Investors Corporate News About Us Services Case Studies Locations Careers Contact Us Keywords Home › About Us › History History The History of ACI Mechanical, Inc. Our company was founded in 1945 in Marshalltown, Iowa as a local appliance repair shop and operated under that structure until 1957 when we became the local dealer for Lennox Industries. Now almost 60 years later, we continue our relationship with Lennox Industries as an Alliance dealer. We operated as a local heating and cooling company unitl the early 80's when we added a traveling element to our business, working mainly in the government markets completing military family housing projects and then Corps of Engineers projects across the continutal United States. During this timeframe we added plumbing to our mix of business offerings and by the mid 80's we had become a full service mechanical contractor focused on the heavy commerical and industrial market place. In August of 1998 we became part of the Comfort Systems USA family of companies with the goal of expanding our footprint in the national markets and reastablishing ourselves in the local HVAC service market. Today we operate as two companies, ACI Mechanical, Inc. which is focused on larger heavy commerical and industrial construction projects and Comfort Systems USA Midwest, which is focused on HVAC service, building automation, and small mechanical construction projects. We may be two companies, but we operate as one to meet the expanding needs of our clients. About Us Company Profile Vision/Values History Awards, Certifications and Associations Key Team Members Safety Work at Comfort Systems USA Join our team of experienced professionals… Contact us about career opportunities Construction Our unified approach emphasizes communication to complete your construction project successfully View our construction services Apprenticeship Program "An investment in knowledge pays the best interest." - Benjamin Franklin Learn more about Apprenticeship This site is protected by copyright and trademark laws under U.S. and International law. All rights reserved. © 2021 Comfort Systems USA