Compare 4 Verified HVAC Companies in DeKalb, IL

HERO Heating & Air Conditioning provides comprehensive HVAC services to residential customers in DeKalb County, Illinois. Specializing in furnace and air conditioner repair, installation, and maintenance, we combine advanced technology with personalized service. Our 38-year legacy reflects a commitment to energy efficiency, indoor air quality improvement, and 24/7 emergency response capabilities.

DeKalb Mechanical is a full-service commercial HVAC contractor serving Northern Illinois since 1991. We specialize in complete heating, cooling, and refrigeration solutions including system design, installation, maintenance, and emergency repair services. Our experienced technicians handle everything from small business units to large-scale commercial systems with customized metal fabrication capabilities.

All-Star Heating & Air Conditioning specializes in HVAC, plumbing, and electrical solutions for residential and commercial clients in Northern Illinois. Established in 1965, we combine three generations of expertise with modern technology to deliver reliable, energy-efficient services. Our certified technicians provide 24/7 emergency support and stand behind their work with industry-leading guarantees.

1 Source Mechanical is a premier commercial HVAC contractor in Chicago, specializing in heating, ventilation, air conditioning, refrigeration, and building automation systems. We deliver energy-efficient mechanical solutions for commercial properties across Illinois, combining technical expertise with personalized service. Our experienced team provides installation, repair, and maintenance services tailored to meet the unique needs of each client.