Geothermal heat pump F1253

commercialresidentialsplit

Product information
NIBE F1253 is an inverter-controlled ground-source heat pump with an integrated 180 L water heater. The unit adapts automatically to varying heating demand, offering high seasonal performance and low operating costs. Available in nominal output sizes of 4 kW and 6 kW, the F1253 is designed for efficient space heating and domestic hot water production in residential and light commercial installations.

Key features

• Inverter-controlled ground-source heat pump with integrated water heater (180 L)
• Available outputs: 4 kW and 6 kW
• High seasonal performance factor for reduced energy consumption
• Smart, energy-saving control system with user-friendly interface and connectivity options

Accessories

• NIBE HR 10: Auxiliary relay connection box with contactor and rotary selector for control of external 1‑ to 3‑phase loads (oil burners, immersion heaters, pumps).
• NIBE HTS 40: Sensor accessory for humidity and temperature measurement.
• NIBE ACS 45: 4-pipe passive/active cooling accessory for integration of cooling circuits.
• NIBE BAU 40: Wall console for secure wall mounting.
• NIBE AXC 40: Interface card for connection and control of mixing-valve controlled additional heat, domestic hot water circulation pump and groundwater pump.
• NIBE EME 10: Accessory to optimise use of self-generated solar electricity.
• NIBE FLM: Exhaust-air module with integrated fan for combining mechanical exhaust air recovery with a ground-source heat pump to provide integrated ventilation, hot water and heating.
• NIBE EMK 300: Energy metering accessory for measuring delivered energy (flow and temperature difference).
• NIBE FLM S45: Exhaust-air module with fan for combined recycling with ground-source heat pump.
• NIBE HR 20: Auxiliary relay (accessory).
• NIBE PCM S40: Ground-source accessory for passive cooling using rock, groundwater or surface collectors.
• NIBE KB 25: Brine filling connection with insulation for heat pumps up to 13 kW.
• NIBE ECS 41: Kit to add one or more additional heating circuits with different supply temperatures (shunt valve, pump, sensors).
• NIBE PCS 44: Passive cooling accessory for installations using passive cooling.
• NIBE ECS 40: Kit for systems with up to four different climate circuits requiring different flow temperatures.
• NIBE POOL 40: Complete solution to integrate pool heating into a NIBE ground-source system (includes AXC module, motorised 3-way valve and pool sensors).
• NIBE RMU 40: Remote control/monitoring unit for operation from another room.
• NIBE MODBUS 40: Enables control and monitoring by external Modbus-equipped systems.
• NIBE TSS 20 Base kit: Temperature sensor kit (accessory).
• NIBE PV: Integrated modular solar package (panels, inverter, communication module) for connection to the heat pump.
• NIBE RTS 40: Room sensor for improved indoor temperature regulation with display and setpoint functions.

Technical specifications

• Height (mm): 1800
• Width (mm): 600
• Depth (mm): 620
• Net weight (kg): 200
• Product efficiency class (room heating, 35 °C): A+++
• Product efficiency class (room heating, 55 °C): A+++
• System efficiency class (room heating, 55 °C): A+++
• System efficiency class (room heating, 35 °C): A+++
• Efficiency class (water heating): A
• Volume water heater (l): 180
• Refrigerant amount, CO2 equivalent (ton): 2.06
• Declared tap profile: XL
• Amount of hot water 40 °C (l): 245