Recent HVAC Installations & Repairs by Our Team
Real work from our own jobs — air conditioning, heating, ductless and commercial HVAC.
AC installation, furnace and mini-split service for New Lenox homes and businesses. Licensed, insured, bilingual EN/ES. Free estimates on new installs.
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 New Lenox. We're based nearby in Joliet and treat every New Lenox 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 New Lenox and the surrounding Will County communities.
New Lenox is one of Will County's fast-growing communities, with many homes built during the 1990s and 2000s. The AC condensers and furnaces from that growth are now reaching 15 to 25 years old — the stretch where efficiency drops, repairs add up, and a planned replacement beats an emergency breakdown in July or January.
We make the repair-or-replace call with you honestly, install properly sized high-efficiency systems, and add ductless mini-splits where ductwork can't reach. Up-front quotes, no surprise charges, and clean work.
Serving New Lenox (60451) from nearby Joliet — same-day and 24/7 emergency HVAC, in English or Spanish.
📍 Serving New Lenox: 60451 · Will 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 New Lenox 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 New Lenox. Same-day & 24/7 emergency.
Free estimates, no hidden fees, upfront quotes before work begins.
English & Spanish service for all New Lenox customers.
Fully licensed, certified, and insured HVAC professionals.
Local business treating every New Lenox 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 New Lenox, so we offer same-day and 24/7 emergency response across 60451.
Typically 15–20 years for AC and 15–25 for a furnace, depending on maintenance. Many New Lenox homes from the 1990s–2000s building wave are in that window now, which is why planned replacements are smart before a peak-season failure.
Yes — free estimates on new system installations for New Lenox 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 New Lenox-area customers.