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Energy heat recovery ventilators and heater cores for use therewith; air ventilators for domestic use; air filters for domestic use; pre conditioner units for domestic use; heat wheels; heat sinks for use in heating, cooling and ventilating apparatus; heat pipes to cool heat producing components; heat pumps; air cooled cooling units for domestic use; water cooled cooling units for domestic use; air heating units for domestic use

Installation, maintenance and repair of energy heat recovery ventilators and cores for use therewith, air ventilators, air filters, pre conditioner units, heat wheels, heat plates and heat pipes, heat pumps, air cooled cooling units, water cooled cooling units and air heating units