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How TermoDeck works

TermoDeck is a fan-assisted heating, cooling and ventilating system. It uses the high thermal mass of structural, hollowcore slabs to warm or cool fresh air before it's distributed into the room spaces of the building. When correctly designed, the system can maintain comfortable and stable temperatures within a building over the course of a day.

The exposed concrete releases heat to, or absorbs heat from, the air passing through it. So by the time the air enters the room it is the ideal temperature for occupant satisfaction. See other Benefits of TermoDeck and find out what the 7 steps to a TermoDeck building are.

Thermal mass helps to both cool a building in the summer and keep it warm in winter:



Summer nights At night, the air supply fans bring the cool outdoor air into the hollowcore slabs, lowering the temperature of the building. This is known as free night cooling.		Summer days During the day, warm air that enters the building is cooled as it passes through the hollowcore slabs. The high thermal mass of the exposed ceiling soffit also absorbs internal heat gains generated from lighting, equipment, people and re-radiated solar gains.


Winter days The heat stored by the thermal mass of the hollowcore slabs warms the fresh air from a cold winters day. Extra heat top-up may be provided by a heater unit only where necessary.		Winter nights During the night, the system is dampered shut. The stored heat is distributed and gradually released to the internal spaces. In a lightweight building the temperature will fall more rapidly.