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43 Years
experience
Emergency
services
Your Trusted HVAC Partner in Schaumburg, IL
Corcoran Heating & Air Conditioning Heating and Air Conditioning has been a trusted name in HVAC services since 1983, founded on the principle of delivering unparalleled comfort and safety to residential and commercial clients. Our family-owned business combines decades of hands-on experience with cutting-edge technology to ensure optimal performance of heating, ventilation, and air conditioning systems. Led by Tom and John Corcoran Heating & Air Conditioning Heating and Air Conditioning, our team of NCI- and NATE-certified technicians prioritizes energy efficiency, environmental responsibility, and customer satisfaction.

We specialize in comprehensive solutions, from emergency repairs and maintenance to system replacements and custom engineering, ensuring every client receives personalized attention. Our commitment to exceeding industry standards is reflected in our rigorous testing, transparent communication, and dedication to resolving even the most complex comfort challenges. With 24/7 emergency services and a focus on long-term relationships, we remain a leader in Chicagoland's HVAC industry.
Services
Furnace Repair Air Conditioning Service Boiler Maintenance HVAC Installation Emergency Repairs Duct System Testing Commercial Kitchen Ventilation Indoor Air Quality Solutions Thermostat Upgrades Preventive Maintenance
Details
  • Year established: 1983
Highlights and features
  • 30+ years of experience in HVAC services with a family-owned commitment to excellence.
  • NCI- and NATE-certified technicians ensure industry-leading expertise and standards.
  • 24/7 emergency response for urgent heating and cooling needs.
  • Performance-based diagnostics to optimize system efficiency and reduce utility costs.
  • Transparent communication with upfront pricing and no hidden fees.
Associations and certifications
  • National Comfort Institute (NCI)
  • North American Technician Excellence (NATE)
What people say
Exceptional service Knowledgeable technicians 24/7 emergency availability Energy-efficient solutions Transparent communication
Services
HVAC Repair
Our certified technicians provide prompt HVAC repairs for furnaces, air conditioners, boilers, and commercial systems. Using calibrated equipment, we diagnose issues like carbon monoxide leaks and airflow inefficiencies, ensuring safe and efficient operation. Emergency services are available 24/7 to address urgent heating and cooling failures, minimizing downtime and discomfort.
Preventive Maintenance
PerformanceMaxx maintenance programs include seasonal testing and adjustments to optimize system efficiency. We measure airflow, static pressure, and equipment performance, offering free diagnostics during visits. Regular maintenance reduces utility costs, extends equipment life, and maintains manufacturer warranties, with priority service for agreement holders.
Equipment Replacement
We specialize in HVAC replacements tailored to your home or business needs. Our process includes load calculations, duct system analysis, and digital modeling to ensure proper sizing and efficiency. From furnaces to mini-splits, we install high-efficiency systems that enhance comfort while reducing energy consumption and environmental impact.
Commercial Ventilation
Our commercial ventilation services design and install exhaust, make-up air, and test-and-balance systems for restaurants and industrial kitchens. Partnering with CaptiveAire, we ensure compliance with safety codes and energy standards, offering maintenance and emergency repairs to sustain optimal performance in high-demand environments.
Indoor Air Quality
We address allergens, humidity imbalances, and pollutants through advanced filtration, HEPA systems, and humidity control solutions. By testing ductwork and airflow, we identify contamination sources and implement fixes to improve respiratory health and comfort in residential and commercial spaces.
People
Tom Corcoran
Owner
Tom founded Corcoran Heating & Air Conditioning Heating and Air Conditioning Heating in 1983 after years of hands-on HVAC experience. A pioneer in performance-based diagnostics, he emphasizes safety, efficiency, and customer education. His leadership drives the company's commitment to exceeding industry standards.
John Corcoran
Co-Owner
John joined the family business after studying engineering, blending technical expertise with digital innovation. He oversees system design and testing, ensuring solutions meet modern efficiency demands while maintaining personalized service.
Brenda Murphy
Office Manager
Brenda has managed scheduling and client relations since 2004. Her organizational skills and attention to detail ensure seamless service coordination, from appointments to financing, enhancing customer satisfaction and operational efficiency.
Questions
Do you offer 24/7 emergency HVAC services?
Yes, we provide 24/7/365 emergency repair services for urgent heating and cooling issues, with technicians available immediately.
What areas do you serve?
We serve Chicagoland, including Barrington, Inverness, Winnetka, Lake Forest, and surrounding communities.
Are your technicians certified?
Our team holds NCI and NATE certifications, ensuring expertise in performance testing, diagnostics, and energy-efficient installations.
Do you offer maintenance agreements?
Yes, our PerformanceMaxx maintenance programs include seasonal tune-ups, free diagnostics, and 15% discounts on repairs.
Can you help with commercial HVAC needs?
We specialize in commercial systems, including kitchen ventilation, test-and-balance reports, and emergency repairs for businesses.
Videos
Reviews (4)
Saket Khemka
Nov 24, 2020 Report
Here is how they operate - I called them to get the furnace checked. They asked me that the cost would be $89 for the check-up and if I would like to go ahead with the repair, that would absorbed in the repair cost. So, they came to inspect right on time (that's the good part). After they inspected, they told be that the repair would cost me somewhere between $800-1000. Since, it would have made sense to get the furnace replace rather than pay that high amount, I tried to decline the repair.

They mentioned, if I decline, I would need to pay them $240 for the check-up! WHY? Because they said the diagnosis took them more time than they thought. That is not my fault! Also, they told me to make the decision within few minutes because the check-up cost would go up every 15 minutes. I had NO option left but to go ahead with the repair service rather than take some time to evaluate the option. Never again!
Tscale
Feb 02, 2020 Report
Would highly recommend the guys at Corcoran. They did work at my office and shop which included re-balancing air flow within each room. They took a highly technical approach and then did several mods on our existing system to make it all work much better than it every has. Corcoran did not do the original install, but I wish they had because they really known their stuff. Not to mention timely and professional as well.
Nick Zeppetello
Feb 19, 2019 Report
Awesome Family Owned Company. Fixed a vent issue I have been putting up with since I bought the house. Looked at my furnace and vents and now my house is warmer and the heat kicks on less which I'm going to assume will save me money. I actually retired the space heater! Tom the owner also saw an issue with my water heater and carbon monoxide after he packed his gear up, and insisted that he fix the issue for my families safety. Charged me more then a fair price and possibly saved my life? Give Corcoran Heating a Call! They give you a much more personalized service then these national franchises. Couldn't be Happier!
Mike Lovda
Nov 24, 2017 Report
On-time, professional, courteous, no upselling, explained situation and what repairs were completed. Despite number of HVAC repairmen choices in area, I will definitely use Corcoran in future again if/when needed. would highly recommend to anyone in need of HVAC services. -Mike