Commercial HVAC service and maintenance for restaurants, offices, and industrial buildings across the Chicago metro. Written estimates. Documented work. One team, one point of contact.
From a rooftop unit that quit on a Saturday to a full maintenance program for a portfolio of buildings — pick the service you need below.
Rooftop units, split systems, IAQ. Stocked vans, first-visit repairs, flat-rate pricing.
View service → SVC / 02 — KITCHENSExhaust fans, make-up air, dining-room comfort. Code-passing work, scheduled around your hours.
View service → SVC / 03 — VENTILATIONExhaust fans, MAUs, industrial ventilation. Belt service to full installs.
View service → SVC / 04 — MAINTENANCEQuarterly & seasonal contracts. Priority service, locked-in pricing, same-tech continuity.
View service →Every major commercial brand across HVAC, ventilation, and refrigeration. If you don't see yours, call and ask.
We service commercial and industrial properties across the Chicago metro. No residential furnaces, no consumer work — just structured mechanical work for buildings that need it.
Exhaust fans, make-up air, dining-room comfort — code-passing work scheduled around your service hours. When kitchen equipment quits, service stops. We keep it running.
RTUs, splits, IAQ, controls — comfort, air quality, and thermostat programming for buildings full of people. Preventative maintenance keeps the calls short.
Process exhaust, MAUs, ventilation, VFDs — commercial ventilation systems, industrial make-up air, and the ductwork & balancing that keeps them within spec.
Portfolios, multi-tenant, multi-building — one point of contact for every property. Consolidated invoicing, scheduled maintenance, priority dispatch across the whole book.
Frontline Mechanical services commercial and industrial properties across the Chicago metro area. Restaurants, offices, warehouses, clinics, and multifamily buildings — we work where uptime matters.
Every job is done to the same standard: written estimates before we start, documented work when we finish, and a workmanship guarantee behind everything.
No consumer work. No residential furnaces. No same-day promises we can't keep — just structured, professional mechanical work for buildings that need it.
"They've handled our rooftop units for twelve years. Never had to think about it once — that's the highest compliment I can give a contractor."
"Our make-up air unit failed right before opening. Frontline got a tech out, found the issue, and had us back up before service. Saved our weekend."
"Written estimates, no upselling, work done when they said. We've moved three buildings onto their quarterly program. That should tell you everything."
A real dispatcher answers — no menus, no bots — and we'll get back to you within one business day with a plan and a written estimate.