Thank you for visiting the website of Giant HVAC, Inc. We offer 24 hour emergency HVAC in Chicago IL. Our team has over three decades of experience and is located in Chicago, IL. We specialize in residential and commercial HVAC repairs, installations and maintenance. You can also look to us for commercial refrigeration services. Call 773-539-9629 for 24 hour emergency heating and cooling services in Chicago or email [email protected] to learn more about our services today.