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43 Years
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Emergency
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Your Trusted HVAC Experts in Schaumburg, IL
Corcoran Heating and Air Conditioning Heating and Air Conditioning has been a trusted name in HVAC services since 1983. Founded by Tom Corcoran Heating and Air Conditioning Heating and Air Conditioning and now led by father-and-son duo Tom and John Corcoran Heating and Air Conditioning Heating and Air Conditioning, our team brings over three decades of hands-on experience and industry-leading expertise. We specialize in residential and commercial HVAC repair, maintenance, and replacement, with a focus on energy efficiency, safety, and customer satisfaction. Our technicians hold certifications from the National Comfort Institute (NCI) and North American Technician Excellence (NATE), ensuring the highest standards of service.

We prioritize personalized solutions, using advanced testing and modeling to optimize system performance and reduce utility costs. As a family-owned business, we value integrity, transparency, and long-term relationships, offering 24/7 emergency services and a satisfaction guarantee. Our commitment to exceeding industry standards has made us a top choice for Chicagoland homes and businesses.
Services
Furnace Repair AC Maintenance Boiler Replacement Commercial HVAC 24/7 Emergency Service Indoor Air Quality Duct System Testing Commercial Kitchen Ventilation Carbon Monoxide Testing HVAC Maintenance Agreements
Details
  • Year established: 1983
Highlights and features
  • We offer 24/7 emergency HVAC services for urgent needs.
  • Our technicians hold NCI and NATE certifications for technical excellence.
  • 30+ years of experience serving residential and commercial clients.
  • Performance-based maintenance reduces utility costs by up to 30%.
  • Family-owned with a satisfaction guarantee and no hidden fees.
Associations and certifications
  • NCI Certified
  • NATE Certified
What people say
Knowledgeable technicians Prompt emergency response Transparent pricing Family-owned reliability Energy savings guaranteed
Services
HVAC Repair Services
Our certified technicians provide rapid HVAC repairs for furnaces, air conditioners, boilers, and commercial systems. Using calibrated equipment, we diagnose issues like carbon monoxide leaks and airflow inefficiencies. Emergency services operate 24/7/365, with upfront pricing and a satisfaction guarantee. Residential service calls start at $94.50, commercial at $135.00.
Preventive Maintenance
PerformanceMaxx maintenance programs optimize system efficiency through airflow testing, filter replacement, and CO analysis. Residential clients receive a 15% discount on repairs, while commercial accounts get priority scheduling. Maintenance agreements include free diagnostics during visits and extend equipment warranties.
System Replacement
We design and install energy-efficient HVAC systems tailored to building specifications. Services include load calculations, ductwork optimization, and radiant heating solutions. Pricing starts at $197 for equipment assessments, with discounts for maintenance agreement holders. Custom proposals address comfort issues like uneven temperatures.
Commercial Kitchen Ventilation
Specialized services for restaurants and commercial kitchens include CaptiveAire system installation, exhaust fan repair, and test-and-balance certification. Our team handles make-up air units and negative pressure elimination, ensuring compliance with safety codes and energy standards.
Indoor Air Quality
We address allergens, humidity imbalances, and duct inefficiencies through HEPA filters, ERV/HRV systems, and airflow modeling. Services include humidity control solutions and pollutant removal, improving health and comfort in homes with persistent IAQ issues.
People
Tom Corcoran
Owner
HVAC industry veteran with 35+ years of experience. Founded Corcoran Heating and Air Conditioning Heating and Air Conditioning Heating in 1983 after technical training and fieldwork. Pioneer of PerformanceMaxx testing, emphasizing system-wide efficiency over equipment-only solutions. Recognized for raising industry standards through rigorous training.
John Corcoran
V.P. of Operations
Second-generation HVAC expert with a University of Kansas business degree. Manages system design, digital marketing, and client consultations. Specializes in residential comfort engineering and commercial kitchen ventilation solutions. Instrumental in expanding technical education programs.
Janet Corcoran
Office Manager
Former registered nurse turned HVAC business manager. Handles accounting, insurance, and payroll for 20+ years. Maintains financial compliance and operational workflows. Key figure in transitioning the company from home-based operations to a full-scale contractor.
Brenda Murphy
Scheduling Coordinator
Manages appointments, billing, and client communications since 2004. Holds a biological sciences degree with pharmacy tech training. Implemented GPS tracking for technician dispatch optimization. Oversees financing arrangements and warranty claims processing.
Greg Jones
Senior Installer
11-year Corcoran Heating and Air Conditioning Heating and Air Conditioning veteran with expertise in commercial welding and HVAC installation. Certified in combustion testing and energy recovery ventilators. Provides technical training to junior staff and leads complex retrofit projects for industrial clients.
Questions
What HVAC services does Corcoran Heating and Air Conditioning Heating and Air Conditioning offer?
We provide furnace/AC repair, boiler maintenance, duct testing, indoor air quality solutions, and 24/7 emergency services for residential and commercial clients.
Are technicians certified?
Our team holds NCI and NATE certifications, with ongoing training in advanced diagnostics and energy-efficient systems.
Do you service all HVAC brands?
We service most makes and models, including furnaces, boilers, rooftop units, mini-splits, and commercial kitchen ventilation systems.
What financing options exist?
Flexible financing available for equipment replacements, with special programs discussed during consultation visits.
How can I reduce energy costs?
PerformanceMaxx maintenance improves efficiency by 20-30%. Our diagnostic testing identifies duct leaks and airflow issues for targeted repairs.
Videos
Reviews (5)
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
Nick Zeppetello
Dec 04, 2016 Report
Its great to find a Family owned company that offers such great service from the first call to the maintenance appointments! John has offered me valuable advice which has kept my furnace running smoothly for years. Every HVAC technician they sent has been friendly and professional. I would never call anyone else for my heating repair needs. Thanks for being Great!