Thornton Heating Service, Inc.

Emergency Hours: 24/7

When the Weather’s at its Worst. We’re at our Best.

Expert Services for your Specialized Needs

Since 1959, Thornton Heating Service has kept Chicagoland homes and businesses comfortable year-round. Choose a service below to learn more or schedule an appointment.

A person’s hands are adjusting gauges and wires on an air conditioning unit, performing maintenance or repair work.
A technician in a blue uniform and gloves uses a multimeter to check electrical connections inside an open industrial control panel.

Schedule Your Appointment

Cooling

Stay cool and comfortable through every summer.

All cooling services

Commercial & Specialty

HVAC and custom ductwork for small businesses.

Maintenance Plans

Protect your system all year with the Guardian Protection Program.

Learn about Guardian

24/7 Emergency Service

No heat or no cooling after hours? We're here day and night.

Get emergency help

Expert HVAC Solutions from Thornton Heating Service

Residents and businesses trust Thornton for local HVAC services because we combine decades of experience with honest, expert care. As a locally owned company, we’re proud to serve Libertyville, Vernon Hills, Waukegan, Gurnee, and other nearby communities.

 

With flexible scheduling, transparent pricing, and 24/7 emergency support, Thornton Heating & Cooling delivers comfort you can count on.

 

Ready to get started? Schedule a service, request a quote, or ask about our HVAC maintenance programs today and experience the Thornton difference.

Thornton Employee consulting with homeowner

Schedule Your Appointment

From heating to cooling and beyond, get reliable HVAC services from Thornton Heating. Book your appointment today!