Wolf NK/NU 20 oil/gas boiler, 17–20 kW

WOLF – premium German heating technology. The manufacturer from Mainburg produces boilers, controllers, and HVAC systems.

NK/NU 20 – 17–20 kW oil/gas boiler body. Identified based on the original data plate, the floor-standing appliance can be designed for conventional central heating with a suitable burner and controls.

• 17–20 kW heat output range: value from the data plate; the actual set output depends on burner matching.
• 60-liter boiler water capacity: data of the specific model; the water capacity of another NK/NU unit is not applied to it.
• 3 bar permitted operating overpressure: the system pressure must be matched to this.
• 110 °C permitted flow temperature limit: does not mean the boiler must be operated continuously at this temperature.
• Oil/gas boiler body: gas operation requires a suitable gas burner; the boiler body designation does not prove the presence of two types of burners.

Documentation: the WOLF 30 43 000 factory steel boiler manual series found; compliance with the specific model and burner is required. The factory series manual is available online. The scope of delivery for the burner, controller, pumps, and hot water storage tank is defined in the specific offer.

New comparison price: heizungsdiscount24.de, WOLF ComfortLine COB-2-20 B30, 8909299: 3,898.00 EUR gross, 19% German VAT; calculated net 3,275.63 EUR. Verification: 2026.10.06. Different, modern condensing oil boiler, not the exact new price of the offered type. The displayed base price applies to the boiler and oil burner; the control module, connection set, and flue gas extraction optional items must be clarified separately. Not a complete installed boiler house price; transport within Hungary must be agreed upon separately. Price source.

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