Wood stove furnace BURNiT NWB 45, 40kW
Burnit NWB is a steel Wood Stove Furnace with a power range from 25 to 45 kW, designed for efficient and reliable heating of residential and commercial buildings using firewood and coal.
- Stock: In Stock
- Brand: BURNiT
- SKU: 08.438.062
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Reliable and efficient heating with Wood Stove Furnaces
Burnit NWB – 40 kW

The Burnit NWB series consists of steel hot-water Wood Stove Furnaces designed for operation in closed heating systems with forced circulation. The furnaces are engineered for efficient combustion of firewood and coal, providing stable heat output and long service life.
Thanks to the wide power range, Burnit NWB furnaces are suitable for heating single-family and multi-family houses, villas, administrative, commercial, and industrial buildings.
The series includes several models with different power outputs, allowing optimal selection according to the specific requirements of the building.
Burnit NWB 25 – 20 kW Burnit NWB 35 – 30 kW
Burnit NWB 30 – 25 kW Burnit NWB 45 – 40 kW
Reliable and durable steel construction
Stable operation under various load conditions
Suitable for a wide range of heated areas
Low investment cost relative to heating output
Main advantages of BURNiT NWB
Robust steel construction
Ensures long service life and high resistance to thermal and mechanical stress.
Optimized heat exchange
The water jacket fully surrounds the combustion chamber, ensuring efficient heat absorption and even heating.
Convenient loading
The large door and spacious combustion chamber allow easy loading of firewood and coal.
Mechanical draft control
Precise control of the combustion process via a thermostatic regulator, ensuring economical and stable operation.
Fuel flexibility
The furnace operates with various types of solid fuel and can optionally be equipped with an additional burner.
Suitable for medium and large heating systems
An ideal solution for heating small and medium-sized homes, as well as larger commercial and industrial facilities.
Structural components

1 – Temperature indicator
2 – Casing
3 – High-efficiency insulation
4 – Safety heat exchanger /WBS model only/
5 – Three-pass flue gas path
6 – Water jacket
7 – Combustion chamber
8 – Metal grate
9 – Ash and soot container
10 – Burner flange (optional)
11 – Chimney
12 – Hot water outlet
13 – Thermostatic draft regulator
14 – Air inlet flap
| Characteristics | |
| Weight (kg) | 310.00 |
| Country of Manufacture | Bulgaria |
| Dimension Depth (mm) | 930 |
| Dimension Width (mm) | 624 |
| Dimension Height (mm) | 1125 |
| Warranty | 2 Years |
| Energy efficiency class | A |
| Flue (mm) | 180 |
| Exhaust Location | Back side |
| Nominal heat output (kW) | 40 |
| Construction material | Steel |
| Cold water inlet | 1 1/4" |
| Hot water outlet | 1 1/4" |
| Heating type | Hydro - Radiator |
| Placement | Center |
| Loading door size (Height, Width), mm | 500 |
| Flue damper | Yes |