At Allied Air Conditioning & Heating Corporation, we know that HVAC systems often break down at inconvenient times. That’s why our team provides prompt, 24/7 emergency service to the Illinois area. We are an authorized dealer of carrier HVAC equipment and have been a proud recipient of the Carrier President’s Award for 14 years straight. Our goal is to grow through our reputation as a trustworthy company and keep loyal to our promise. Let us take the stress out of a heating or cooling emergency.