A-1 United Heating and Air Conditioning was established in 1975. In 1981, Ray Barr, Tom Brummett and Stan Gregory purchased the company with the ambition to become one of the leading heating and air conditioning companies in Omaha. After starting business with only one install technician and one service technician, their dream has been realized after growing into a company with a staff of over 50 people and branching out into all areas of the HVAC business.