Fast, reliable heating and cooling service for homes and businesses in Darien. Licensed, insured, bilingual EN/ES. Free estimates.
Whether your air conditioner stops cooling on the hottest day of summer or your furnace won't start on a cold Illinois night, Heavy Duty Heating & Cooling is ready to respond fast. We serve Darien residents and businesses with the same quality and care we'd give our own family. Licensed, certified, and bilingual — English and Spanish.
We offer free estimates, fair pricing with no surprise charges, and 24/7 emergency availability for Darien and surrounding communities in DuPage County, Illinois.
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
Complete heating and cooling solutions for residential and commercial properties.
Fast diagnosis and repair of all central AC systems. We restore your cool quickly at fair prices.
Learn More →Expert installation of energy-efficient AC systems sized right for your Darien home or business.
Learn More →Gas furnace troubleshooting, repair, and tune-up. Reliable heating through every Illinois winter.
Learn More →High-efficiency furnace installation with proper sizing, ductwork inspection, and full warranty.
Learn More →24/7 emergency heating and cooling response. We answer when you need us most — day or night.
Learn More →Ductless mini-split systems for additions, garages, or any space needing independent climate control.
Learn More →Commercial heating and cooling for businesses, restaurants, offices, and retail. Walk-in cooler service available.
Learn More →Smart thermostat installation, HVAC tune-ups, and preventive maintenance to cut energy bills.
Learn More →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 repair and installation.
Based in Joliet — serving Will, Cook & DuPage Counties, IL.
Get a free estimate or schedule service. We respond quickly for Darien area customers.