A basic attachment
or a plug-in bidet seat?
Start with the bathroom you have. The toilet shape and available power can rule out a model before the feature list does.

Two different purchases
A non-electric attachment normally sits under the existing toilet seat and uses water pressure. It does not plug into a socket. A basic cold-water model uses the incoming supply temperature; some other non-electric models connect to a separate hot-water supply. Check the exact design rather than assuming that “non-electric” always means the same plumbing.
An electric bidet seat replaces the seat. Depending on the model, it can add heated water, a heated seat, and a dryer. Those features need a suitable electrical supply as well as a water connection. Follow the manufacturer’s installation instructions and local requirements; if suitable power is missing, include the cost of getting it installed before choosing a seat.
| Question | Basic non-electric attachment | Electric seat |
|---|---|---|
| Do I need power? | No plug for the attachment. | Yes; verify the model’s supply and outlet requirements. |
| Does the existing seat stay? | Usually. Check hinge and seat clearance. | The new unit replaces it. |
| Will the water be warm? | Cold-only models use the supply temperature. Other models may need a hot-water connection. | Check the heater type and controls on the exact model. |
| What should I measure? | Mounting holes, seat clearance, and accessible plumbing. | Bowl shape, mounting-hole position, tank clearance, and reach of the cord and hose. |
Two examples to look up
LUXE Bidet NEO 120
A simple cold-water attachment with a pressure control and a single wash nozzle. It is an example of the less involved option when you want a basic water wash.
Product details & fitting information ↗TOTO WASHLET S2
An elongated electric seat with adjustable warm water, a heated seat, and a warm-air dryer. Check that the elongated version fits your toilet and that the installation requirements can be met.
Product details & installation manual ↗Look under the seat before spending anything
Photograph the toilet from above and from the side. Note whether the bowl is round or elongated, where the water shutoff sits, and whether the seat bolts are accessible. Some toilets conceal the fittings or have shapes that limit compatibility. Use the product’s fitting guide with those measurements.
Allow time to check for leaks according to the instructions after installation. If the water connection or electrical requirements are unclear, ask a qualified installer. This page is a buying comparison, not an installation manual.