Complete commercial HVAC service for businesses throughout Darien and DuPage County — from small offices and retail stores to restaurants and industrial spaces.
Commercial HVAC downtime means lost business and unhappy customers. Heavy Duty Heating & Cooling provides professional commercial HVAC installation, repair, and maintenance for businesses throughout Darien, IL and DuPage County.
Our commercial services in Darien include rooftop unit (RTU) service, commercial refrigeration, walk-in cooler and freezer repair, multi-zone systems, and preventive maintenance contracts. We work around your schedule to minimize disruption.
Darien is a well-established DuPage County suburb where residents value dependable home services. The community's mix of ranch homes and two-stories have varying HVAC needs that our bilingual team handles with expertise.
📍 Key areas in Darien: Carriage Way West, Darien Club area · ZIP: 60561
Installation, repair, and replacement of commercial rooftop HVAC units for offices and restaurants in Darien.
Commercial refrigeration repair for Darien restaurants and grocers. Fast response to prevent product loss.
Fast diagnosis and repair of commercial air conditioning to minimize downtime for your Darien business.
Gas furnace and commercial boiler repair and installation for Darien warehouses and offices.
Scheduled HVAC maintenance contracts to prevent breakdowns at your Darien commercial property.
Design and installation of commercial HVAC for new construction or renovation in Darien.
Same-day & emergency service in Darien and DuPage County.
Free estimates, no hidden fees, upfront quotes before work begins.
English & Spanish service for all Darien customers.
Fully licensed, certified, and insured HVAC professionals.
Local business treating every Darien customer like a neighbor.
We stand behind every job with a satisfaction guarantee.
Yes — offices, restaurants, retail, warehouses, and all commercial properties in Darien and DuPage County.
Yes. Commercial refrigeration including walk-in cooler and freezer repair throughout Darien.
Yes. After-hours and weekend commercial service available to minimize operational disruption.
Yes. Scheduled preventive maintenance plans for commercial customers in Darien.
Based in Joliet — serving Will, Cook & DuPage Counties, IL.