Sun-Mar Excel Composting Toilet CSEL-01001W

Sun-Mar Excel Composting Toilet CSEL-01001W

SKU: CSEL-01001W

$2,229.00

The Sun-Mar Excel is the best-selling composting toilet in North America, designed for high-capacity residential use where reliability, safety, and ease of operation are essential. Built around Sun-Mar’s proven Bio-Drum technology, it delivers consistent performance for everyday living, off-grid homes, and eco-conscious installations.

As the world’s first NSF-certified self-contained composting toilet, the Sun-Mar Excel sets the industry benchmark for safety and sanitation. It is widely trusted for use in homes, cabins, cottages, tiny houses, workshops, camps, and remote residences.

Odorless operation is ensured by an integrated electric fan and a thermostat-controlled heater, creating a clean, comfortable bathroom environment with minimal maintenance requirements.

Composting Capacity
For residential use, the system comfortably supports 3 full-time adults or a family of up to 5. For weekend or vacation use, it accommodates up to 6 adults or a family of 8 with ease.

What’s Included
The package includes the Sun-Mar Excel composting toilet unit, a 4" vent kit with external vent cap, 110V electrical connection kit, peat moss starter supply, complete installation hardware, a comprehensive user manual, warranty documentation, and access to customer support.

NSF Certified Performance
The Sun-Mar Excel is certified to NSF Standard 41 by the National Sanitation Foundation, the most rigorous composting toilet performance standard worldwide. During testing at maximum capacity over six continuous months, the unit produced no odor and resulted in clean, safe compost. It remains the only self-contained composting toilet listed by NSF for residential and cottage use, ensuring verified safety, hygiene, and long-term reliability.

Installation & Operation
The 2" vent is positioned at the top rear of the unit and can be discreetly routed through the wall and up the exterior for a clean installation. During normal operation, all liquids are evaporated internally. An emergency 1" drain is located at the rear and should be connected for heavy residential use or in locations where extended power outages may occur.

A sturdy, removable footrest allows convenient access to the finishing drawer, making maintenance clean and straightforward. The system can also be converted to AC/DC operation using the optional AC/DC kit, sold separately.

Specifications

Dimensions (W × D × H): 22" × 33" × 28"
Weight: 75 lbs
User Capacity: 3 full-time users or 6 part-time users
Power Requirement: 110V, 150W average, 2.4A max
Fan: 35W continuous
Heater: 250W thermostat-controlled
Emptying Frequency: Every 3–4 months (based on 3 users)
Certification: NSF Standard 41
Warranty: 3-year parts warranty, 25-year bowl warranty
Shipping: Free shipping to the lower 48 states

Why Choose the Sun-Mar Excel
Industry-leading NSF-certified safety, completely odorless operation, high capacity for residential or off-grid living, energy-efficient performance with low power consumption, minimal maintenance with long emptying intervals, and an all-inclusive installation package designed for long-term reliability.

This item ships directly from our manufacturing or fulfillment partner. Shipping methods and delivery timelines vary based on product size, destination, and production requirements. Orders may ship via parcel or freight delivery, depending on the item. Estimated delivery times are provided once the order ships and are not guaranteed. Tracking information will be sent via email as soon as your order is on its way. For full details, please refer to our Shipping Policy.

Warranty coverage is provided directly by the product’s manufacturer and applies to defects in materials or workmanship under normal, intended use. Coverage terms, conditions, and duration may vary by product. Warranty does not cover normal wear and tear, improper installation, misuse, lack of maintenance, environmental damage, unauthorized modifications, or non-standard or long-term installations. To initiate a warranty claim, please contact us at support@theluxeoutpost.com with proof of purchase and supporting documentation. Final determination and resolution are subject to manufacturer approval. For full details, please refer to our Manufacturer Warranty.

Due to the nature of our products, return eligibility may vary based on item type and order status. Where applicable, return requests must be submitted within 30 days of delivery. Items must be unused, uninstalled, and returned in original packaging with all accessories included. Certain items, including made-to-order, customized, installed, or used products, may be final sale and not eligible for return. Return authorization is required prior to sending any item back. Restocking fees and return shipping costs may apply. For full details, please refer to our Return & Refund Policy.

Description

Odorless operation is ensured by an integrated electric fan and a thermostat-controlled heater, creating a clean, comfortable bathroom environment with minimal maintenance requirements.

Specifications