PetSafe heated beds are designed to deliver continuous low levels of heat to supplement a pet’s body heat. These low levels of heat enable the pet to enjoy using the heater for several hours at a time. Do not expect these products to feel warm to the touch.
To test the unit:
Plug the unit into a working standard wall outlet
Wrap the bed in a blanket. This is to capture heat that is produced.
Allow the unit to remain on for 30 minutes
When you place your hand between the blanket and the heater, you should feel the warmth generated by the heater letting you know the unit is working.