Recent HVAC Installations & Repairs by Our Team
Real work from our own jobs — air conditioning, heating, ductless and commercial HVAC.
Furnace, AC and emergency HVAC service for Downers Grove 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 Downers Grove. We're based nearby in Joliet and treat every Downers Grove 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 Downers Grove and the surrounding DuPage County communities.
Downers Grove is an established DuPage community with many mid-century and older homes, mature neighborhoods, and historic districts. Older houses bring their own HVAC realities: aging furnaces and boilers, tight or original ductwork, and rooms that never quite get comfortable. We're experienced with all of it.
That includes furnace and boiler repair and replacement, ductless mini-splits for homes without central air or with hard-to-reach rooms, AC service, and fast emergency response when the heat fails on a cold Illinois night. We quote before we start, every time.
Serving Downers Grove (60515, 60516) in DuPage County — same-day and 24/7 emergency HVAC, in English or Spanish.
📍 Serving Downers Grove: 60515, 60516 · DuPage County — 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 Downers Grove 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 Downers Grove. Same-day & 24/7 emergency.
Free estimates, no hidden fees, upfront quotes before work begins.
English & Spanish service for all Downers Grove customers.
Fully licensed, certified, and insured HVAC professionals.
Local business treating every Downers Grove 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 Downers Grove, so we offer same-day and 24/7 emergency response across 60515, 60516.
Ductless mini-splits are ideal for older homes without ductwork: they add efficient cooling (and heating) room by room without major remodeling. We'll walk you through placement and sizing in plain language.
Yes — free estimates on new system installations for Downers Grove 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 Downers Grove-area customers.