Description

Sun-Mar Excel Self-Contained Composting Toilet — NSF Certified, High Capacity Bio-Drum

Product Description

The Sun-Mar Excel is the best-selling composting toilet in North America — and it's earned that title. Built around Sun-Mar's proven Bio-Drum™ technology, the Excel is a high-capacity, self-contained unit that is simple to operate, virtually odorless, and reliable enough for year-round residential use. It was the first self-contained composting toilet ever to receive NSF certification, a distinction that still sets it apart. Whether you're outfitting a full-time residence, a cottage, a cabin, or a workshop, the Excel is engineered to handle the load.

• Bio-Drum™ Technology — Sun-Mar's patented rotating drum design accelerates composting, keeps the process aerobic, and makes the system easy to manage without technical expertise.
• Built-In Heating Element — An integrated 250W heater assists with evaporation, keeping the composting chamber at optimal conditions and preventing liquid accumulation.
• Fan-Assisted Odorless Operation — A 35W fan creates continuous negative pressure inside the unit, drawing air through the composting chamber and venting it out — eliminating odors at the source.
• NSF Certified — The Excel was the first self-contained composting toilet to receive National Sanitation Foundation (NSF) certification, providing the highest standard of independent verification for composting toilet performance.
• High Capacity for Residential or Seasonal Use — Accommodates up to 3 adults (or families of 5) for continuous residential use, and up to 6 adults (or families of 8) for seasonal or vacation use.
• Versatile Installation — Suitable for cabins, cottages, homes, yurts, pool houses, cabanas, bunkies, camps, treehouses, and workshops.
• 3-Year Parts Warranty — All Sun-Mar composting toilets are backed by a 3-year warranty on parts.

Specifications

FAQs

Q: Is the Sun-Mar Excel suitable for full-time residential use? A: Yes. The Excel is designed for continuous residential use, accommodating up to 3 adults or families of 5 per day. For seasonal or vacation properties, capacity increases to 6 adults or families of 8.

Q: Does the Excel require electricity to operate? A: Yes. Electricity must be connected while the unit is in use for proper operation. The fan draws 35W continuously, and the thermostat-controlled heater draws up to 250W when active, with an average draw of approximately 150W.

Q: Does the Excel produce odors? A: No — when properly vented, the built-in fan creates continuous negative pressure that draws air through the composting chamber and exhausts it via the vent pipe, preventing odors from entering the room.

Q: What kind of venting does the Excel require? A: The Excel requires a 2" thin-wall PVC vent pipe. All Sun-Mar composting toilets must be properly vented per the guidelines in the unit's owner's manual.

Q: What certifications does the Excel hold? A: The Excel was the first self-contained composting toilet ever to be certified by the National Sanitation Foundation (NSF), setting the benchmark for composting toilet performance and safety.

Q: What is the warranty on the Sun-Mar Excel? A: All Sun-Mar composting toilets come with a 3-year warranty on parts.