510 E Ryan Ave Calera, OK 74730, United States 580-434-7215 http://www.johnsonsheatandair.com/ Johnson's Heating Air Conditioning Refrigeration specializes in both HVAC installations and repairs for home and businesses in Bryan and Grayson counties. In addition to serving as an independent Trane dealer, this team offers a wide array of services to ensure your heating and cooling system is running at the best of its ability. Located in Calera, OK, this heating and air conditioning company offers all the latest in HVAC... read full review »