A Legacy of Comfort and Quality

Guardian Heating & Cooling has been a trusted name in the HVAC industry for over three decades. Founded in 1990 by John and Sarah Thompson, this family-owned business has grown from a small operation in Chicago to a leading service provider across multiple Illinois communities.

Our Journey

The Thompsons started Guardian with a simple mission: to provide reliable and affordable heating and cooling solutions to their neighbors. What began as a two-person team operating out of their garage has evolved into a full-service HVAC company with a staff of over 50 skilled technicians and support personnel.

Expanding Our Reach

As Guardian’s reputation for excellence grew, so did our service area. Today, we proudly serve customers in:

• Chicago, IL
• Northbrook, IL
• Lincoln Park, IL
• Skokie, IL
• Glenview, IL
• Highland Park, IL

Services That Set Us Apart

Over the years, we’ve continually expanded our expertise to meet the evolving needs of our customers. Our comprehensive services now include:

• Air Conditioning Installation
• AC Repair
• AC Service
• Air Conditioner Repair
• Heating System Installation and Maintenance

Commitment to Innovation

Guardian Heating & Cooling has always been at the forefront of HVAC technology. We were among the first in the region to offer energy-efficient systems and smart home integration for climate control. Our technicians undergo regular training to stay up-to-date with the latest advancements in the field.

Community Involvement

As we’ve grown, we’ve never forgotten our roots. Guardian remains deeply committed to the communities we serve, participating in local events and supporting various charitable initiatives throughout the Chicagoland area.

Looking to the Future

Today, Guardian Heating & Cooling continues to be a family-owned business, with the second generation of Thompsons now at the helm. We look forward to many more years of keeping our customers comfortable, no matter the season.

From our humble beginnings to our current status as a regional HVAC leader, Guardian Heating & Cooling’s history is a testament to the power of quality service, integrity, and community commitment. We’re proud of our past and excited about our future as we continue to serve the heating and cooling needs of Illinois residents.