Subrox C: The ground source heat pump that heats in winter and cools in summer.
In winter, the Subrox C draws heat for your home from the ground. In summer, it uses the cool ground to keep your home pleasantly and efficiently cool. Passive cooling is integrated directly into the unit. It is available in two output sizes, 8 and 13 kW. It is suitable for the renovation of an existing building, replacing an old heating system, and for new buildings.
The benefits at a glance
- Heating and cooling with one unit
- Two sizes for a heating load from 6 to 13 kW
- Energy efficiency class A+++ (scale A+++ to D) for heating
- Natural R290 refrigerant with safety concept
- Quiet operation inside the house, no unit in the garden
- Requires just 60 × 62 cm of floor space at a height of 1.50 m
- Passive cooling integrated directly into the unit
Warm in winter, pleasantly cool in summer.
Just a few metres below the surface, the ground maintains almost the same temperature all year round. In winter, it is warmer than the air; in summer, it is cooler. The Subrox C makes use of these properties. It is installed inside the house, so there is nothing to see or hear outside.
Pleasantly cool. With little electricity.
In summer, the Subrox C uses the coolness stored in the ground. The heat from your rooms is transferred into the ground. Only the circulation pumps require electricity. This means cooling uses little energy. Cooling capacity is up to 11.9 kW*. The Subrox C works best for cooling via underfloor heating or another surface heating system, without any draughts. Cooling is integrated into the unit, so an additional cooling module on the wall is not required. With the RMU+ room control unit from the accessories range, the Subrox C also measures humidity. This prevents condensation from forming on floors and pipes.
*Cooling capacity at B10/W18:
- Subrox 8 C: 9.8 kW
- Subrox 13 C: 11.9 kW
Efficient heating. With energy efficiency class A+++.
From 1 kWh of electricity, the Subrox C generates around 5 kWh of heat*. It achieves this value at a flow temperature of 35 °C, using surface heating in the floor, wall or ceiling. When heating, the Subrox C achieves energy efficiency class A+++.
*Seasonal Coefficient of Performance (SCOP) at a flow temperature of 35 °C, determined under standard conditions:
- Subrox 8 D178 C: 5.72
- Subrox 13 D178 C: 5.45
In your own building, the value depends, among other things, on the heat source, the heating surfaces and how the system is used.
Safe inside the house.
The Subrox C is filled with the natural R290 refrigerant (propane). To ensure safe indoor installation, it features an integrated safety concept. A sensor monitors the unit around the clock, and an automatic test checks the safety technology every day.
Easy to control. Also with your own solar power.
The Subrox C automatically adapts its heating output to demand. The temperature can be adjusted on the touch display, in the myUplink app or via voice control using Alexa and Google Home, even when you are away.
- Use solar power: With a PV system, the Subrox C preferably heats using your own solar power.
- Use low-cost hours: With a dynamic electricity tariff, it runs when electricity costs less.
- Heat according to the weather forecast: The control system adjusts in advance for colder days.
More output or hot water integrated into the unit
For buildings with a higher heating load, the Subrox is also available with 18 kW heating output. Passive cooling can be retrofitted using an external cooling module. A hot water tank integrated directly into the unit is available with the Subrox D and Subrox D C.
The other variants at a glance:
Which Subrox is right for you?
The Subrox C is available in two sizes. Your specialist installer calculates the building’s heating load. The appropriate size is based on this.
Output size | Recommended for a heating load of |
|---|---|
Subrox 8 C | 6 bis 8 kW |
Subrox 13 C | 8 bis 13 kW |
