Composting Toilet Selection Guide

Self-Contained Units

Self-Contained Units	Model	Residential or Continuous Use Capacity*	Weekend or Vacation Use Capacity*	Water?	Electric?
	Excel	3 Adults or Family of 4	6 Adults or Family of 8	Waterless	Electric
	Excel NE	2 Adults or Family of 3	5 Adults or Family of 7	Waterless	Non-Electric
	Excel AC/DC	Electric: 3 Adults or Family of 4 Non-Electric: 2 Adults or Family of 3	Electric: 6 Adults or Family of 8 Non-Electric: 5 Adults or Family of 7	Waterless	Combination Electric (AC) or Non-Electric (DC) Unit
	Compact	1 Adult or Family of 2	3 Adults or Family of 4	Waterless	Electric
	Spacesaver	1 Adult or Family of 2	3 Adults or Family of 4	Waterless	Electric
	Mobile (For use on Boats & RV's)	1 Adult or Family of 2	3 Adults or Family of 4	Waterless	Your choice of Electric (AC) or Non-Electric (DC) Unit
	Marinized Excel (For use on Boats & RV's)	3 Adults or Family of 4	6 Adults or Family of 8	Waterless	Electric
*Family numbers include both adults and small children.

Central Systems

Central Systems	Model	Residential or Continuous Use Capacity*	Weekend or Vacation Use Capacity*	Water?	Electric?	Type of Toilet Needed	Is More Than 1 Toilet Possible?
	Centrex 1000	Not Recommended	5 Adults or Family of 7	Water Flush	Electric	Model 510+ or Model 511+	Yes
	Centrex 1000 NE	Not Recommended	4 Adults or Family of 6	Water Flush	Non-Electric	Model 510+ or Model 511+	Yes
	Centrex 1000 AC/DC	Not Recommended	Electric: 5 Adults or Family of 7 Non-Electric: 4 Adults or Family of 6	Water Flush	Combination Electric (AC) or Non-Electric (DC) Unit	Model 510+ or Model 511+	Yes
	Centrex 2000	4 Adults or Family of 6	7 Adults or Family of 9	Water Flush	Electric	Model 510+ or Model 511+	Yes
	Centrex 2000 NE	3 Adults or Family of 5	6 Adults or Family of 8	Water Flush	Non-Electric	Model 510+ or Model 511+	Yes
	Centrex 2000 AC/DC	Electric: 4 Adults or Family of 6 Non-Electric: 3 Adults or Family of 5	Electric: 7 Adults or Family of 9 Non-Electric: 6 Adults or Family of 8	Water Flush	Combination Electric (AC) or Non-Electric (DC) Unit	Model 510+ or Model 511+	Yes
	Centrex 2000 AF	4 Adults or Family of 6	6 Adults or Family of 8	Waterless	Electric	Dry Toilet	No
	Centrex 2000 AF NE	3 Adults or Family of 5	5 Adults or Family of 7	Waterless	Non-Electric	Dry Toilet	No
	Centrex 2000 AF AC/DC	Electric: 4 Adults or Family of 6 Non-Electric: 3 Adults or Family of 5	Electric: 6 Adults or Family of 8 Non-Electric: 5 Adults or Family of 7	Waterless	Combination Electric (AC) or Non-Electric (DC) Unit	Dry Toilet	No
	Centrex 3000	6 Adults or Family of 8	9 Adults or Family of 11	Water Flush	Electric	Model 510+ or Model 511+	Yes
	Centrex 3000 NE	5 Adults or Family of 7	8 Adults or Family of 10	Water Flush	Non-Electric	Model 510+ or Model 511+	Yes
	Centrex 3000 AC/DC	Electric: 6 Adults or Family of 8 Non-Electric: 5 Adults or Family of 7	Electric: 9 Adults or Family of 11 Non-Electric: 8 Adults or Family of 10	Water Flush	Combination Electric (AC) or Non-Electric (DC) Unit	Model 510+ or Model 511+	Yes
	Centrex 3000 AF	5 Adults or Family of 7	8 Adults or Family of 10	Waterless	Electric	Dry Toilet	No
	Centrex 3000 AF NE	5 Adults or Family of 7	7 Adults or Family of 9	Waterless	Non-Electric	Dry Toilet	No
	Centrex 3000 AF AC/DC	Electric: 5 Adults or Family of 7 Non-Electric: 5 Adults or Family of 7	Electric: 8 Adults or Family of 10 Non-Electric: 7 Adults or Family of 9	Waterless	Combination Electric (AC) or Non-Electric (DC) Unit	Dry Toilet	No
*Family numbers include both adults and small children.