Desa Heating’s Pro-Tough series of portable force air heaters are designed to be professional-grade, workspace-friendly. The lightweight and quiet heater works with a variety of fuel options including kerosene, diesel, jet fuel and fuel oil. The Pro-Tough series is also easy to transport and reduces the risk of work-related injuries or back pain from carrying, lifting or maneuvering the heater. The heavy-duty, wheelbarrow-inspired design features ergonomic handles and a single 10-inch pneumatic tire, making it easy to transport. The Pro-Tough series, which operates 15 percent quieter than older models, includes a 13.5-gallon fuel tank for extended running times before refueling. The tank allows the 100,000 Btu model to run for up to 18 hours and heat 2,400 square feet of space. The series also includes models in the 150,000 and 200,000 Btu output range for heavy-duty heating needs.