For the best HVAC service in Mokena and the surrounding areas. Don't hesitate to call Comfort Zone Service. We offer high quality heating and air conditioning repair, service, and installation at an affordable price with a 100% satisfaction guarantee. If you need 24/7 Emergency service, feel free to give us a call at any hour of the day. • 9910 W. 190th Street, Suite K Mokena IL 60448 USA • (708) 403-3434