ST. LOUIS, MO Integrated Facility Services (IFS), a full-service mechanical engineering firm and the eighth largest specialty subcontractor in Missouri, is celebrating its 50th anniversary. IFS provides HVAC, plumbing, piping, building automation and energy conservation services to clients across the country from offices in St. Louis and Columbia, Missouri.

Established by Bill Rundquist in 1966 as Air Masters, the company now employs more than 250 workers in five divisions - HVAC and mechanical, plumbing, fire protection, building automation and controls, and national design build and mechanical construction. The in-house engineering department offers licensed professional engineers, GPS and 3D modeling, and other state-of-the-art technologies to improve jobsite coordination and efficiency. 

In 2016, Air Masters consolidated its four affiliated companies and rebranded as Integrated Facility Services (IFS), a single-point resource for mechanical contracting and service. Today, IFS is led by Rundquist's son, John Rundquist, who joined the company as a University of Missouri graduate and assumed the role of President in 2012. Bill Rundquist continues to serve as CEO and Chairman.

Bill Rundquist launched the company out of his home in 1966 with a few dollars and a vision to build an organization based on excellent customer service, solid technical expertise and a commitment to the highest quality. On his second day in business, Rundquist sold a residential air conditioning job and installed it himself. He recalls borrowing his young daughter's wagon to haul the condensing unit from his new 1965 Dodge sedan to the installation pad. Within several months, Rundquist was adding employees to install and service HVAC equipment.

Over the past five decades, IFS has moved six times to accommodate constant growth and expansion. Bill Rundquist purchased the current 56,000-square-foot headquarters building at 1055 Cassens Industrial Ct. in Fenton, Missouri, in 2004. When IFS recently reorganized and remodeled this year, John Rundquist had the company's core values of stewardship, safety, integrity, teamwork, and innovation etched into the glass doors of the conference and meeting rooms.

IFS recently expanded its state-of-the-art pipe fabrication and welding shop into a nearby building on Cassens Industrial Ct. in Fenton. They also purchased a 10-acre site in Columbia, Missouri, for a branch office and warehouse facilities to serve the mid-Missouri market.