is required.

1. Turn off the water supply valve behind the toilet (1 minute)
2. Remove the existing toilet seat by unscrewing the mounting bolts (2–3 minutes)
3. Place the bidet attachment plate on the toilet bowl rim and align the bolt holes (2 minutes)
4. Reattach the toilet seat on top of the bidet plate and tighten the bolts (3 minutes)
5. Connect the T-valve adapter to the toilet's water supply line (5–10 minutes)
6. Attach the bidet hose from the T-valve to the bidet unit (3 minutes)
7. Turn the water back on and check for leaks (2–3 minutes)

Electric Bidet Seat (30–45 Minutes)

Electric models like the Toto Washlet or BioBidet add heated water, air drying, and other features. The main additional requirement is access to a GFCI electrical outlet near the toilet.

• If an outlet exists nearby: Installation takes 30–45 minutes and follows the same steps as above, plus plugging in the unit
• If no outlet exists: An electrician will need to install a GFCI outlet, adding 1–2 hours and $150–$300 to the project

Handheld Bidet Sprayer (20–30 Minutes)

A handheld sprayer mounts to the side of the toilet or wall and connects to the existing water supply. Installation requires only a wrench and thread seal tape.

1. Shut off the water supply and flush the toilet
2. Disconnect the water supply line from the fill valve
3. Attach the T-valve adapter between the supply line and fill valve
4. Connect the sprayer hose to the T-valve
5. Mount the sprayer holster to the wall or toilet tank
6. Restore water and test for leaks

Standalone Bidet Fixture (3–5 Hours)

A standalone bidet is a separate plumbing fixture installed next to the toilet. This is the most involved option and typically requires a licensed plumber.

• Requires its own hot and cold water supply lines
• Needs a separate drain connection
• May require opening walls to run new plumbing
• Permit requirements vary by local building codes
• Professional installation is strongly recommended

Common Issues That Add Time

Issue	Added Time	Solution
Corroded supply valve	15–30 min	Replace the shutoff valve
No nearby electrical outlet	1–2 hours	Hire an electrician for GFCI outlet
Non-standard toilet bolt spacing	10–20 min	Use adapter kit or different mounting hardware
Leaking T-valve connection	10–15 min	Reapply thread seal tape, tighten fittings
Toilet seat compatibility	10–15 min	Check round vs. elongated seat before purchase

Tools Needed

Most bidet installations require only basic tools: an adjustable wrench, a flat-head screwdriver, thread seal tape (Teflon tape), and a towel to catch residual water. Electric models additionally need access to a GFCI-protected outlet within reach of the power cord, which is typically 3–4 feet long.