Power:
The Clesana C1 runs on 12V and draws up to 22A during its sealing cycle. That takes a heavy-gauge 12V line, which many factory van and RV circuits don't have. No strong line at the toilet location? Add the Clesana Power Management, which uses a small buffer battery to deliver the power the C1 needs.
The Clesana C1 with L-Adapter is a retrofit kit that allows you to replace certain cassette toilets—like the Thetford C220 and C260—with the Clesana C1 waterless sealing toilet. The L-shaped base is designed to cover the mounting holes left behind by the removed toilet, giving you a clean, finished installation without floor modifications.
The L-Adapter is confirmed compatible with the Thetford C220 and C260. For other models, download the Clesana Compatibility Matrix to check whether your specific toilet is supported before ordering.
The toilet unit itself is identical—same sealing technology, same operation, same liner system. The difference is the base. The Round Base is for new installations where no toilet was previously mounted. The L-Adapter is for retrofit situations, covering the existing floor holes from a removed cassette toilet like a Thetford C220 or C260. If you're replacing an existing toilet, order the L-Adapter. If you're doing a fresh install, order the Round Base.
The Clesana C1 with L-Adapter is $[PRICE]. The main ongoing cost is foil liner refills, starting at $41.95 for a 2-pack. Shop refill packs.
The L-Adapter is specifically designed to cover the mounting hole pattern of the Thetford C220 and C260. For other toilet models, check the Compatibility Matrix before purchasing to confirm fit.
The Clesana C1 automatically seals waste into individual disposable pouches using a foil-like liner—no water or chemicals needed. Each pouch is heat-sealed after every flush to prevent odors and leaks. Pouches are stored inside the toilet until full, then disposed of in a standard trash container. No dump station required.
No. The Clesana C1 is 100% waterless and chemical-free. No plumbing connections are needed—just an electrical connection for the sealing mechanism. This makes it especially practical for retrofit installs where running new water lines would be difficult.
Each liner pack averages about 40 uses, depending on which flush size you select. Refill packs are available here.
Yes—installation requires a professional or someone with solid electrical experience. No new plumbing is needed, but the Clesana C1 does require a proper electrical connection. Installation and operating instructions are included, and PDF versions are available in the Downloads section above.
The Clesana C1 runs on 12V and draws up to 22A during its sealing cycle. Many factory 12V lines, including the one that fed your old cassette toilet, can't handle that load. If yours can't, the Clesana Power Management adds a small buffer battery that supplies the power, with no need to rewire your van or RV.
Yes. EuroCampers is an authorized US Clesana dealer, and the Clesana C1 with L-Adapter ships from the USA, so there's no overseas shipping or customs to deal with. We're a family-owned business near St. Louis and have been importing European van and camper gear since 1997. If it's currently out of stock, a waitlist is available on this page.
Yes. Because the Clesana C1 requires no water or chemicals, it's an excellent choice for off-grid travel. The retrofit L-Adapter makes it easy to upgrade an existing cassette toilet installation without any plumbing work.
