Best RV Composting Toilet: Compare 10 Waterless Options

#1 · Best Overall

1. OGO Origin

• Weight: 28 lb
• Material: Polypropylene High Density Polyethylene

Best for: Tight van and boat builds.

Why it ranks #1: Its 15-by-16-inch footprint targets tight vehicle bathrooms, while the 12V push-button agitator, fan, power cable, and venting hose support installed RV use.

A 15-by-16-inch footprint lets the OGO Origin fit cramped van, RV, or boat bathrooms without a bulky side crank. Its push-button 12V agitator mixes solids with one tap, making this a compact option for buyers who want electric mixing instead of a manual handle.

The urine-diverting trap door sends liquid to a front bottle while keeping solids dry, separating the waste streams that the product identifies as important to odor control. A quiet 12V fan vents the unit, and its listed draw of about 0.48 amps a day supports modest solar setups. Floor mounting, a power cable, and venting hose are included; installation still requires room for the 15-by-16-inch base and ventilation routing.

Skip it if you need a toilet that works without electricity; the OGO NOMAD runs off-grid without power, plumbing, or chemicals.

Choose the Origin for a compact van, RV, or boat bathroom where automated mixing and a small footprint matter. Check that your layout can accommodate floor mounting, 12V power, and a vent hose.

Listed on Amazon as: OGO Origin Compact Composting Toilet – 15in Footprint for Van, RV & Boat

#2 · Best Vehicle Kit

2. Nature's Head Vehicle Kit

• Dimensions: 19"D x 20"W x 21"H
• Material: Plastic, Stainless Steel

Best for: Complete vehicle installation package.

Why it ranks #2: Designed for RVs and other vehicles, it includes a 12V cable, shell vent installation kit, mounting hardware, and coco coir for setup.

The Nature's Head Vehicle Kit bundles its Spider Handle toilet with a shell vent and installation kit, mounting hardware, 12V cable, and 9L bag of coco coir. That package gives van, camper, or RV converters key vehicle-installation components alongside a waterless toilet system.

The toilet operates without a black tank, water hookup, or traditional plumbing, supporting off-grid travel where those connections are unavailable. A shell vent and installation kit are included to support vehicle ventilation, while mounting hardware and a 12V cable address installation needs. The included coco coir provides composting medium for setup. At 19 inches deep, 20 inches wide, and 21 inches high, the floor-mounted unit requires room in the vehicle layout.

Skip it if you need a smaller listed footprint; the OGO Origin measures 15 by 16 inches.

Choose this kit for van, camper, or RV conversions that need a waterless toilet and bundled vehicle-installation parts. Its 19-by-20-inch base and 21-inch height still require a planned floor location.

Listed on Amazon as: Nature's Head® Vehicle Kit with Composting Toilet – Complete All-Inclusive Kit – 100% Self-Contained Waterless RV & Van Life Toilet System for Campers, Vans & Off-Grid Travel – Spider Handle

#3 · Best Manual Mixer

3. Compo Closet Cuddy

• Dimensions: 17"D x 15.2"W x 16.5"H
• Weight: 12.7 kg
• Material: Plastic: ABS

Best for: Manual mixing in mobile spaces.

Why it ranks #3: Made for RVs and compact mobile spaces, it has a 12V fan, carbon filter, and manual mixer in a 17-by-15.2-inch footprint.

The Compo Closet Cuddy combines a 3.9-gallon capacity with a handle-operated manual mixer, giving RV and boat users a self-contained toilet with mixing under their control. Its 17-by-15.2-inch footprint is intended for compact areas, including flush or freestanding placement.

A 12V fan and carbon filter provide the listed odor-control components, while the manual mixer requires users to mix waste after each visit. The product also says composting material is added once before use, making the workflow distinct from systems that call for adding material after every use. Its ABS construction and 12.7-kilogram weight are specified; the included 12V cable is intended for wiring to a vehicle electrical supply.

Skip it if you want one-tap electric mixing; the OGO Origin has a push-button 12V electric agitator.

The Cuddy suits RV, van, boat, or tiny-home users who want a self-contained unit and accept manual mixing after each use. Its fan needs a 12V connection, and its 17-inch depth calls for space planning.

Listed on Amazon as: Cuddy Composting Toilet – Odorless, Waterless & Self-Contained for RVs, Vans, Boats, Tiny Homes & Off-Grid | 3.9 Gal, 12V Fan, Carbon Filter, No Chemicals, Easy Clean

#4 · Best Urine Separation

4. Separett Tiny

• Dimensions: 19.6"L x 15.7"W x 18.5"H
• Weight: 18.7 lb
• Material: Plastic

Best for: Ventilated urine-separating RV.

Why it ranks #4: This self-contained RV-suitable model separates liquids and solids, includes a 2-gallon urine container, and comes with 12V and mains power options.

A built-in ventilation fan removes odors and moisture in the Separett Tiny, pairing urine separation with a self-contained, waterless setup. It is intended for tiny homes, RVs, boats, and off-grid use, offering separate handling for liquid and solid waste without water or plumbing.

The removable 2-gallon urine container gives liquid waste a defined collection and disposal workflow, while a separate solid-waste container keeps the two streams apart. The listed package includes a 12V / 110–240V toilet, universal power adapter, and installation manual, supporting more than one power connection context. At 19.6 by 15.7 by 18.5 inches, it needs more room than a small portable unit, and the fan makes ventilation part of the operating setup.

Skip it if you need a toilet that works without power; the OGO NOMAD requires no electricity, plumbing, or chemicals.

Choose the Tiny for an RV, boat, or off-grid bathroom where powered ventilation and a removable 2-gallon liquid container fit your routine. Plan for its electrical connection and 19.6-by-15.7-inch footprint.

Listed on Amazon as: Separett Tiny Self-Contained Urine-Separating Compost Toilet

#5

5. Sun-Mar GTG

• Dimensions: 24"D x 15.75"W x 19.8"H
• Weight: 25 lb

Best for: Quick setup with separated waste.

Why it ranks #5: Listed for RV use, this 25-pound floor-mounted unit has a liquid-solid separator and includes Compost Magic and a hardware kit.

The Sun-Mar GTG sets up in minutes and uses a liquid-solid separator, giving RV, cabin, or boat owners a straightforward waterless toilet workflow. Its product information also describes low-maintenance operation and no frequent dumping, useful for buyers seeking less routine waste handling.

The liquid-solid separator provides a distinct waste-management process, while included Compost Magic and a hardware kit support setup. Floor mounting is specified, and the unit measures 24 inches deep, 15.75 inches wide, and 19.8 inches high, so installation needs a defined footprint. Its 18-inch seat height is listed, offering a concrete fit reference for a bathroom layout. The supplied details do not state a container capacity, so emptying intervals cannot be quantified from the available specifications.

Skip it if you need a stated solids capacity before choosing; the Compo Closet Cuddy lists 3.9 gallons.

The GTG suits RV, cabin, garage, or boat owners looking for floor-mounted waste separation and a quick setup. Its 24-inch depth needs planning, and the supplied information does not quantify capacity or emptying intervals.

Listed on Amazon as: Sun-Mar GTG self-contained Urine Diverting Compost Toilet – Waterless, Low-Maintenance Toilet for Tiny Homes, Cabins, Boats, Barns, RVs and more…

#6

6. Nature's Head Spider Handle

• Dimensions: 20.98"D x 19.02"W x 20.98"H
• Weight: 28 lb
• Material: Plastic

Best for: Longer intervals between emptying.

Why it ranks #6: Its self-contained design and stated 4-to-6-week emptying interval for two full-time users suit longer stays, though its footprint is comparatively large.

Nature's Head says its Spider Handle toilet lets two people using it full time go four to six weeks between emptying, making capacity its central appeal. The manufacturer also describes the waste container as easy to empty in five minutes, a useful detail for buyers planning routine service.

The listed dimensions are 20.98 inches deep, 19.02 inches wide, and 20.98 inches high, so this unit calls for more bathroom room than a compact portable model. The close-quarters Spider Handle is the identified handle design, while the product description says installation is manageable for a reasonably handy person. The stated two-person, four-to-six-week interval offers a planning reference, but actual use should be considered alongside the space required.

Skip it if you have a very tight van layout; the OGO Origin has a listed 15-by-16-inch footprint.

Consider this Nature's Head for an RV or cabin where longer stated emptying intervals matter and the bathroom can accommodate its roughly 21-inch dimensions. The large-capacity claim is useful, but space planning remains essential.

Listed on Amazon as: Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design

#7

7. Separett Villa

• Dimensions: 26.5"D x 18"W x 21.3"H
• Weight: 34 lb
• Material: Paper

Best for: Waterless remote installations.

Why it ranks #7: This waterless urine-separating model offers a high-capacity design for extended use, but its 26.5-inch depth may challenge smaller RV bathrooms.

The Separett Villa separates urine without requiring water, additives, or mixing, enabling a waterless setup for remote homes and mobile applications. Its high-capacity construction is described as suitable for extended use between emptying cycles, appealing to buyers prioritizing fewer service interruptions.

Urine diversion separates liquids from solids, while waterless operation avoids plumbing connections and conserves water. The product description says no additives or mixing are required, which can simplify its routine compared with systems that call for added material and manual agitation. Its dimensions—26.5 inches deep, 18 inches wide, and 21.3 inches high—make it a larger installation, so a suitable floor area matters. Local rules may govern waterless toilet use.

Skip it if you need a compact unit for a narrow van bathroom; the OGO Origin measures 15 by 16 inches.

The Villa suits remote properties, cabins, or RVs where waterless operation and extended intervals between emptying are priorities. Allow for its larger dimensions and check whether local authorities accept waterless toilet use.

Listed on Amazon as: Separett Villa Urine-Separating Compost Toilet

#8 · Best No-Power Portable

8. OGO NOMAD

• Dimensions: 15.4"D x 13"W x 12.38"H
• Weight: 12 lb
• Material: Polypropylene (PP)

Best for: No-power portable camping.

Why it ranks #8: At 12 pounds and 15.4 by 13 inches, it is easy to place in a mobile setup and needs no electricity, plumbing, or chemicals.

The OGO NOMAD works without electricity, plumbing, or chemicals, making it suited to truck campers, primitive campsites, rooftop tents, and boats without utility hookups. At 12 pounds and 15.4 by 13 by 12.38 inches, it is a portable, self-contained option for mobile use.

With no power or plumbing requirement, the NOMAD avoids electrical and water connections that can complicate an off-grid setup. Its compact listed dimensions and 12-pound weight support moving or storing it in mobile accommodations. The package includes two compostable bags, a bag of coco coir, and a spray bottle for cleaning; users add composting medium. The supplied information does not list a powered fan or mixer, so this is a simpler, manually managed choice.

Skip it if you want an adjustable seat height; the TROBOLO WandaGO offers 12-inch and 17.2-inch settings.

Pick the NOMAD for campsites, truck campers, rooftop tents, or boats where utilities are unavailable and portability matters. It suits buyers comfortable adding composting medium and handling a toilet without listed powered mixing or ventilation.

Listed on Amazon as: OGO NOMAD Self-Contained Composting Toilet – Urine-Diverting, Portable RV

#9

9. TROBOLO WandaGO

• Dimensions: 15"D x 13.4"W x 12.4"H
• Weight: 10 lb
• Material: Plastic

Best for: Adjustable-seat vanlife toilet.

Why it ranks #9: This 10.4-pound portable option fits mobile use and offers two seat heights, but its listing emphasizes camping and vanlife rather than RV installation.

The TROBOLO WandaGO changes seat height between 12 and 17.2 inches, giving campers a choice of a lower portable setup or a taller seating position. Its 10.4-pound weight and compact dimensions also make it practical to carry or store in many campervan compartments.

The adjustable seat pairs with an ergonomically shaped profile, accommodating different seating preferences in a compact footprint. TROBOLO says the unit supports up to 330.7 pounds. Separate 1.2-gallon liquid and 1.7-gallon solid containers keep the waste streams distinct, while the stacking function helps reduce storage space when closed. At 12.4 inches high, 15 inches deep, and 13.4 inches wide, it is aimed at mobile use rather than a roomy permanent bathroom.

Skip it if you need a larger listed solids capacity; the Compo Closet Cuddy specifies a 3.9-gallon capacity.

The WandaGO fits vanlife and camping buyers who value a light unit, compact storage, and adjustable seating. Consider its 1.7-gallon solids container when deciding whether the capacity suits your trip length and use.

Listed on Amazon as: TROBOLO WandaGO Composting Toilet, Portable Outdoor Camping Toilet, Urine Diverting Dry Toilet With Height Adjustment

#10

10. Thinktank Waterless Toilet

• Dimensions: 23.2"D x 18"W x 19"H
• Weight: 30 lb
• Material: Plastic

Best for: Ventilated bag-based waste handling.

Why it ranks #10: Its separate air intake and exhaust and included vent pipes are relevant to vehicle sanitation, but the listing does not specifically identify RV use.

The Thinktank uses a waste bag behind a patented trap door, keeping waste hidden from users and limiting exposure according to its product description. Separate air intake and exhaust pipes support its ventilation approach, while an airtight design is intended to avoid losing heated or cooled indoor air.

The package includes two 16-inch vent pipes and a wall adapter, giving buyers key components for routing ventilation outside. The product describes massive airflow and separate intake and exhaust pipes, connecting odor management with an installation that needs suitable vent routing. Waste is contained in a bag rather than a bowl that gets messy, and the included solid-waste container and ten waste bags support that workflow. Its 23.2-by-18-inch footprint needs a dedicated installation area.

Skip it if you need a compact portable toilet; the TROBOLO WandaGO weighs about 10.4 pounds and stacks for storage.

The Thinktank fits buyers prioritizing bag-based waste handling, reduced exposure, and routed ventilation in a fixed RV or tiny-home bathroom. Check available floor space and plan the intake and exhaust pipe installation.

Listed on Amazon as: Thinktank Waterless Toilet White