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Sun-Mar Centrex 3000

$2,245.00

Availability: 2 to 3 weeks

Handles residential use for families of 8 (6 adults) or vacation use for families of 11 (9 adults).

SKU: 44120

Sun-Mar Centrex 3000 Central Composting Toilet System


This item requires a custom freight quote. After your order is placed, we will contact you with shipping rates and will complete your order upon your approval.

The Sun-Mar Centrex 3000 Central Composting Toilet System utilizes a continuous-flow design for heavy seasonal use or medium residential use. The continuous flow system rotates the drum, moving compost along before it drops automatically into the collection housing at the end of the unit. Under normal operating conditions, the drum will not have to be turned backwards for emptying.

The Centrex 3000 features a 370-Watt, 120-volt thermostatically controlled heater in a sealed compartment beneath the unit, a 35-Watt fan, and a 2" vent stack. This heater assists in evaporation of liquids, reducing the amount of effluent from the unit. The fan removes any fresh odors from the unit, ensuring odor-free operation. Also includes a 1" drain hose that should be connected to the 1" drain at the bottom left of the unit.


Low-Flush or Waterless?

By default, the Centrex 3000 is designed for use with one or more Sun-Mar Low-Flush Toilets (available separately above).

To make the system waterless (dry flush), use the Sun-Mar Waterless Kit and one or more Sun-Mar Dry Toilets (available separately above).

Sun-Mar Centrex 3000 Central Composting Toilet System Specs

  • 30¼" H x 27½" D x 71" W
  • 45½" D required to remove drawer
  • 102 lbs
  • Residential/continuous use capacity: 6 adults or families of 8
  • Seasonal/vacation use capacity: 9 adults or families of 11
  • Vent pipe: 2" PVC thin wall
  • 1" drain hookup required
  • Fan: 35W
  • Heater: 370W

About Sun-Mar Composting Toilets

Sun-Mar Composting Toilets save more than 10,000 gallons of water per year, keep water clean for drinking and swimming by not polluting groundwater, and recycle human waste into safe, usable soil. And because their aerobic decomposition produces no sewer gases, they are odor-free! Installation directly into the bathroom is a snap because no water connection is required. Everything for installation and start up, including the vent stack, is included. Great for use in homes, cottages, weekend cabins, pool houses, barns, stables, workshops, or off-grid applications - anywhere you want to minimize your ecological footprint. Real Goods has sold thousands of Sun-Mars with almost universal satisfaction. NSF/ANSI certified. Five year parts-replacement warranty.

This product is shipped directly from the manufacturer or distributor and will arrive separately from any other products ordered. Availability estimates are based on average lead times and can vary due to stock status and location.

Returns & Replacements
Products can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns are paid for by customer unless product is defective or damaged, in which case Real Goods assumes responsibility. Please use Fedex, UPS, or USPS with tracking, for returns.

Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 20%. Freight shipping is non-refundable.


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