Equipment for floor heating or cooling in buildings - includes return air channel and ventilator coupled to equipment for recovery of heat or cold from exhaust air
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Control method for building heating and cooling systems with inertia - estimating average external temp. against time from measured values over previous 24 hour period taking account of day-night fluctuations and trends
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Building heating and cooling circuit - directs fresh air through chambers in ceilings containing heat-transfer pipes
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Foundation absorber for obtaining and storing ambient heat for a monovalent heat-pump heater
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Foundation absorber as sole heat source for a heat-pump installation
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Prefabricated reinforced concrete slabs serving simultaneously as floors and heating surfaces for buildings
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Light switch for domestic installations
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Output control system for heat pumps
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Heating plant for buildings
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Heating installation
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Building air heat pump - has flat dissipator element on roof supplied with air on one or more sides
