Coleman 3500 Btu Heater

The Coleman 3500 BTU catalytic heater (often Model 512A) is a vintage, gasoline-powered portable heater designed for camping and outdoor use. It produces flameless heat using white gas/Coleman fuel, typically running for 18–20 hours per filling. These units are known for their durability but are no longer manufactured, making them popular collectors' items. Key Features & Usage: Heat Output: 3,500 BTU, ideal for small spaces or taking the chill off in tents. Fuel Type: Specifically designed for Coleman camp fuel (white gas). Operation: Features a catalytic element that glows to produce flameless heat. Design: Often features a green metal fuel tank with a steel wire mesh top. Safety Notice: These units can get very hot and should be placed on a non-flammable surface. They require oxygen to operate, so proper ventilation is necessary. Common models from the 1960s and 1970s, such as the 512A, are often found on secondary markets like ebay

Condition

Used (normal wear)

Brand

Coleman