A workshop and garage heater is a form of space heater that is designed to keep a designated unit or area heated. There are three different types: Unit Heater - these heaters are able to create large amounts of heat and are commonly found in large garages, workshops, and warehouses. Contractor & Portable Heaters - are designed for easy transportation as they have built in handles and cord storage space. Radiant Heater - uses a reflector that directs infrared radiation away from it. This heater is designed to not heat up the air like other heaters but people and objects.