​My grandfather Leroy Roman Gregory and my father Roy Gregory established L.R. Gregory & Son, Inc in 1952. They came from Waukegan where my grandfather left his job at US Steel to establish a heating, air conditioning and sheet metal company in Lake Forest. We've earned a reputation for providing the highest level of customer satisfaction. We hope you let us serve you into the future.​

​​Jim's

Ensuring Comfort and Peace of Mind

We are fully licensed and insured. You can rest easy knowing that when an emergency hits, you can count on our 24/7 emergency service. Our technicians quick, professional service and our work is 100% guaranteed. We service all makes and models of heating and cooling equipment.