KWB Multifire 100 kW

KWB – premium Austrian biomass heating

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

Multifire 100 – heating with wood chips or pellets

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

Key benefits

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

Important factory data

• Wood chip nominal heat output: 99 kW for the W33 variant listed in the catalog.
• Factory part-load point: 27.6 kW; nominal efficiency: 91.1%.
• 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 100 ESP, 14711ESPL: 32,036.50 EUR gross (19% German VAT; calculated net: 26,921.43 EUR). Heizung-billiger, verified: October 5, 2026. A new boiler with a left-hand stoker, electrostatic particulate separator, and integrated return temperature booster. Complete storage extraction and installation are separate system costs; delivery to Hungary is subject to separate agreement.

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

Technical source: KWB Multifire factory planning brochure.

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 heaters, Hot water storage tanks, Measuring instruments, Oil boilers, Pellet boilers, Pumps, Expansion vessels, Fan heaters, Multi-fuel boilers, Controls, Water treatment.

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