Integrity Heating and Cooling and is the certified and experienced HVAC company that Greater Chicago trusts. For over twenty years, our team has provided heating and ac services, including maintenance, repair and installation. Let the expert service company handle your AC needs with our 100% satisfaction guarantee, valid for even two years after the service is complete. We only work with the best of the best; this is why all of our technicians are EPA certified and subcontractors are never used. We strive to give our customers quick and efficient service, and for this reason, we offer a “24-hour HVAC service guarantee”, meaning that we will address your issue within 24 hours or we will put you in a hotel for the night, no excuses.