Air Conveyance Treatment Services, CATCO Division, is now FIRST ONSITE.
We’re uniting the best brands in restoration across North America to better serve you. With more knowledge and resources, and genuine human power, we are ready to take on any job, no matter what.
Air Conveyance Treatment Services was a division of CATCO, providing mechanical hygiene and HVAC cleaning services to the St. Louis and Kansas City region and beyond. With both hands-on experience and certifications from the National Air Duct Cleaners Association (NADCA), Air Conveyance Treatment Services (ACTS) technicians are able to provide complete scopes of work and estimates as well as full inspections using robotics, and coordination of these specialized cleaning projects in the field, seeing them through completion and billing.
Whether you were located in Missouri, elsewhere in the Midwest, or anywhere in the United States, clients have confidently relied on Air Conveyance Treatment Services for professional HVAC and duct system cleaning since the 1990s.
Today, Air Conveyance Treatment Services brings its all-star spirit and dedication to FIRST ONSITE. Together, we rise as the only partner you’ll ever need before, during, and post-disaster, with over 2,000 team members across North America and more than 70 years of combined experience.
Our Services Go Beyond
When your needs go beyond water damage cleanup, so do our services. See how our experience can help you overcome whatever comes your way.
Meet the stand-out team members who will be there for you every step of the way.
As the former owner and president of CATCO, Michael Hammack has been involved with restoration & reconstruction efforts at Deering Hospital & Broward County School District after Hurricane Andrew, Marshall Fields in downtown Chicago after the Chicago River flood, and Schering-Plough Pharmaceutical fire in Memphis, Tennessee. He headed the company through large projects: St. Anthony’s of Padua Church fire (St. Louis), Bank of America – 17 locations in Houston, TX after Tropical Storm Allison, Civil Courts building & Ursuline Academy in New Orleans after Hurricane Katrina, The Fox Theatre in St. Louis, MO after a fire, and countless other high-profile projects.
Originally from Missouri, Michael has had direct ties to the restoration industry since the 1980s. He purchased Catastrophe Cleaning and Restoration Company, Inc (dba CATCO) in 1991 and implemented a growth strategy that involved branching out with parallel services as well as an starting an additional branch in Kansas City. As part of a full-service line-up, CATCO has offered duct cleaning, wood refinishing, contents restoration, temporary interior protection services and many types of specialty cleaning to its clients. Michael Hammack retired in June, 2022 after more than 30 years and promoted Chris Asleson to local leadership after mentoring him for 20 of those years.
Chris Asleson has been instrumental in the growth of CATCO since he joined the company as head of the construction division more than two decades ago. He developed relationships with reputable subcontractors as well as insurance adjusters while leading his staff to provide excellent service. He moved over to the account management side of the business and expanded the sales efforts in the St. Louis region and beyond. Not afraid to be hands-on, Chris developed a reputation with his clients as a problem solver. His customers know they only need to call Chris to get a project moving quickly and effectively. Chris took over the reigns of the Missouri branches in June of 2022 when Michael Hammack retired, effectively continuing our legacy in the St. Louis metropolitan area as a full-service restoration leader.
Air Conveyance Treatment Services started as a division of CATCO providing service to the St Louis and Kansas City region. By joining forces with FIRST ONSITE, we are now able to service all of North America.
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