S1156 Ground Source Heat Pump

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Ground Source Heat Pump

This product is Quiet Mark certified

NIBE is proud to have received Quiet Mark certification for this heat pump, recognizing its exceptional low-noise performance. Quiet Mark is an internationally recognized certification awarded to products that meet rigorous standards for noise reduction, ensuring quieter and more comfortable living environments.

Learn more about our Quiet Mark certification

Product information
Advantages

The NIBE S1156 Ground Source Heat Pump is designed to make everyday living quietly comfortable and reliably efficient. Quiet Mark certification means it runs with minimal noise, so it won’t disturb day-to-day life. With an A+++ energy rating and the naturally steady temperature of the ground, it delivers consistent warmth across the seasons, with efficiency levels up to six times that of a gas boiler.

Fitting the S1156 is straightforward and flexible. It’s available in three outputs so your installer can choose the right size for your home, and its built-in inverter technology automatically adjusts how hard it works to match your heating needs, gently increasing or decreasing output to maximise comfort. The hot water cylinder is separate from the heat pump, which is ideal for retrofit projects where a cylinder already exists or where extra hot water capacity is desired. If you’d like summer comfort too, variants with built-in passive cooling can take the edge off warmer days, providing heating in winter and gentle cooling in summer.

The S1156 is compatible with the myUplink app, so you can check in and adjust settings from your phone or tablet whenever you like. Choose a NIBE Pro installer and you’ll get an extended warranty for extra peace of mind. Additionally, the S1156 is eligible for FlexiServ; servicing carried out by NIBE’s own engineers to keep everything running smoothly.

The system also plays well with others: it can integrate with NIBE ventilation accessories, solar inverters, pools, or an additional heat source to create a complete home solution. And because it’s eligible for the £7,500 Boiler Upgrade Scheme grant, you can reduce upfront costs as you move to low-carbon heating.

Quiet Mark Certified

Quiet operation, as certified by Quiet Mark, an independent noise certification body, ensures minimal disruption to daily life and outdoor enjoyment.

A+++ energy rating

Our most efficient heat pump ever made, therefore helping to lower running costs

Compatible with NIBE's accessories and other third party inputs

Integrate with a NIBE ventilation system, solar panels, pool, additional heat source and more

Technical Data
Documents

NIBE 1156-8

NIBE S1156-13

NIBE S1156-18

NIBE ACS 45

4-Pipe Passive/Active Cooling Accessory

NIBE AXC 40

The AXC 40 is an accessory card paired with NIBE domestic Ground Source Heat Pumps such as the SXX56 range, used to control and communicate with additional systems, such as extra climate systems, shunt-controlled additional heat, step-controlled additional heat, passive cooling, active cooling, etc.

NIBE ECS 40

Allows the heat pump to control a second heating circuit (zone) with a different temperature requirement. For up to 80 m² of underfloor heating

NIBE ELK 26

Three phase back-up electric immersion heater - 26kW

NIBE ELK 42

Three phase back-up electric immersion heater - 42kW

NIBE ELK 15

Three phase back-up electric immersion heater - 15kW

NIBE PCM S40

Enable passive cooling by circulating cool brine (ground loop fluid) directly to the heating system, such as underfloor. PCM S40 is for S-Series heat pumps up to 8kW. Functionally the same as as the PCM 40, but aesthetically different to match the S-Series

NIBE CDS 10

Wireless temperature, humidity & CO₂ sensor to be paired with NIBE S-Series controllers

NIBE KB 25

Filling and flushing kit used during the installation or maintenance of a ground source heat pump system. Allows filling or topping up of the brine circuit. For heat pumps up to 13kW.

NIBE PCS 44

Provides passive cooling by circulating cold fluid from the ground collector loop through a building’s cooling system.

NIBE FLM S45

An exhaust air module that recovers heat from indoor ventilation air and transfers it to the brine circuit, boosting the efficiency of the connected ground source heat pump. It also provides mechanical ventilation, improving indoor air quality while helping reduce the size of the ground collector needed.Compatible with S-Series heat pumps.

NIBE EME 20 UK

Communication module that translates Modbus RTU, from a solar inverter, to Modbus TCP/IP, for the heat pump to control the solar inverter

NIBE SRV 10

NIBE ROT 10

Wireless room thermostat

NIBE POOL 40

An accessory that allows pool heating using heat pump. Max 18 kW. The heat pump controls the reversing valve, pool circulation pump and any heating circuit circulation pumps via POOL 40.

NIBE THS 10

This wireless sensor allows you to read the temperature and humidity in a room or climate zone using the myUplink app. On the heat pump you can see the current room temperature or change it in °C. THS 10 replaces the fixed indoor sensor. Because it is battery powered, it is easy to install. Mount the sensor in your room and connect it to your NIBE S-Series heating installation.

NIBE RMU S40

Wireless touchscreen controller

NIBE ECS 41

Extra heating circuit (maximum 80-250 m2 floor heating). ECS 41 is used when heat pump is installed in houses with up to four different climate systems that require different flow line temperatures, for example, in cases where the house has both a radiator system and an under floor heating system.

Height (mm)

1500

Width (mm)

600

Depth (mm)

620

Product efficiency class room heating, 35 °C

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Product efficiency class room heating, 55 °C

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System efficiency class room heating, 35 °C

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