KWB Multifire 20-80 kW

KWB – premium Austrian biomass heating

Founded in 1994, the premium Austrian manufacturer KWB specializes in wood-based heating systems. Its Multifire boilers allow the use of both wood chips and pellets.

Multifire 80 – heating with wood chips or pellets

80 kW power class biomass boiler for heat supply to larger buildings, industrial sites, and agricultural facilities. The two types of fuel allow flexible procurement.

Key benefits

• Lambda and negative pressure control: the combustion process can be adapted to the fuel.
• Automatic heat exchanger cleaning: turbulators help keep the heat transfer surfaces clean.
• Automatic ash removal: augers convey the ash into the collection container.

Important factory data

• Wood chip nominal heat output: 80 kW; factory partial load point: 22.4 kW.
• Wood chip nominal efficiency: 91.3%.
• Boiler water capacity: 167 liters.
• Maximum operating pressure: 3.5 bar; boiler temperature: 65–90 °C.
• Minimum return temperature: 55 °C.

Verified new model comparison

Fröling T4e 80 ESP, 14709ESPL: 29,197.00 EUR gross (19% German VAT; calculated net: 24,535.29 EUR). Heizung-billiger, verified on: October 5, 2026. A new boiler with a left-hand stoker, electrostatic particulate filter, and integrated return temperature booster. Complete silo extraction and installation are separate system costs; delivery to Hungary is subject to separate consultation.

Comparative price of a different, newer model. Not the exact new price of the original used type.

Technical source: KWB Multifire factory design prospectus.

Brands available in the ProfiKazán range

AGRO Forst & Energietechnik, Alfa Laval, Austria Email, Binder, Biral, Buderus, Clima, Delphis-therm, EDER, Elco, Fröling, GEA, Gilles, Grundfos, Grünbeck, Guntamatic, HAPPEL / Ziehl-Abegg, Hargassner, HDG, Heizbösch, Herz, Hoval, Kampmann, Kränzle, KSB, KWB, LOOS, Lopper, Lowara, Mawera, Nolting, ORION / AL-KO, Picopello, Pneumatex, Pollhuber, Prüller, Reflex, Remeha, Ruwac, Schwank, Sieger, Siemens, Spanex, Varem, Viessmann, Wilo, Windhager, Wolf, YORK.

Heating systems and related equipment in one place

Categories in our catalog: Spare parts, Chip feeders, Wood chip boilers, Wood gasification boilers, Gas boilers, Steam boilers, Heat exchangers, Heat pumps, Infrared heaters, Industrial vacuum cleaners, Industrial cleaning machines, Warm air boilers, Hot water storage tanks, Measuring instruments, Oil boilers, Pellet boilers, Pumps, Expansion vessels, Unit heaters, Multi-fuel boilers, Controls, Water treatment.

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