TECHNICAL ADVICE
Expert on oil heaters – example: Master BV691
Expert in technical support and fuel logistics
Author:Zespół techniczny pozyczmnie.pl
Reviewed by:REKORD HALE NAMIOTOWE SP. Z O.O.
Updated:23 March 2026
For large volumes such as tent halls, temporary warehouses or facilities under construction, three things are key: power, reliability and heating speed. That's why in practice we very often use indirect oil heaters such as Master BV691.
Why this type of heater?
BV691 is a 225 kW device that really handles situations where smaller units are just an addition. With air flow of around 12,500 m³/h, we can quickly raise temperature in large, difficult-to-heat spaces.
Power
225 kW
Air flow
12,500 m³/h
Indirect heating – key difference
It's very important that we're talking about a heater with indirect heating. Exhaust gases are expelled outside, and only clean, heated air enters the interior. This allows using such devices in work halls, warehouses or facilities where people are present.
Advantages of indirect heating:
- • Exhaust gases expelled outside
- • Clean, heated air in room
- • Safe for people and processes
- • Possibility of use in work halls
Where does such solution make the most sense?
We most often use them for heating tent halls, construction site facilities, temporary warehouses and industrial facilities in winter. They also work well during sudden temperature drops, when quick reaction and reliability matter.
Main applications
- • Tent halls
- • Construction site facilities
- • Temporary warehouses
- • Industrial facilities
Special situations
- • Winter period
- • Sudden temperature drops
- • Quick reaction required
- • Reliability of operation
What determines effectiveness in practice?
The heater itself is one thing, but equally important is proper selection of number of units, air distribution and fuel logistics. Poorly selected configuration can waste potential of even the best equipment.
Key elements of effective configuration:
Number of units
Proper selection of heater quantity to volume
Air distribution
Even distribution of warm air
Fuel logistics
Ensuring supply continuity
Need heating for hall, construction or temporary facility?
We will select appropriate heater configuration – from single units to complete heating systems with air distribution and fuel logistics.