Natural refrigerator
Free cooling unit for heat pumps, cooling capacity up to 5 kW
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Dissipates heat
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Compact and thermally insulated
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Affordable and energy-efficient
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Quick and easy installation
Environmentally Responsible Heat Pumps – Find out more about the different options and benefits!
Dissipates heat
Into the ground or groundwater
Affordable and energy-efficient
Very little electricity is required to operate heat pump circulators
Compact and thermally insulated
With small dimensions
Quick and easy installation
Thanks to pre-assembled components
Pre-assembly at the factory
All in one carton
NC-Box – Let Your Heat Pump Provide Cooling in Summer
Energy-efficient and affordable cooling
On hot summer days, the heat pump control unit switches to free cooling via the NC-Box and removes excess heat from the interior via the heating circuit to colder ground or groundwater. This requires only a small amount of electricity for the circulation pumps. All other functions of the heat pump remain switched off.
This makes free cooling an energy-efficient and inexpensive way to cool a building.
All in one carton
The compact NC-Box is factory-equipped with all the necessary components and can be quickly installed by your heating contractor.
Viessmann NC Box
