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Bidet attachment vs bidet toilet
A bidet attachment is a thin add-on that slides under the seat of the toilet you already have: about $30 to $100, no power for the basic ones, on in 10 to 15 minutes. A bidet toilet replaces the whole toilet with one that has the bidet built in: $1,000 to $3,000 or more, usually an outlet and often a plumber. If you rent, or you've never used a bidet, the attachment is the sensible first step. A bidet toilet makes sense when you own the place and you're replacing the toilet anyway.
Below: the two side by side, what each really costs, what a bidet toilet needs that an attachment doesn't, fit, moving house, what breaks, and who should get which.
At a glance
| Bidet attachment | Bidet toilet | |
|---|---|---|
| What it is | A nozzle on a plate under your existing seat | A whole new toilet with the bidet built into the seat or bowl |
| Price (TUSHY's ranges) | $30–$100 | $1,000–$3,000+ |
| Install | DIY, about 10 to 15 minutes, no tools beyond a wrench for most | Old toilet out, new toilet in; often a plumber; several hours |
| Power | None for non-electric ones | Nearly always an outlet |
| Water | Cold, from the toilet's supply (warm only with a sink hookup) | Heated water, built in |
| Extras | Pressure knob, sometimes a second nozzle | Warm seat, dryer, deodoriser, remote, auto flush, self-cleaning nozzle (varies) |
| Look | Your toilet, a hose and a knob at the side | One clean unit, no visible hose |
| Take it when you move | Yes, in 10 minutes | Rarely; it stays with the house |
| Fit | Most two-piece toilets; some shapes need checks | Fits the bathroom's drain position (the rough-in), not your old toilet |
There's a middle option too: a bidet seat, which replaces just the seat and lid. We compare it in bidet attachment vs seat.
The real cost: the price tag is only part of it
A bidet toilet's price is the toilet. The total also includes taking out the old one, installing the new one, and maybe an outlet. Here are the figures from Fixr's installation cost guide, the most detailed public one we found:
| Line | Attachment | Bidet toilet |
|---|---|---|
| The unit | $30–$100 (TUSHY) | $1,000–$3,000+ (TUSHY); Fixr's installed range $1,200–$2,000 |
| Install, DIY | $0, maybe $10–$25 for an adapter | Possible if you've set a toilet before; heavy, and the wax seal must be right |
| Install, plumber | About $100–$300 (Fixr) | Labor about $250–$600 for bigger bidet jobs (Fixr) |
| New outlet | Not needed | $120–$200 if there isn't one near the toilet (Fixr) |
| Running cost | Water only | Water plus electricity for the heater, seat and dryer |
So a realistic all-in: an attachment for well under $100 if you fit it yourself; a bidet toilet for somewhere from the low thousands upward once install and an outlet are in. If you're comparing either with what you spend on paper, our bidet vs toilet paper guide has a payback table you can run with your own numbers, and bidet installation cost breaks down every line of the install bill.
What a bidet toilet needs that an attachment doesn't
An outlet in the right place
Almost every bidet toilet is electric: it heats the water, warms the seat and runs the dryer. It needs a grounded outlet within reach of its cord, and in a bathroom that outlet should be GFCI-protected. Many bathrooms have the nearest outlet by the sink, not behind the toilet. An extension cord across a wet floor isn't the answer; an electrician is.
The right rough-in
The rough-in is the distance from the finished wall to the centre of the drain bolts at the floor. In the US the common size is 12 inches, and 10 and 14 inch rough-ins exist in older homes. A new toilet has to match yours. An attachment doesn't care: it uses your existing seat bolts, so the drain position never comes up.
Enough water pressure
Some bidet toilets are tankless and flush straight from the supply, and those list a minimum water pressure in their specs. Check the number against your home before you buy. An attachment also needs pressure for a good spray, but the fix is usually a cleaner filter or a fully open valve; see bidet water pressure too low.
Room and a strong back
A whole toilet is heavy and awkward to move through a small bathroom door, and the old one has to go somewhere. Ask the plumber whether removal and disposal are in the quote.
Comfort: what the extra money buys
Be honest with yourself about which of these you'd use every day:
- Warm water. The biggest difference. Cold water from an attachment is a surprise the first few times, and some people never like it. Our guide to bidet attachment warm water covers the sink-line option and what it adds.
- A warm seat. Pleasant in winter, invisible in summer.
- A dryer. Usually slow; most people still pat dry. See how to dry after a bidet without toilet paper.
- Adjustable nozzle position and spray types. Useful if more than one person uses it, or for a carer.
- Auto open lid and auto flush. Nice, not essential.
- The look. No hose, no knob, one clean shape. For some people this is the whole reason.
An attachment gives you the wash itself, which is the part that changes how clean you feel, and leaves out the rest.
Fit: two different questions
With an attachment the question is "will it sit under my seat?" Most two-piece toilets take one. One-piece toilets with a curved back, skirted toilets with hidden bolts, and some European shapes need a closer look. Our guides cover each: do bidet attachments fit all toilets, a skirted toilet and a French curve toilet.
With a bidet toilet the question is "will it fit the bathroom?": the rough-in, the outlet, the space in front for the longer bowl, and the door you'll carry it through.
Renting, or moving soon
This is where the choice is easiest. An attachment comes off in about 10 minutes and the toilet is as it was; you take it to the next place. A bidet toilet replaces a fixture you don't own, so in a rental it needs your landlord's written yes, and you'd normally have to put the original back when you leave. If you rent, read how to install a bidet in an apartment and how to remove a bidet attachment.
If you own and might sell, don't expect a bidet toilet to pay for itself in the sale price. Real estate agents quoted in national press are mixed on whether buyers pay more for one; we look at the evidence in do bidets add value to a home.
What breaks, and what it costs then
| Attachment | Bidet toilet | |
|---|---|---|
| Usual faults | A washer, a cracked plastic T-valve, a clogged nozzle | Heater, pump, sensor or control board; also the usual seals |
| Fix at home? | Mostly yes, with a $10–$25 part or a clean | Mostly no; warranty or the maker's service |
| Worst case | Buy another attachment | A repair, or replacing an expensive unit |
More parts mean more ways to fail. Our guide do bidets break easily? lists what fails on each type and the warning signs.
Who should get which
| You are… | Get | Why |
|---|---|---|
| Renting | Attachment | Comes off clean; no landlord fight |
| Never used a bidet | Attachment | Find out if you like it for under $100 |
| On a budget | Attachment | A fraction of the price, same basic wash |
| Remodelling a bathroom you own | Consider the bidet toilet | The toilet is coming out anyway; add the outlet while walls are open |
| Hate cold water, and you know it | Bidet toilet or an electric seat | Warm water is built in |
| Caring for someone with limited reach | Bidet toilet or seat with a remote | Adjustable nozzle and controls without twisting |
| Toilet is fine, want warmth without a new toilet | Bidet seat | The middle option: attachment vs seat |
Try first, upgrade later
A sensible order for most people: start with an attachment, use it for a month, and see what you miss. If the answer is "warm water," a seat might be enough. If it's "everything, and I'm redoing the bathroom," that's when a bidet toilet earns its price. TUSHY's own guide suggests the same route: start with an attachment if you're unsure, and upgrade later. The attachment then moves to a guest bathroom or comes with you to the next place.
Where ASSJET fits
ASSJET is an attachment, not a bidet toilet: one knob, cold water, no plug, under the seat you already have. If you want warm water and a dryer, a bidet toilet or seat is the right buy and we'll say so. If you want to find out whether you're a bidet person without buying a toilet, that's what we're making. It isn't on sale yet; find out which bathroom god you are with the quiz while you wait.
FAQ
Is a bidet toilet better than a bidet attachment?
It has more features (warm water, a warm seat, a dryer) and a cleaner look. It costs ten or more times as much and replaces your toilet. The wash itself is similar; the comfort around it is what you pay for.
How much does a bidet toilet cost installed?
TUSHY puts bidet toilets at $1,000 to $3,000 or more, and Fixr's installed range is $1,200 to $2,000. Add an outlet ($120 to $200 per Fixr) if there isn't one near the toilet.
Do bidet toilets need electricity?
Nearly all do, for the heater, seat and dryer. Plan for a GFCI-protected outlet within reach of the cord.
Can I put a bidet attachment on any toilet?
Most standard two-piece toilets, yes. Some one-piece, skirted and European shapes need checks first; see do bidet attachments fit all toilets.
Is a bidet attachment as good as a bidet toilet?
For the wash, close. For comfort, no: cold water, no dryer, no warm seat. Many people find the attachment is all they wanted; some upgrade after a few weeks.
Can I install a bidet toilet myself?
If you've replaced a toilet before and there's an outlet in place, maybe. It's heavy, the seal at the floor has to be right, and the electrics need to be safe. Many people pay a plumber.
More plain answers in our bidet guides, or skip ahead to the bathroom god quiz.
Sources
- Bidet Toilet vs Bidet Seat vs Bidet Attachment: Which One Is Best for You?, TUSHY. https://hellotushy.com/blogs/bidets/bidet-toilet-vs-bidet-seat-vs-bidet-attachment-which-one-is-best-for-you
- How much does it cost to install a bidet?, Fixr. https://www.fixr.com/costs/bidet-installation
- Bidet Attachments vs Bidet Seats vs Integrated Bidet Toilets, Rise. https://www.buildwithrise.com/stories/bidet-attachments-vs-bidet-seats-vs-integrated-bidet-toilets-complete-comparison
- Bidet Attachment vs Seat, Architecture Lab. https://www.architecturelab.net/bidet-attachment-vs-seat/