Wolf NK/NU/NU-1-20 oil/gas boiler, 17–20 kW

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

NK/NU/NU-1-20 – 17–20 kW oil/gas boiler body. Identified based on the original data plate, the floor-standing appliance is designed for conventional central heating, with a suitable burner and control system.

• 17–20 kW heat output range: value on the data plate; the actual set output depends on the burner matching.
• 51 liters boiler water capacity: data for the specific model; the water capacity of another NK/NU unit does not apply to it.
• 3 bar permitted operating overpressure: the system pressure must be adapted to this.
• 110 °C permitted supply temperature limit: this does not mean that the boiler must be operated continuously at this temperature.
• Oil/gas boiler body: gas operation requires an appropriate 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 has been found as series material; matching 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; optional items such as the control module, connection kit, and flue gas system must be clarified separately. Not the full installed boiler house price; delivery to Hungary must be agreed upon separately. Price source.

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