Sun-Mar Excel Composting Toilet (120v)

Sun-Mar Excel Composting Toilet

The Excel is the best-selling Sun-Mar unit in North America—and for good reason. It is a high-capacity Bio-drum toilet that is extremely simple to operate, features proven technology, and is highly reliable.

The Excel has enough capacity to be used virtually anywhere: in residences, barns, and cottages. This system can also be converted to an AC/DC system using the AC/DC kit (sold separately).

Composting Capacity

• Residential Use: 3 adults or family of 5
• Weekend/Vacation Use: 6 adults or family of 8

Key Features & Performance

• First self-contained composting toilet certified by the National Sanitation Foundation (NSF)
• Tested for 6 continuous months at maximum capacity with no odor and clean, safe compost
• Only Sun-Mar self-contained units are listed for residential and cottage use under NSF Standard #41, the strictest composting performance standard in the world
• 2" vent attaches at the top rear of the unit; can be installed invisibly through a wall to the outside
• Sturdy detachable footrest for comfort; easily removed to access the finishing drawer
• Normally evaporates all liquids under typical use
• 1" emergency drain at the rear for heavy residential use or prolonged power outages

The Excel’s proven reliability, high capacity, and NSF certification make it the gold standard for self-contained composting toilets.