Installation guides
You own it.
Now let’s fit it.
Every how-to, quick start guide and manual in one place — for the toilet itself and for every kit and upgrade we sell.
How-to guides
Fitting the kit
Seven walkthroughs covering every upgrade we sell — most of them filmed on a real build, not a studio bench.
ArticleUrine Bottle Sensor UpgradeFit the upgraded magnetic float sensor to an older urine bottle.
VideoInstall the urine indicator light’s 9V batteryWhere the battery sits and how to seat the connector.
VideoTest the urine indicator lightA 60-second check that the sensor and LED are talking.
VideoInstall the Urine Drain-Away KitPlumb the urine bottle straight out of your rig so you never carry it.
VideoInstall the Replacement Fan KitSwap the 12V fan without removing the toilet.
VideoInstall the Venting Carbon FilterThe no-drilling option for scrubbing air on a full-time build.
VideoUpgrade a Cuddy or Cuddy Lite to the S1 Dry FlushFitting the adapter kit, step by step, live on camera.
Watch first
Installing a Cuddy
in a van conversion
A full step-by-step install, including building a retractable toilet drawer into a wetbath. Filmed by Tim and Katie on their own build.
Stuck halfway through?
Send us a photo.
We will talk you through it.
Email info@compocloset.com with a picture or a short video of where you are and we will tell you what to do next. Often the same day.
We’ve heard it all
Here’s the
honest version
No marketing spin — these are the real answers we give in support emails.
Does it really not smell?
Really. Urine and solids never mix, so there’s no sewage smell to start with. Cuddy also pulls air through a carbon filter with its built-in fan. At worst you’ll notice an earthy smell from the coir. The urine bottle will smell when you open it to empty it. That’s urine for you.
Cuddy, Cuddy Lite or S1 — which one is for me?
Cuddy is our original self-contained composting toilet for long trips and full-time use: agitator, urine indicator light, carbon filter, multiple venting options. Cuddy Lite is the same no-smell separation, simpler and budget friendly. S1 is for people who never want to see or handle anything. It comes two ways: as the S1 12V, which wires into your rig’s 12V system with nothing to charge, or with its own battery.
What do I do with the waste?
Liquids: pour down any toilet, dump station, or by a mature tree. Solids: always check the rules for your location. Usually solids from composting toilets may be bagged and put in a regular trash bin.
How often do I empty it?
Liquids every 2–3 days for two people. For solids: Cuddy every 2–3 weeks, Cuddy Lite every 8–12 uses (tie off and swap the bag), and the S1 every 1–2 uses. Compare that to a chemical toilet: every 2–3 days for everything, at a designated dump point.
Can I use it while driving, or on a heeling boat?
Yes. There’s no flush water to slosh around. The urine bottle has a one-way valve, so nothing comes back out on rough roads. Just secure the toilet so it can’t slide. Our portable toilets are used on sailboats, narrowboats and overland rigs.
Time to 💩 or get off the pot
Fitted.
Now forget
about it.
2-year warranty · free shipping to the continental US & Canada over $150
