Business Details
42 Years
experience
Emergency
services
Trusted HVAC & Boiler Services in Mokena, IL
ACSI Mechanical Group was founded in 1984 by Frank M. Lacny in Mokena, Illinois. Our company specializes in industrial HVAC, boiler, and piping systems, offering installation, maintenance, and 24/7 emergency repair services. With decades of hands-on experience, we serve clients across the U.S., including hospitals, manufacturers, and high-rise buildings. Our team of certified technicians holds Boiler and Pressure Vessel Certification, ensuring compliance with industry standards. We prioritize worker safety, having received the 2017 Safe Workplace Award from the Mechanical Contractors Association of Chicago.Our consultative approach addresses energy efficiency, emissions, and cost-effective solutions, supported by an extensive inventory of new and used equipment. We pride ourselves on rapid response times, personalized service, and a commitment to resolving complex mechanical challenges. Our partnerships with authorized sales providers like Weishaupt and MiURA enhance our ability to deliver high-quality products. Customer testimonials highlight our reliability, technical expertise, and dedication to client satisfaction, making us a trusted partner for critical mechanical systems nationwide.
Services
HVAC Services
Boiler Repair
Piping Installation
Refractory Services
Emergency Repair
Equipment Sales
Parts Supply
Consulting
Maintenance
Installation
Details
- Year established: 1984
Highlights and features
- 40+ years of specialized experience in industrial HVAC and boiler systems.
- 24/7 emergency response with rapid service nationwide.
- Certified technicians with Boiler and Pressure Vessel Certification.
- Energy-saving solutions with documented 80-85% efficiency improvements.
- Extensive inventory of new/used equipment and parts for immediate needs.
What people say
Great and so far running good
Pleased with the service call
Pinpointed the problem immediately
New favorite tech
Speedy service
Services
HVAC Services
ACSI Mechanical Group provides comprehensive HVAC solutions for commercial and industrial facilities. Our certified technicians install, maintain, and repair systems to ensure optimal efficiency and compliance. We specialize in emergency repairs, energy-saving upgrades, and customized maintenance plans. Clients benefit from rapid response times and expertise in complex systems, reducing downtime and operational costs.
Boiler Repair
Our boiler repair and maintenance services address leaks, inefficiency, and sediment buildup. We offer retubing, refractory repairs, and high-efficiency burner upgrades. Emergency boiler replacement and descaling services ensure minimal downtime. Certified technicians use BPVC standards to extend equipment lifespan and improve energy efficiency for industrial clients.
Piping Installation
ACSI installs and repairs industrial gas, oil, and steam piping systems. Our union-certified pipefitters handle upgrades, process piping, and high-pressure applications. Services include material selection, code-compliant installation, and leak detection. We prioritize safety and efficiency, serving hospitals, bakeries, and manufacturing facilities in the Chicagoland area.
Refractory Services
We provide refractory installation and repair for boilers, kilns, and furnaces. Our engineers assess thermal shock resistance and insulation needs to select optimal materials. Services include burner block fabrication and upgrades to enhance combustion efficiency, extending equipment life while maintaining safety standards for industrial operations.
Emergency Repair
ACSI offers 24/7 emergency repair services for HVAC, boilers, and piping systems. Our rapid response team addresses critical failures with certified technicians and mobile equipment. Clients receive immediate diagnostics and solutions to minimize downtime, supported by a 37-year reputation for reliability in industrial and commercial settings.
Questions
What services does ACSI Mechanical Group offer?
We specialize in HVAC, boiler, and piping installation, maintenance, and 24/7 emergency repair services for industrial and commercial clients.
Do you provide emergency services outside regular business hours?
Yes, our 24/7 emergency response team is available year-round for urgent HVAC, boiler, and piping issues.
Which industries do you serve?
We work with hospitals, manufacturers, high-rise buildings, refineries, and industrial facilities nationwide.
How can I schedule a service appointment?
Call our 24-hour dispatch center at 773-737-9200 or submit an online inquiry for non-emergency requests.
Do you offer energy-saving solutions?
Yes, our energy assessments and high-efficiency equipment installations have achieved 80-85% savings for clients.
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