The Arcotherm EC85 is a powerful indirect diesel space heater, purpose-built for heating large marquees, events, halls, workshops, and construction sites. With its 81kW heat output and 4300m³/hr airflow, this unit delivers clean, fume-free warm air, making it safe for enclosed or poorly ventilated spaces.

Thanks to its indirect combustion system, only fresh, warm air is ducted into your venue or work area, while all combustion by-products are safely vented outside via a flue. This ensures comfort and safety for staff, guests, or equipment inside the heated space.

The EC85 is designed with flexibility in mind. You can connect up to 7.6m of ducting or even a 2-way splitter, allowing you to heat multiple areas from one unit. Optional thermostats provide automated temperature control, saving fuel and reducing running costs.

Built tough for demanding conditions, the EC85 features a robust stainless-steel combustion chamber, Danfoss pump, electronic flame control, and overheat thermostat. Its large 105L fuel tank provides up to 12 hours runtime, while the Heavy Duty (HD) version offers a 135L tank and an extended 18-hour runtime, perfect for construction and site use.

For even greater efficiency, an optional air recirculation kit can cut fuel use by up to 60% by recycling previously warmed air back into the combustion chamber. Package deals are also available, combining the heater, flue, ducting, and thermostat in one convenient bundle with free delivery.

Mounted on wheels with a sturdy handle, the Arcotherm EC85 is portable, reliable, and engineered to deliver high-performance heating in the toughest environments.