Heat pump for use in cold weather climates; Heating, ventilation, air conditioning and refrigeration products, namely, air conditioners; parts for air conditioning and heating units, namely, a fresh air ventilation device; heat pumps, ventilating louvers and school room HVAC units; thruwall air conditioners and heat pumps and parts thereof; heat pumps, ventilating louvers and school room HVAC units for conditioning in-door air; air handlers, namely, equipment used to circulate in-door air; condensing units, namely, equipment that condenses refrigerants for use in air conditioning systems; fan coil units, namely, equipment comprised of a fan and coils for use with chilled water, hot water or refrigerants to blow cooled or heated air; chillers, namely, equipment used to chill in-door air with the use of chilled water or refrigerant

Maintenance and repair services for heating, ventilation, air conditioning and refrigeration products for treating and handling in-door air