Recent HVAC Installations & Repairs by Our Team
Real work from our own jobs — air conditioning, heating, ductless and commercial HVAC.
Furnace, AC and ductless mini-split service for Lemont homes and businesses. Licensed, insured, bilingual EN/ES.
When your air conditioner quits on the hottest day of summer or your furnace won't start on a cold Illinois night, Heavy Duty Heating & Cooling responds fast to Lemont. We're based nearby in Joliet and treat every Lemont home and business with the same care we'd give our own family. Licensed, certified, and bilingual — English and Spanish.
We offer free estimates on new installations, fair pricing with no surprise charges, and 24/7 emergency availability across Lemont and the surrounding Cook, DuPage & Will Counties communities.
Lemont is a historic canal-and-quarry town with character to match: older homes near the historic downtown, houses built into the bluffs along the Des Plaines River valley, and newer subdivisions on the edges. Older and split-level homes often have heating and cooling challenges that a one-size-fits-all approach can't solve.
We're experienced with furnace and AC replacement in older homes, ductless mini-splits for additions, attics and hard-to-reach levels, and emergency service when something fails. We quote up front and explain the trade-offs honestly.
Serving Lemont (60439) across Cook, DuPage and Will Counties from nearby Joliet — same-day and 24/7 emergency HVAC, English or Spanish.
📍 Serving Lemont: 60439 · Cook, DuPage & Will Counties — and the wider Joliet area
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 Lemont 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 →Based in Joliet, fast response to Lemont. Same-day & 24/7 emergency.
Free estimates, no hidden fees, upfront quotes before work begins.
English & Spanish service for all Lemont customers.
Fully licensed, certified, and insured HVAC professionals.
Local business treating every Lemont customer like a neighbor.
We stand behind every repair and installation.
Based in Joliet — serving Will, Cook & DuPage Counties, IL.
★★★★★
5.0 out of 5 · 18 verified Google reviews
Real work from our own jobs — air conditioning, heating, ductless and commercial HVAC.
We're based in nearby Joliet, a short drive from Lemont, so we offer same-day and 24/7 emergency response across 60439.
Older and split-level homes often need zoning or a ductless mini-split to balance temperatures between levels. We'll assess your layout and recommend the most cost-effective fix — not the most expensive one.
Yes — free estimates on new system installations for Lemont homes and businesses. Call or text (815) 212-7662.
Sí. Brindamos servicio HVAC completo en inglés y español, desde la primera llamada hasta la factura final.
Get a free estimate or schedule service. We respond quickly for Lemont-area customers.