The Thinktank Waterless Toilet is a high‑reliability, low‑maintenance sanitation system built for long‑term off‑grid living. Its patented design solves many of the issues common in traditional composting and waterless toilets, offering cleaner operation, stronger odor control, and a more durable build.

Clean, Airtight, and Efficient

A fully sealed body and exterior‑draw ventilation system keep indoor air untouched. Instead of pulling conditioned air from the bathroom, the system draws fresh air from outside—reducing heat loss, improving odor control, and maintaining a stable indoor environment. A soft silicone lid gasket compresses into the bowl when closed, creating an airtight seal that is unique to this design.

Patented Trap Door System

The large, magnet‑secured trap door stays closed during liquid use and opens only when needed for solids. This prevents cross‑contamination, keeps the interior cleaner, and eliminates the “small opening” problem found in many composting toilets. The wide vertical chute minimizes contact with surfaces, making cleanup significantly easier.

Durable, High‑Strength Construction

The outer shell is rotationally molded—similar to whitewater kayaks and high‑end coolers—for maximum strength and longevity. Rated to 350+ lbs, it’s built for daily use in demanding environments and far exceeds the thin‑plastic construction of many lightweight alternatives.

Reliable Urine Diversion

Urine is separated through a patented channeling system and exits through a rear drain port compatible with standard 1" PVC. This allows flexible routing to a French drain, graywater system, or holding tank.

Quiet, Long‑Life Ventilation

The integrated fan is engineered for high airflow, strong static pressure, quiet operation, and long service life (rated for 150,000 hours). It’s easily accessible for maintenance and runs on either 12V DC or standard 110V AC with the included transformer.

Simple, Low‑Touch Maintenance

Solids are collected in standard 8‑gallon compostable bags—widely available and inexpensive. Each bag holds roughly 50 uses. No peat moss, sawdust, or manual mixing is required. A small amount of cover material can be added before emptying if desired.

Insect‑Resistant and Secure

Because the system is tightly sealed, insect ingress is highly unlikely—addressing a common frustration with many waterless and composting toilets.

Practical Details

• 19" seat height (ADA compliant)

• Compatible with standard child seats

• Hidden vent routing for a cleaner installation

• Marine‑grade stainless steel hardware

• Fast, straightforward emptying

• Industry‑leading 6‑year warranty (3 years on fans)

Manual