Do Bidets Use Electricity? Power Needs for Every Type Explained

If you're considering a bidet, one of the first practical questions is: does it need to be plugged in? The answer depends entirely on which type you choose, and the difference matters for installation, monthly cost, and which products are even compatible with your bathroom.

Here's the full breakdown.

Which Bidets Use Electricity?

There are four main bidet types. Two need power, two don't.

Need Electricity

• Electric bidet seats — All the major models from TOTO, Brondell, BioBidet, Kohler, and Coway. These have heated seats, warm water tanks or instant heaters, dryers, deodorizers, and remote controls.
• Integrated smart toilets — Units like the TOTO Neorest NX1 that combine a toilet and bidet seat into a single unit. These are essentially electric bidet seats with extra features (auto-flush, auto-open lid, motion sensors).

Don't Need Electricity

• Non-electric bidet attachments — Models like the TUSHY Classic 3.0, BioBidet SlimEdge, and Luxe Bidet Neo 185. They mount under your existing toilet seat and use water pressure alone.
• Handheld bidet sprayers — The hose-and-trigger style sprayer that connects to your water supply via a T-valve. Pure water pressure, no power.
• Standalone porcelain bidets — The traditional European fixture. Like a sink, it only needs hot and cold water lines.
• Portable / travel bidets — Battery-operated portable bidets use rechargeable batteries, so they technically use electricity but not from your wall. They're charged via USB before each trip.

How Much Power Does an Electric Bidet Use?

Three numbers matter: peak draw (max watts during heating), monthly energy use (kWh), and monthly cost.

Peak watts only matter for circuit sizing — electric seats don't draw peak power continuously. They heat the seat and water tank in short bursts when needed.

Monthly cost assumes the US average of $0.15 per kWh. Your actual cost depends on your local rate, which can range from $0.08 (Idaho, Washington) to $0.30+ (California, Hawaii).

What Uses the Most Power on an Electric Bidet Seat?

In order from highest to lowest:

1. Warm water heater — The biggest energy user, especially on cold-water-tank models. Hybrid heaters (like the Brondell Swash 1400) use slightly less because they don't keep a full tank warm 24/7.
2. Warm air dryer — Runs only during the dry cycle but draws 200-400 watts when active.
3. Heated seat — Modest draw (50-100 watts) but runs whenever the seat is in heat mode.
4. Deodorizer fan — Tiny draw (a few watts).
5. Standby electronics — 1-5 watts continuous on most models. Some draw more if Wi-Fi or smart features are active.

If you want to minimize power use without going non-electric, switch off the heated seat in summer, lower the water temperature one notch, and use the dryer sparingly.

Eco Mode: Worth Enabling?

Most TOTO and Brondell electric seats include an "eco mode" or "auto power save" setting that lowers seat and water temperatures during typical low-use hours (overnight, while you're at work). It can cut monthly energy use by 20 to 40 percent.

The only downside: the seat or water may take a few extra seconds to reach full temperature when you first use it in the morning. Most users don't notice.

Always enable eco mode unless you have a specific reason not to.

What Kind of Outlet Do You Need?

US electrical codes require GFCI (ground fault circuit interrupter) outlets in bathrooms because of the risk of water exposure. An electric bidet seat must plug into a GFCI outlet within reach of the toilet — typically within 4 feet.

If your bathroom doesn't have a GFCI outlet near the toilet, you have three options:

1. Hire an electrician. Adding a GFCI outlet costs $150 to $300 depending on access and wiring complexity. Cleanest long-term solution.
2. Convert an existing outlet to GFCI. If there's already a regular outlet within reach, an electrician can swap it for a GFCI receptacle for $50 to $100.
3. Go non-electric. A great option for renters or anyone who doesn't want to deal with electrical work. See our best bidet for renters roundup for picks that need only a water connection.

Will an Electric Bidet Trip My Bathroom Circuit?

Usually no. Standard US bathroom circuits are 15-amp or 20-amp. An electric bidet seat at peak draw is 3-12 amps. Plenty of headroom.

The exception is older homes (pre-1980) where the bathroom may share a circuit with a hallway, bedroom, or kitchen. If you're running a 1,500-watt hairdryer while someone else uses the bidet's warm air dryer, you could exceed the circuit's capacity.

If you notice the breaker tripping, the fix is either:

• Run high-draw devices one at a time.
• Have an electrician add a dedicated 20-amp circuit for the bathroom (typically $400 to $800).

What About Power Outages?

Electric bidet seats lose all features during a power outage — no warm water, no dryer, no nozzle movement. Most models include a manual override lever on the side that lets you do a basic cold-water rear wash mechanically. Check the manual for the specific procedure on your model.

Non-electric attachments are unaffected by power outages. If reliability during outages matters (storm-prone areas, off-grid living), the non-electric option is worth considering.

Do Bidets Need Hot Water Plumbing?

Electric seats have an internal heater, so they only need a cold water line. The unit heats the water itself.

Non-electric attachments come in two flavors:

• Cold-water only — Connect to the cold supply line of your toilet. Most attachments are this type (TUSHY Classic, BioBidet SlimEdge, Luxe Bidet Neo 185).
• Dual-temperature — Connect to both the cold toilet line and a hot line teed off your sink. Models like the TUSHY Spa 3.0 do this. Installation is slightly more complex.

If you want warm water without electricity, dual-temperature attachments are the answer. They're a niche option but they work well.

So Which Should You Buy?

If you have a GFCI outlet near the toilet and want maximum comfort, an electric seat is the way to go. The TOTO Washlet C5 and Brondell Swash 1400 cover the mid- and upper-mid-range respectively, and both deliver excellent value over a 10+ year lifespan. For deeper picks, see our best electric bidet seats roundup.

If you don't have an outlet, are renting, or want zero monthly cost, a non-electric attachment delivers 80% of the bidet experience for 5 to 10% of the price. See our best budget bidet attachments for picks that handle daily use without any electrical work.

And if you're still on the fence between the two, our how to choose a bidet buying guide walks through every tradeoff in detail.

The Bottom Line

Most bidets sold in the US today don't use electricity at all. Of the ones that do, the monthly cost is trivial — well under the cost of a single roll of toilet paper, every month. Power is a real consideration for installation (you need a GFCI outlet), but not a meaningful one for your utility bill.

The bigger question isn't whether bidets use electricity — it's whether you want the comfort features that electricity enables. That's a personal call, not a financial or environmental one.