Geothermal heat pump S1156 PC

residentialfor indoor installationsplit

Product overview
The NIBE S1156 PC is an inverter-controlled ground source heat pump with integrated passive cooling and a separate hot water tank. The separate tank construction allows installation in locations with limited ceiling height. The unit automatically adapts to the building's heating demand and is available in output sizes from 1.5 to 8 kW.

Performance and efficiency
The NIBE S1156 PC achieves a seasonal coefficient of performance (SCOP) of up to 5.95. It uses a newer, more climate-friendly refrigerant. After connecting a separate hot water tank of the required size, the system supplies domestic hot water with high performance. Output range: 1.5–8 kW.

Connectivity and controls
The heat pump includes integrated Wi‑Fi and supports wireless accessories. It features a user-friendly touchscreen and can be controlled or monitored via smartphone or tablet using the myUplink platform.

Applications and installation
Designed for low noise levels and suitable for both new builds and replacements of existing heat sources. The separate hot water tank enables flexible placement and sizing according to hot water requirements. Compact footprint: height 1500 mm, width 600 mm, depth 620 mm.

Key benefits

• High customization: inverter technology and separate hot water tank for flexible system design.
• Efficient performance: modern refrigerant, wide output range and designed for low noise operation.
• Comfort and control: touchscreen, wireless accessories and integrated Wi‑Fi for remote management.

Accessories (examples)

• NIBE ELK 26 — Back-up electric immersion heater, 26 kW.
• NIBE ELK 42 — Back-up electric immersion heater, 42 kW.
• NIBE PVT — Enables use of NIBE PVT panels as a heat source; regulates incoming brine temperature and integrates PV‑T collectors.
• NIBE SOLAR 40 / NIBE SOLAR 42 — Enables solar heating integration with the heat pump.
• NIBE THS 10 — Wireless temperature and humidity sensor for myUplink; battery powered.
• NIBE FLM / NIBE FLM S45 — Exhaust air modules with built-in fan for combining mechanical exhaust air recycling with a ground source heat pump.
• NIBE ROT 10 — Wireless room thermostat for temperature control via display or myUplink app.
• NIBE ELK 213 / ELK 213 EXP — Supplementary electric heat sources up to 13 kW with multi-stage control and safety features.
• NIBE NV 10 — Level monitor of brine collector circuit.
• NIBE KB 25 — Filling connection for brine, including insulation (for heat pumps max. 13 kW).
• NIBE POOL 40 — Accessory for integrating pool heating into the ground source heat pump system.
• NIBE RMU S40 — Room unit with 2.8” touch display, temperature and humidity sensors for remote control/monitoring.
• NIBE PV — Modular solar package (4 / 8 / 12 / 16 / 20 kW basic sizes) with monocrystalline panels and inverter.
• NIBE AXC 40 — Accessory card for enabling connections and control of mixing valves, external pumps, and additional heat.
• NIBE EF 45 — Extension frame.
• NIBE HR / HR 10 / HR 20 — Auxiliary relay and related modules.
• NIBE HTS 40 — Accessory that records humidity and temperature.
• NIBE ECS 40 / ECS 41 — Kits for installations requiring multiple climate systems or additional heating circuits.

Technical specifications

• Model series / designation: S1156 PC
• Available output size: 1.5–8 kW
• Seasonal coefficient of performance (SCOP): up to 5.95
• Height: 1500 mm
• Width: 600 mm
• Depth: 620 mm
• Net weight: 171 kg
• 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+++
• Refrigerant amount, CO2 equivalent: 0.54 ton
• Integrated features: inverter control, passive cooling, integrated Wi‑Fi, support for wireless accessories
• Hot water: separate hot water tank (chosen according to hot water requirements)
• Design emphasis: low noise levels, suitable for new builds and replacements