Heating & Air Conditioning Heating: Propane: Ducted 80,000BTU 170,000BTU 350,000BTU Kerosene: Ducted 300,000BTU 600,000BTU Electric: 240Volt 480Volt 100,000 BTU 250,000 BTU 500,000 BTU 1,000,000 BTU 2,000,000 BTU Heating: