Product Info Catalog Contractor PROPANE TORPEDO HEATER 125,000 BTU PROPANE TORPEDO HEATER 125,000 BTU Manufacturer: Duraheat Description The DuraHeat GFA125A forced air propane heater features 125,000 BTU's of heating to effectively warm up to 3200 sq. ft. of space. This heater is ideal for large worksites. Rates Please contact us for current pricing and availability. Request Availability