Rooftop units, make-up air, exhaust, unit heaters, repairs, replacements, and maintenance for Chicagoland businesses.



Commercial HVAC
Commercial HVAC problems affect employees, customers, tenants, and equipment. Rescuetek helps business owners and property managers keep rooftop units and related systems operating with repair, maintenance, and replacement support across Chicagoland.
We focus on practical service: diagnose the failure, document the condition, complete the repair where possible, and help plan the next maintenance or replacement decision before downtime gets more expensive.
Diagnostics for ignition, compressors, motors, contactors, economizers, belts, filters, sensors, controls, and airflow issues.
Service for make-up air units, exhaust systems, and commercial ventilation equipment tied to comfort or occupancy needs.
Heating and cooling start-ups help catch worn components, dirty coils, airflow problems, and control issues before peak demand.
When equipment is aging or unreliable, we help evaluate access, curb fit, electrical needs, controls, and project timing.
Local coverage
We service commercial HVAC systems across Glendale Heights, Bloomingdale, Carol Stream, Wheaton, Naperville, Schaumburg, Oak Brook, St. Charles, Arlington Heights, and surrounding Chicagoland suburbs.
Call (847) 305-4770We service rooftop units, split systems, unit heaters, make-up air units, exhaust systems, controls, and related commercial comfort equipment.
Yes. We can set up filter and belt programs, seasonal start-ups, inspection schedules, and repair recommendations for single-site and multi-unit properties.
Yes. We can evaluate existing RTUs, discuss repair versus replacement, and plan equipment replacement around access, curb fit, controls, and business timing.