Best cassette toilets & shower combos for your RV or pop up camper

Being on the road, with or without a certain destination in mind, brings a heady combination of rush and peace. The adventure that comes with living in a van, traveling, and seeing sights that not everyone has the chance to witness, is something that can neither be easily replicated nor replaced.

If you’re in a hurry, we’ve summarized our absolute favorites when it comes to the best options below.

Best luxury option
Porta Potti 92306
Best value option
Best budget option
Porta Potti 92306 White Thetford Corp
SereneLife Outdoor Portable Toilet with Carry Bag, Travel Toilet with Level indicator | | 3 Way Pistol Flush | Rotating Spout, for Camping, Boating, Traveling & Roadtripping
Camco Premium Portable Travel Toilet With Three Directional Flush and Swivel Dumping Elbow | Designed for Camping, RV, Boating And Other Recreational Activities - (5.3 gallon) (41545),White
What we love
With a solid 4 gallon fresh water tank, you get a powerful 50 flush cassette toilet.
Great portability at a great price
An unbeatable cost and quality combo
Best luxury option
Porta Potti 92306
Porta Potti 92306 White Thetford Corp
What we love
With a solid 4 gallon fresh water tank, you get a powerful 50 flush cassette toilet.
Best value option
SereneLife Outdoor Portable Toilet with Carry Bag, Travel Toilet with Level indicator | | 3 Way Pistol Flush | Rotating Spout, for Camping, Boating, Traveling & Roadtripping
What we love
Great portability at a great price
Best budget option
Camco Premium Portable Travel Toilet With Three Directional Flush and Swivel Dumping Elbow | Designed for Camping, RV, Boating And Other Recreational Activities - (5.3 gallon) (41545),White
What we love
An unbeatable cost and quality combo

Whether you’re only in it for the annual road trip or you’re a camper at heart, you’ll surely be familiar with both the fun times and mishaps when it comes to staying in an RV or pop up camper. Even veteran campers have things that they wished they knew when they were just starting out on living the van life, such as having the proper water source, cassette toilet, shower area, and being sustainable, among many others.

In this blog post, we’ll delve into what they are first. Knowing which one would suit your vehicle and lifestyle the best will bring huge changes to your camping life! Having a portable toilet right from the start of living in a van will improve both sanitation and comfortability, which will help you adjust to the lifestyle.

Here’s the extensive guide on the best cassette toilets and shower combos that can fit perfectly into an RV or whatever purpose you may wish for – make sure to check out the Thetford options!

What is it?

Cassette toilets are a common fixture that you’ll see in European RVs, a permanent toilet with a portable holding tank that makes camping life a lot easier. Bear in mind to not confuse them with portable ones. With cassette toilets, the toilet is permanently attached to the RV, and only the holding tank is removable or portable. On the other hand, with portable toilets, the whole system (toilet and holding/waste tank) is removable/portable, which is a good feature for when you prefer to take a dump outside.

Nowadays, even in America, a lot of RVs for sale have these in them compared to the traditional RV toilets, which brought a surge of popularity for these products. Numerous manufacturers that were solely based in Europe before are now venturing into more countries due to this. Check out the table below for your cassette toilet shower combo, and cassette toilet needs for your RV or pop up camper, with Thetford being on that list!

beautiful overlook from a tent

Benefits of having one

Why is it the best pick?

A lot of campers prefer the cassette toilet over the usual options because of its portable holding tank feature. With traditional options, you’d have to drive to a place with a dump station before you can clean it out. This can be quite a hassle when you’re camping at a site with no nearby dump station in sight. On the other hand, with this option, you can camp out anywhere regardless of the presence of a dump station. Since it has a portable feature, if there are no available dump stations nearby, you can simply remove it, go to the nearest public restroom, and dump the contents of the tank there. This way, you no longer have to worry about prioritizing the availability of dump stations when picking for a camping site.

Also, having an option to buy a replacement for the portable waste tank will save money in the long run. This way, if it gets damaged, you only need to buy a new tank of the same type—you don’t have to change the toilet, too!

Furthermore, they preserve the smell of clean air inside your RV with its chemical reservoir that breaks down waste and prevents the odor from wafting out from under the drain valve. Lastly, there is no need to separate liquid and solid wastes when you’re using chemical cassette toilets, which makes everything more convenient for you.

How does it work

They are very easy to use and maintain. The way it works is very similar to how a home toilet would operate. In a nutshell, here’s how it works: a compact bowl is installed permanently in the RV over a removable waste tank, the waste is flushed directly into the tank after flushing, and you must remove it when it’s full.

Toilet Pump flush Portable tank

In general, all models have three main components, namely, the toilet, flush/water source, and the portable waste tank.

campers sitting on a rock

  • Toilet
    • As previously mentioned, it is permanently fixed. They have a control handle that enables you to open and close the valve between the toilet and the waste tank underneath. Some have a toilet that turns 180 degrees to allow maximized space usage, while some can only rotate at a 90-degree angle.
  • Pump flush
    • The flush makes use of fresh water to direct the waste down into the tank. For most models, the water is usually sourced from the RV’s central reservoir, while some have their own holding tank.
  • Portable waste tank
    • It is usually accessible from a door located outside, on the driver’s side, of the RV. This makes retrieval easy when you need to dump the contents.
    • It is a chemically treated reservoir; a chemical solution goes into this tank, which breaks down the waste and prevents bad smells from permeating through the RV.

To use the unit, all you need to do is make sure the water source is connected to the RV’s central water tank or if the model has its own water tank, make sure it’s filled properly. Check if the chemical solution is in the wastewater reservoir. Once everything is set up, you can go ahead and use the toilet. Just make sure that the valve is open prior to using it, so that the waste can travel to the reservoir after use. Once you’re done and you’ve already flushed, close the valve and lid.

Monitor the indicator of the waste reservoir regularly; check if it’s nearly full. It is always better to empty it out before its capacity is maxed out to ensure a fresh-smelling vehicle. Also, always monitor the availability of fresh water for the flush, whether it’s your RV’s central water tank or the water tank.

How often should you empty it?

With the help of the chemical treatment within the water reservoir, you won’t need to empty it out as often compared to bucket toilets that usually require daily cleaning. It is recommended to empty out and clean a cassette toilet every 2-3 days to retain a fresh and clean environment within your RV. The disinfectants that go together with the chemical toilet are helpful when cleaning the toilet. Simply mix water and a liquid bio detergent so that the remaining wastes in the tank can be disposed of in liquid form, which makes cleaning and maintenance easier. Water and ammonia or distilled white vinegar can also be used to keep the tank and area smelling fresh.

Also, it is very important to carefully read and follow the user manual’s instructions. Do the indicated maintenance check and cleaning on the valve blade and seal to prevent any mishap from happening while you’re on the road.

Features to look

What to look for
Capacity Weight Sealed valve
Size Flush Indicator
Handles, wheels

Size, Weight & Capacity

Ensure that the model that you’re buying can easily fit without any repercussions. Consider the working area that you’ll be left with when it is installed. If you want something that can double as an extra seating, look for tall chemical toilets that will be comfortable to sit on. If you’re only looking for an option that you’d only use solely during relieving yourselves, then it’s better to opt for shorter models to save up space.

Also, it’s important to take note of the weight that the whole system will be when it is full, and make sure that you can handle the weight when it’s time to carry it to the dump station. If you bought a 5-gallon chemical toilet, make sure that you can carry it when it’s full, which can weigh up to 30-40 lbs.

For the capacity, consider the number of people that it will accommodate and your access to dump stations. If you’re only travelling by yourself and will be camping in areas with dumping stations, a 3-gallon cassette toilet may be the perfect choice for you. But if you have less access to dumping stations or you’re traveling with one or two more companions, then opt for a toilet that has a bigger capacity.


For flushes, choose your preferred flushed type. Some have a pump flush, while some have a battery-powered flush. Both are useful, but some people prefer pump flush better because you won’t need batteries for it. Another thing to consider is the flush nozzle type. It’s better to pick a three-way nozzle because it keeps everything tidier after every flush compared to a single sprout flush.


Not all models have colored indicators that will tell you when the tank is nearly full (or already full). It’s better to opt for one that has one, so that you can plan ahead and make your way towards the nearest public restroom or dumping station. This also makes cleaning and maintenance easier because ones with no indicators can be pretty difficult to monitor, and sometimes leaks happen when you’re not paying close attention to the capacity.

Lid lock and sealed valve

Always pick one that has a tight lid lock and valve between the upper and lower tanks to prevent splashes and leaks and to avoid bad odours. Sometimes, pressure can build up in the waste tank, and opening the valve can cause some splashes. So, it’s better to open the valve first while the lid is tightly locked, to make sure that you won’t get splashed by wastewater.

Waste tank handle, wheels, and emptying spout

Toilets with a large capacity can become very heavy when full, as mentioned earlier. Make sure to pick a brand that offers carry handles for easier maneuvering of the tank when it’s time to clear it out. Some models even have extendable handles and wheels, which is a great pick for heavy waste tanks because you can carry them like luggage. Also, look for a model that has an emptying spout, so you can easily pour out the liquid waste accumulated in the tank.


Noteworthy Manufacturers

Manufacturers to look for
Thetford SereneLife Domestic


Thetford is one of the most renowned manufacturers in the market for this type of product. This brand is widely known among traveler folks because they do not only make models for RVs but they also have ones for boats. Their products are available in numerous countries. Thetford offers products with capacities ranging from 2.6-gallon to 5.5-gallon. Here are some noteworthy models for sale made by Thetford:

  • Thetford Porta Potti 260B
    • This has a 2.6-gallon waste water tank, which is ideal for a solo camper or if you frequent a dumping site. It’s fairly easy to carry due to its capacity, and it takes up less space inside the RV with its small and compact design (14” x 13.4” x 15”).
    • It has an average of 27 flushes and has a flush pump.
    • For cleaning convenience, it has a rotating wastewater/emptying pour spout and a sealed drain valve.
  • Thetford C402-C
    • This model is one of the most popular options due to its huge capacity of 5.1 gallon. This is a good choice for campers who travel in twos, or someone who doesn’t frequent dumping stations every day. This has a 12-volt pump and flushing system and has an average capacity of around 56 flushes.
    • The tank also features a retractable handle and fitted with wheels, which makes cleaning much easier!
    • C402-C also has left-hand and right-hand entry models for easy installation.
  • Thetford Porta Potti Curve 550E
    • This has the biggest capacity and most unique design. It is large (18” x 18” x 16”) and sturdy, and boasts a huge capacity of 5.5 gallons. It has an average of 56 flushes in between cleaning. This is the best pick for an RV housing 2 or more campers or if you’re going on a long road trip with few dumping station stops.
    • This has a battery-powered flush and it also has a convenient paper holder.
    • One of the best features of this model is its water level indicators of both its top and bottom water tanks, which makes monitoring a lot easier. Also, cleaning is made easy with the rotating pour spout, carry handles, and sealed drain valve.


SereneLife offers innovative lifestyle products, ranging from electronics, indoor and outdoor appliances, sports appliances, and more. Their models are worth mentioning due to their large capacity and lightweight yet sturdy build. Here’s a model that’s worth checking out:

  • SereneLife SLCATL320
    • This has the second largest capacity, with a 5.3-gallon wastewater tank reservoir. It has an average of 50 flushes in between cleanings. It has a dimension of 16.5” x 13” x 16”.
    • It is equipped with a powerful manual flush/piston pump flush, which is fed water through its own 3.5-gallon clean water reservoir.
    • A notable feature is its double-sealed drain valve that closes tightly to prevent waste and odor leaks, and a sturdy build that enables it to double as a secondary seating for your RV.
    • Cleaning and maintenance is easy with its rotating pour spout and carry handles.


Dometic is another well-known brand, with models for sale around Europe, U.S., and Canada. Dometic boasts products that are highly durable, made with ABS and high-density polyethylene, and adding stainless steel hold downs to their large capacity models so that you can drive without worrying about disturbing the installation. Surprisingly, you can even stand on these heavy-duty toilets if you need to reach for something—that’s how durable they are. These added benefits, however, are reflected in the pricey cost of Dometic models, but it’s proven that the added costs are worth it. Like Thetford, Dometic offers various models with different capacities, ranging from 2-gallon up to 5-gallon. Here’s one that you might want to check out:

  • Dometic 301097506
    • It has a large capacity, featuring a 5.0-gallon waste water tank. with an average count of 50-55 flushes.
    • It has stainless steel hold-down brackets for a more secure installation that won’t budge even when you drive around and encounter some bumps on the road.
    • This has a push-button pressurized flush and has a dimension of 13.5” x 15.5” x 16.5”.
    • There are handles on both top and bottom tanks, which makes moving and cleaning easier. Also, its rotating pour spout and sealed drain valve adds to the convenience of cleaning.
    • couple traveling in a small van

Other Noteworthy Tools for your RV life:

In addition to these products, we have a brief list of items that are proven to be useful if you’re getting ready for your next trip, and some can even be brought along on your trip to make your life easier.

  • Amp Wires, Breakers, & Circuit Charts
    • This blog post that I made features a comprehensive chart and recommendations for extension cords, wire sizes, etc., to make sure that you use the proper electrical equipment to avoid damaging your appliances. Having a busted appliance while you’re on the road is a recipe for disaster, so you have to be careful! Read through the blog post to choose the safest and most affordable extension cords, service wire, etc., for your camping needs.
  • Waste Oil Heaters
    • For a dedicated camper, the RV life does not stop even when winter starts to set in. Check these waste oil heaters and find one that can provide you the extra warmth that you need. These heaters are also a perfect addition to your house! This type of heater makes use of waste oil, which means that if you use this heater instead of the traditional ones, you’re even helping with lessening the amount of oil waste!
  • Welders, plasma cutters, & mini metal lathes
    • Being on the road means you gotta have something that you can easily take with you anywhere. And one thing that camping taught me is that you should be prepared for impromptu construction projects because sometimes, things just don’t go ahead as planned. Surely, these TIG welders, MIG welders, engine-driven welders (these ones do not need an external power source!), plasma cutters, and mini metal lathes can be useful for fixing something in your RV or cutting wood at a campsite! With these tools, you can do some woodwork and metalwork with ease, whenever you need to. Check out these UV light sanitizers as well

person sitting in a tent

Well, this marks the end of our discussion on these camping additions. I hope this article helped you decide and shorten your list of which among the options that are up for sale on Amazon or your local hardware store is worthy to check out. A lot of beginner campers have regrets about not having the right type at their disposal, so I’m happy to provide information that can lessen such mishaps. I hope this blog post will help you conquer the camper life with ease!


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