RV Bidet!

Update: Jan 2, 2018 Thanks Google! I didn’t think much when I posted this, but this page has been showing up in Google searches for terms like “rv bidet” and the like, actually becoming #1! Turns out a lot of people like having a clean time in the bathroom.

One question I get a lot is “how about fancier bidets with heated water and such? Well as I explained I personally don’t see the need. We camp during moderate weather, and the water temperature is fine with us. The heated ones are also a potential mold trap if you leave them on all the time. But all that said a heated one would work out just fine. Just look for one that will physically fit in your space. (The fancy ones have a remote control panel which actually works well for the tight space).

And so back to the original article –

OK so, admittedly, the concept of the bidet hasn’t really taken off in the USA.  You see them now and then, but most of us are apparently content with wiping ourselves with copious amounts of Costco toilet paper and calling it a day.

Long ago we got hooked on these contraptions and have installed them in every toilet in the house.  We started off with some fancy $600 version that had everything from built in heat to a butt dryer. (I kid you not).  But besides being expensive,  we discovered those devices were mold and mildew traps, hard to keep clean, and generally silly.

So the dirt cheap versions we use now just spray your ass (and potentially other nether parts) with whatever water is circulating in your cold water line.  Most of the time the temperature of that water is going to be fine.

We just got our RV, and frankly didn’t know what to do with the toilet without the bidet on top.  The so called “septic safe” toilet paper falls apart in your hands, and you can’t put a “flushable wipe” into an RV toilet.  We read that some people keep a trash bag in their RV bath and toss used wipes into it, and, uh, that’s just not happening in ours.

So really for an RV the bidet is just perfect.  It greatly eliminates the need for toilet paper – just a few sheets are needed for, uh, drying purposes.  The amount of water used is quite small with a little practice.

This is really a very simple project if you are an amatuer plumber like me.  If not, you could just purchase the items and then call any RV mechanic or even a regular plumber to make the connection for you.

I’ll list the exact parts I used at the bottom of this post for reference.

First, I started with this bidet off Amazon:

Its amazingly cheap (less that $35 as of 2018) and I already owned a few.  As you can see all you do is remove the seat and fasten underneath.  Well, almost.  The RV toilet typically doesn’t have home plumbing, so I had to improvise a little.  My RV (probably like yours) has a 1/2″ pex line that goes directly to the toilet.  After staring at it a while I decided the simplest approach would be to cut the pex line and install a tee for the bidet.

As you can see I selected a tee with a 1/2″ male thread which will fit the braided hose supplied with the bidet.  The key is, after the first cut, insert the brass tee and make a precise mark on where to make your second cut.  Pex is very stiff, so if you are off – even a little – it won’t fit.  A millimeter too long is good – you can bow the pex a tiny bit – but if you are too short you are going to have a bigger job.

If I was smart, I would have made the cut, then bowed the pex enough to get the other side on the tee, and probably finished in a few minutes.  But I decided to remove the toilet side of the pex, which for reference, looks like this:

That probably wasn’t necessary, and its a bit hard to put back on.  Even with some liquid pipe joint compound – the kind that never hardens – and being very careful not to cross thread – that black plastic swivel connector seemed kind of cheap and hard to reattach.  I had to tighten it a lot more than I expected to get it to stop dribbling.  But it did make the tee connection a bit easier, and the final result looks like this:

A couple things.  First, since the length has to be so precise, if you do disconnect the toilet reattach before making your crimp.  That way you can be sure the length is correct.  Also, I added this perfect little shutoff valve before I threaded the braided hose on – which came with the bidet.  It serves both a useful purpose in case the bidet springs a leak, but also you can shut it off if a toddler is around.  I liked the shutoff so much I put a second one on the shower head – as the one supplied with LTV dribbled even when off.

The bathroom is so tiny that I was just barely able to get the pinch crimps on.  The hardest part of this job by far was figuring out how to work in such a small space and then grunting and sweating trying to reach the pex and make perfect cuts and crimps.

So this pretty simple project resulted in the bidet working perfectly.  It just fits the toilet as you can see in the first picture.  The supplied braided hose just barely reached but presses against the wall a bit.  I may look around for a 3/8″ compression elbow to alleviate that.

Here is a list of the products I used available at Amazon, except for the brass tee which I had to order from Home Depot.

(Paid Links)

So that’s it.  My first RV upgrade.  We are looking forward to trying out the bidet on our next trip (but will not be posting any pictures of it in use).

34 thoughts on “RV Bidet!

  1. Hi! Just wanted to thank you for the write-up on the bidet installation. We use the same bidets in our house so I’ve installed a few of those same ones already. I was unsure about how/if they would fit on an RV toilet so it was great to see one installed. The only modification I made to my installation was the T fitting. They (Home Depot) were out of stock so I just did a regular PEX T and then did a short section of PEX to a 1/2 PEX to 1/2 threaded fitting. This actually ended up being beneficial because the hose that came with the bidet wouldn’t have reached down to the T without and extension.

    1. Hi thanks for stopping by! Yes it was kind of a mystery to me why there wasn’t much info on RVs and bidets so I figured I would do a little write up. It an easy enough installation for anybody who doesn’t mind doing some pex crimps.

      Glad to hear you found it helpful!

    2. Great piece however I need to inform you and the readers these bidets won’t fit a standard Thetford RV toilet.
      If you remove the seat you will notice a large hump in the center of the toilet. The bidet will fit the mounting holes, BUT the hump will not allow the bidet housing to sit back to a correct position for cleaning. You Wind up cleaning your testicles

      1. Hello I have heard about the toilets with humps. I think if you google it some people grind off the hump. In the meantime nothing wrong with an extra clean set of testicles in my opinion… But sorry, I only installed on a Dometic toilet which has a standard house style seat. Wondering though, since the plastic bidet housing just holds it together, whether you could cut the plastic around the hump with a dremel or similar tool, i.e., cut the bidet not the hump.

        1. Installing bumpers on the bidet might work. Also installed taller ones on the front part of the seat. That would probably do the trick.

  2. You sir win the day! Since installing a bidet in our house I’ve been trying to figure out the best way to install one in our camper. And here you’ve installed the exact bidet that we have in our house on the exact model of toilet we have in our camper. Me and my rump thank you. My husband (who will be in charge of install) may not. 🙂

  3. Walter I have heard about RV toilets that have a hump in the rear but have never seen one, so I can’t say. The rear part of this bidet serves no purpose other than to keep it securely under the seat, so if necessary you could trim a bit of the mounting plate off. But if the hump is so large that it covers a lot of the mounting plate, then probably not. So not really sure, sorry… I do know that these new dometic toilets like I have are remarkably cheap and easy to install so for me it would be worth considering replacing the toilet if I couldn’t fit s standard bidet!

  4. Heh Greg, Mine is a really tight fit in a small RV. It needs a little over 4″ on the left side of the seat for the water control. But there are smaller ones out there. Some expensive ones have a remote control so there is zero overhang.

  5. I had to buy a new toilet for my new camper!! I bought this one and it worked like a charm: Dometic w 310 Series Standard Toilet, bought it from Amazon. Did what Brendon said and used a “T” and added more hose to reach. Purchased a PEX clamp kit also and worked great, did the plumbing when the toilet was removed.

  6. Thanks for this article. I realize you posted a while ago. I have a question. How does the water work. If I need to step on the lever to flush. Will I need to step on the lever to use the bidet? Or is the water pressure just there waiting?

    1. Hello! No, if it was plumbed directly into the toilet you would indeed have to flush at the same time, which would be a big water waster and possibly acrobatically impossible. 🙂 The way I plumbed mine, the bidet is connected to the water supply before it enters the toilet with a tee, so that the bidet can be used anytime – no foot flush needed!

  7. Hi. Thanks for this it’s perfect. For ease what it the original toilet you have installed it onto?

    1. Hello I have a small Leisure Travel Unity Sprinter RV. I am not sure which model it is but its a Dometic. It’s the 300,310, or 320 I am not really sure what the difference is. The only time I think you may have an issue is some RVs have a toilet with a “hump” that gets in the way. The bidet does not connect to the toilet plumbing, so if it fits it will work.

  8. I am a women along & I need one in my RV
    I do know how to hook my house one up, but from note don’t think I can do for RV & don’t no who to go that can. I really need to get one put in, Where would be the best place to go for this ???
    Thank you🤠🤠

  9. All RVs and home toilets should have bidets in US. So much more sanitary and no toilet paper to buy anymore! Saving paper means saving trees! I have installed a bidet in my RV after using at home. I wouldn’t be without it.

  10. I just finished the install on my toyhauler. I can answer the question about the “hump” at the back of some toilets. The model 180 does and from looking at the 120 in this thread that one should be no problem either.

    The job took about 30 minutes with the most time being taken up with working out a leak at one of the connections. More tape and a little tighter did the trick. I always seem to end up with a leak at the end of plumbing jobs but what would be the fun if they all went easy.

  11. Thanks for all the information. Heading to a Maine next week to close up my new to me Bighorn and will install the bidet before winterizing. Always wanted to purchase a Pex tool and now have a reason to. Will let you know how it goes. Was afraid I was going to have to “rough it ” when away from home without a bidet.

    1. Good luck with the new Bighorn! The crimp tools are pretty simple to use. I did a few test crimps to acquaint myself with the tool when I first got it. The main things are to make sure the crimp is the correct distance from the end of the pex, and that its fully crimped on. The ones I did many years ago are still holding. I have also used a lot of Shark-Bite push fittings and they are still all holding. The push fittings are expensive and bulky though, so I rarely use on pex unless the area is so tight I can’t get a crimp tool in…

  12. Thanks for the info. Is the thread and size of the black fitting on the black back of the toilet same as the home toilets? Will the splitter they supply fit? Can’t tell if you did the split because of space or size of fitting.

    1. Hello it’s been a while but it’s my recollection that it wasn’t practical to use the toilet fitting. I think it was a different thread, very tight space and too far away. It was just much easier to cut the pex.

    1. Hello,

      The water pressure in the RV is usually a little lower than a home, depending on what you have your pressure regulator set to. So in our RV, yes, the water pressure on the bidet is less than home. Which is really good, because at home its way too easy to turn it up too high. In the RV it seems “just right”.

  13. found a number of the bidet manuf.
    will supply the three way valve. I’ve installed 3 in three diff. rvs without a hitch.
    just need a little imagination sometimes. I hooked mine to my instant hot water
    heater and it works great.

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