ACSI has remained an essential business at full capacity.

    2020 is our 36th. year in business. We are proud of how far we’ve come, but we know we wouldn’t be here without you. We are thankful for your continued trust, and remain committed to giving you the very best, in all that we do.

    1. We are there when you need us: Our 24-hour team of highly qualified and experienced personnel,
      is there to help when you need it most – day or night!
    2. We maintain our expertise: Our technicians are the best in the business, and we want them to
      stay that way. Continuous training both In-house and through a wide range of training seminars,
      ensures unparalleled skill, expert service, and the best value for your money.
    3. We make YOU our top priority: From our dispatch center and office personnel, to our service
      technicians, mechanical pipe-fitters, and refractory bricklayers and laborers, our friendly and
      courteous staff members, are dedicated to the highest level of customer service. We work as a
      team to meet your needs every step of the way.
    4. We do what it takes to get it right: If our technician finds a problem during service, we follow up to
      make sure it’s resolved. If we don’t have the part you need, we find a temporary solution to keep
      things running, until we do. If we’ve completed a job, we call to confirm that everything is working
      as it should. When it comes to our customers, we’re willing to go the extra mile.

    You are the best part of our business. Our goal is to make sure you know it!

    Frank Lacny
    Frank founded American Combustion Service, Inc. & ACSI Mechanical in 1984. His consulting and specialized service capabilities for working on any type of fuel burner and/or fuel has earned ACSI a reputation as “burner specialists” in the community. Frank has trained and consulted for many groups and companies in Chicago and the Chicago Metropolitan Area. His areas of expertise include burner start-up work, unusual boiler room problem-solving situations, and general backup service support.


    • Are We Doing Enough for You?

      YOU are important to us. We want to make sure that we are doing all we can from our end, to assist you with any help you may need. Now is the time to start thinking about getting your boilers and heating systems checked over. Let’s fix the small problems now before they are big problems later....

    • A Very Cool Deal

      Summer is in full swing, and your air conditioning unit is hard at work. You can make sure it keeps doing its job, by giving it the attention it needs. ...

    • Some Good News to Share

      Mr. Bob Gallagher Retired on May 22nd! Bob had run our Refractory Department for the last 8 years. May God Bless him with a long Happy Retirement!...