Full-time use - Use in a full-time residence or use as a primary toilet for more than 5 consecutive days.

Fully Automatic - These units are equipped with a thermostatically controlled heater, fan, and mixer that automatically mixes each time the seat is lowered.

Part-time use - Use in an application other than full-time residence where the toilet will be the primary toilet for fewer than 5 consecutive days or less than 10 hours per day.

Semi-Automatic - This unit is equipped with a thermostatically controlled heater, fan, and manual mixer that is turned a couple of times after each use.