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Sunmar Excel Non-Electric Composting Toilet

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  • Regular price $1,730.00
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Rated for five adults (or a family of 7 including adults and small children).

The success of the Excel design meant that a three chamber unit could be specifically designed for those with no continuous 110 Volt supply. First launched in 1981, the Excel NE has long been the standard toilet for those living off the grid. A 1998 redesign gave the unit a rounded look, and recessed the drum handle.

The Excel NE has no fan or heater. Odorless operation is achieved by a 4" vent mounted at the top rear of the unit which acts like a chimney on a wood stove. For good air movement the vent should be as close to vertical as possible.

If the Excel NE is used residentially or heavily, or is in a place which is subject to downdraft, an optional 12 Volt fan should be installed in the vent stack. This fan draws 1.4 Watts and can be powered by a solar panel and/or 12 Volt battery.

Like the Excel, all components have been continuously redesigned and improved over the years.

Our Promise To You.

If it is for sale in our store -- it is because we use it and love it!

We are happy to share our experiences with these tools which may enhance your own. Given care, maintenance, and love, each of these fine tools is capable of lasting a lifetime. We do limit warranties to those offered by our supplying manufacturers. If ever you have a question or concern regarding any of the tools we sell, please let us know.

Online. On Campus. On The Job Site.

These tools, toys and supplies are in constant use by our students, timber framing crews, and family. At Shelter Tools, we have a working knowledge of every product we sell. Graduates will find particular items recommended in class and on site.


If you don't see the tools or items you need, we can find it for you. Write us or call us anytime.