How to install a bidet on a wall-mounted toilet
In-wall toilets hide the water connection, making it difficult to attach a hand-held bidet without cutting into your bathroom tile or nearby sink cabinets. While many units have a hidden water port, accessing it requires finding its exact location in the manual and cutting a hole in the wall to install a shut-off valve.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Getting a hose attachment from the basin faucetDid this help you?
- 2Cutting a hole in the cabinet or wall to run a supply lineDid this help you?
- 3Teeing into the toilet supply line if accessibleDid this help you?
- 4Getting a friend to help lift the heavy toilet.Did this help you?
- 5Setting the bowl first and adding the tank afterward instead of installing it fully assembled.Did this help you?
- 6Using a hair dryer to melt old wax off the flange to ensure a clean surface for the new ring.Did this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“First time replacing a toilet, and I’m hoping to get through this without flooding the house or needing to call in a professional to rescue me.”source ↗
“This thing weighs a ton! Any tricks to removing it without destroying my back or the bathroom?”source ↗
“Anything I should watch out for when removing the old wax seal and installing the new one?”source ↗
“Any rookie mistakes I should avoid?”source ↗
“Easiest DIY hack way would just be to cut a hole in the cabinet and run a long supply line tho lol.”source ↗
“A lot of these in wall toilets have a plugged water port installed near the water connection for bidet seat. Find the manufacturer installation instructions and get a measurement to the plug then cut a hole in tile and install shut off to supply hand held.”source ↗