Snowmelting Class is a number representing the required performance of the system

Class 1 - refers to a light residential load. Choose this class if you will allow snow to build up on the zone and speed of melting is not a critical issue

Class 2 - refers to a light commercial load. Choose this class if you may allow light build of snow on the zone and need moderate snowmelting speed.

Class 3 - refers to a heavy commercial load. Choose this class if you require no build up of snow or ice on the zone. This class will keep a constant melting temperature in the slab.