Smart Toilet vs Bidet Seat: Which Upgrade Suits Your Bathroom?

We compare the toilet seat with built in bidet against a full smart toilet to help you choose the right upgrade for your bathroom.

Updated 9 Sep 2026 4 min read 7 sections

In the smart toilet vs bidet seat choice, a bidet seat is the cheaper, quicker upgrade: it replaces only your toilet seat and adds warm water washing and usually a heated seat, while you keep your bowl and plumbing. A smart toilet replaces the whole toilet with one unit that builds those features in, often adding automatic flushing and lid opening and a cleaner look, but it costs more and takes more work to install. Renters and anyone on a budget usually do best with a seat. People already remodeling a bathroom are the ones who get the most from a full smart toilet.

What is a toilet seat with built in bidet?

A toilet seat with built in bidet swaps out your current seat and bolts on through the same holes. A T-adapter connects it to the water line that feeds your toilet tank, and electric models plug into a nearby outlet. Typical features include a wash wand with adjustable water temperature and pressure, rear and front wash modes, a heated seat, and on some models a warm air dryer and a night light.

Most people with basic DIY skills can fit one themselves, since no bowl replacement or new plumbing is needed. Non-electric bidet seats also exist. They cost less and need no outlet, but they usually wash with cold water only and have no heated seat.

What is a full smart toilet?

Bazyths smart toilet lineup showcasing high-tech bathroom fixtures — Smart toilets$799.00Image from the merchant

A smart toilet replaces the bowl, tank and seat with one integrated unit. The bidet functions, heated seat, dryer and often a deodorizer are part of the toilet itself. Many models also offer touchless or automatic flushing, an automatic lid, a remote control and a self-cleaning wand. Bazyths sells several smart toilets in this style, including models with a heated seat for colder bathrooms.

Because everything is built in, there is no side panel or loose hose, and the toilet looks like one piece. The trade-off is installation. You remove the old toilet, check that the new unit matches your rough-in (the distance from the wall to the center of the drain), and provide a grounded, GFCI-protected outlet near the toilet. Many buyers hire a plumber, and an electrician if there is no outlet.

Smart toilet vs bidet seat: key differences

Feature	Bidet seat (add-on)	Full smart toilet
Upfront cost	Lower	Higher
Installation	Often DIY	Often a plumber, sometimes an electrician
Replaces the bowl	No	Yes
Heated seat	On most electric models	Common
Warm water wash	On electric models	Common
Warm air dryer	On some models	Common
Automatic flush	No, you keep the flush handle	On many models
Look	Side panel or remote, visible cord and hose	One piece, fewer visible parts
Power	Outlet near the toilet (electric models)	Outlet near the toilet

Bidet seat advantages

Lower cost. You get washing and often a heated seat without buying a new toilet.
Simple install. No plumbing changes beyond the T-adapter.
Portable. If you move, you can take the seat with you and refit the old one.
Wide fit. Seats come in round and elongated sizes to suit most standard bowls.

Smart toilet advantages

Integrated design. No exposed hoses or side panels.
More automation. Automatic lid, flush, night light and self-cleaning are common.
Built as one unit. The wash, dryer and bowl are designed to work together.
A fresh bowl. Useful if your old toilet flushes poorly or needs replacing anyway.

Who should choose a bidet seat upgrade?

A toilet seat with built in bidet makes the most sense if:

You rent. A seat can be removed and the original put back when you leave.
You are on a budget. You get most of the daily comfort for much less.
Your toilet is in good shape. There is no reason to replace a bowl that works well.
You want to try a bidet first. A seat is a low commitment way to see if you like it.

Check your bowl shape (round or elongated) and the space behind the seat for the hose and cord before you order.

Who should choose a full smart toilet?

A full smart toilet suits you better if:

You are remodeling. If the toilet is coming out anyway, the extra work is small.
Looks matter. You want a clean, one-piece design with nothing added on.
You want the most features. Automatic flush and lid, dryer and self-cleaning in one unit.
The wiring is ready. A GFCI outlet near the toilet makes the install much simpler.

Bazyths modern vessel sink and vanity set for a sleek bathroom — Modern vessel sink and vanity$62.99Image from the merchant

If you are redoing the whole room, Bazyths also sells a modern vessel sink and vanity that can sit alongside a new toilet.

What Bazyths offers

Bazyths focuses on smart toilets. Its range includes the Bazyths smart toilet and a smart toilet with a built in bidet sold as a family model. Before you buy, check each listing for the rough-in size, bowl shape, power needs and which features (dryer, automatic flush, heated seat) are included, as these vary between models. For savings on your order, see the current Bazyths discount code.

Our verdict: pick the upgrade that fits your situation

There is no single winner. For most people, we suggest starting with a bidet seat: it covers the daily comfort features at a lower cost, installs quickly, and can move with you. If you are renovating, have an outlet in place and want the cleanest look with the most automation, a full smart toilet is the better choice. For a wider look at seat models from other brands, Bidet Blog has a guide to the best toilet seats with built-in bidet that you can read alongside this comparison.

Questions

Smart toilet vs bidet seat: which is better for a small budget?

A bidet seat. It replaces only the seat, keeps your existing toilet and usually installs without a plumber.

Can I install a toilet seat with built in bidet myself?

Usually, yes. It bolts on through the same holes as your current seat, connects to the toilet water line with a T-adapter, and plugs into a nearby outlet if it is electric. Follow the maker's instructions.

Do I need an electrical outlet near the toilet?

For a heated seat, warm water or a smart toilet, yes, a grounded outlet within reach. If you do not have one, an electrician can add it, or you can choose a non-electric seat that uses cold water.

Will a bidet seat fit any toilet?

Most come in round and elongated sizes for standard bowls. Check your bowl shape and the space around the tank before ordering. Some one-piece toilets with unusual shapes are harder to fit.

Is a bidet seat with a dryer worth the extra money?

It depends on how you use it. A warm air dryer can cut down on toilet paper, but it adds cost and dries slower than a towel or paper. It is a nice extra rather than a must.