Operational for over 71 years, Grand Heating and AC is into installing, servicing and providing heating, air conditioning and indoor air quality equipments. Based in Los Angeles, Calif., the company serves residential/commercial customers and provides various services, such as design build/installation, preventative maintenance and air purification. It offers customers a wide range of products, including evaporator coils, ventilators, ultraviolet (UV), air cleaners and humidifiers/dehumidifiers. In addition, the firm provides air handlers, zoning, packaged heating/cooling systems, high-efficiency heat pumps, furnaces and more.