Heat Without the Hazards

When you’re running an event, working in a warehouse, or managing a busy construction site, the last thing you want is fumes in your air. The Master BV77 Indirect Space Heater gives you 100% clean, fume-free warm air — so you can heat enclosed areas safely and confidently.

Power That Works as Hard as You Do

With 21kW of heating power and airflow of 1550 m³/h, this heater quickly fills large spaces with reliable warmth. Its 36-litre tank offers up to 19 hours of runtime, so your team or guests stay comfortable without constant interruptions for refuelling.

Built for the Toughest Environments

Events, farms, workshops, or construction sites — the BV77 is designed to thrive where ordinary heaters fail. A stainless steel combustion chamber, heavy-duty casing, and thermally protected motor make it rugged, reliable, and ready for daily use.

Flexible & Portable by Design

Mounted on a robust trolley frame with large wheels, this heater is easy to transport, position, and reposition whenever you need. You can attach ducting to direct warm air exactly where it’s required, while exhaust gases are safely vented away through the flue system.

Smarter Heating, Less Waste

Connect an optional thermostat to set your ideal temperature. The BV77 will automatically adjust, saving fuel while keeping conditions comfortable. With dual-voltage capability, it can run on 240V or switch to 110V for use on construction sites.