The Premier 80DF heater offers the ultimate in efficient portable heat. For easy and reliable operation, all models feature solid-state electronic ignition for sure starts, as well as thermostatic control for automatic operation and consistent temperature management. Durable components, sturdy design, and quality manufacturing add up to a reliable performance for years of rough and heavy operation. The heater can be ducted, and run inside or outside your structure, and includes an enclosed flame for safety.