Industrial and Commercial Boiler, Burner & HVAC Repair Services

2015 is our 31st year in business. We’re 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. Let me count the ways: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 pipefitters, 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, President

American Combustion Service, Inc.


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.