Excel Electric, Non-Electric & Dual Voltage Models Electric Long considered the standard in composting toilet performance, the EXCEL is the preferred self-contained electric model for heavy or residential use. Composting speed and capacity on this unit is outstanding! The large Bio-drum engineered into the Excel gives it twice the capacity of the Compact.

The Excel has been successfully tested by the National Sanitation Foundation for six continuous months at its maximum residential capacity of four adults. Key criteria were that the unit operated odorlessly, and produced a clean dry compost. For weekend and vacation use the capacity is 6-8 people, and even these numbers can be doubled for short periods. The 2" vent is attached at the top rear of the unit and can be installed invisibly by running it through the wall and up the outside wall. For comfort, the Excel has a detachable footrest which can be removed to pull out the finishing drawer.

Although the Excel can normally evaporate all liquids, a 1¦2" emergency drain is fitted at the rear and this should be connected if the unit is to be used residentially or heavily, or if prolonged power outages are expected.

Excel Electric Specifications:

Non-Electric Model

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 1.9 watts and can be powered by a solar panel and 12 volt battery. The fan should also be installed if there is to be any bends in the vent stack, as the "chimney effect" is negated by a bend.

Evaporating capacity on the Excel NE is variable, so the 1" drain at the rear should be connected to an approved drain pit, container, or other facility.
Excel Non- Electric Specifications

RV or Marine Mobile Models: Eco-Let

Warranty And Certifications

How Sun Mar Composting Toilets Work

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