Geothermal heat pump S1256 PC

commercialresidentialsplit

Product overview
NIBE S1256 PC is an inverter-controlled ground source heat pump with integrated passive cooling and a built-in hot water tank using a climate-friendly refrigerant. It automatically adapts compressor output to actual heating demand to minimize energy use and is designed for low-noise operation. Suitable for new buildings and replacement of existing heat sources.

Performance and comfort

• High seasonal coefficient of performance (SCOP) up to 5.95 for low operating costs.
• Integrated 178 L hot water tank providing high domestic hot water capacity.
• Integrated passive cooling for summer comfort without active refrigeration.
• Engineered for low noise emissions to suit residential and commercial installations.
• Single variant covering nominal output range 1.5–8 kW.
• Integrated Wi‑Fi and compatibility with wireless accessories; remote control and monitoring via phone or tablet.
• User-friendly touchscreen interface and energy-saving smart control logic.

Key selling points

• Integrated solution: heat pump with built-in hot water tank and passive cooling.
• Efficient and climate‑friendlier refrigerant with high hot water capacity and low noise level.
• Smart operation: touchscreen, wireless accessories and integrated connectivity for system monitoring and control.

Accessories (examples)

• NIBE BAU 40 (wall console)
• NIBE EF 45 (extension frame)
• NIBE CDS 10 (wireless CO2/temperature/humidity sensor)
• NIBE ELK 213 / ELK 213 EXP (supplementary electric heater)
• NIBE AXC 40 (accessory card)
• NIBE FLM S45 (exhaust air module)
• NIBE ELK 15 (three‑phase back‑up electric immersion heater)
• NIBE HR 20, HR 10, NV 10, KB 25 and other system and installation accessories

Technical specifications

• Height (mm): 1800
• Width (mm): 600
• Depth (mm): 620
• Net weight (kg): 217
• 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): 178
• Refrigerant amount, CO2 equivalent (ton): 0.54
• Declared tap profile: XL