Recent HVAC Installations & Repairs by Our Team
Real work from our own jobs — air conditioning, heating, ductless and commercial HVAC.
AC installation, furnace service, mini-splits and commercial HVAC for Frankfort 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 Frankfort. We're based nearby in Joliet and treat every Frankfort 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 Frankfort and the surrounding Will County communities.
Frankfort is known for its spacious custom and estate-style homes alongside newer subdivisions, and bigger homes bring a specific challenge: a system that's too small never keeps up, while one that's too big short-cycles, wastes energy, and wears out early. We take the time to size your system correctly and, where it makes sense, recommend zoning so the upstairs bedrooms and the main floor stay comfortable at the same time.
From the historic homes near downtown Frankfort to the newer builds off LaGrange Road and Route 30, we install and service high-efficiency AC and furnaces, ductless mini-splits for additions and finished spaces, and commercial HVAC for the shops and restaurants in town. We quote before we start and never push equipment you don't need.
Because we're based in nearby Joliet, we reach most of Frankfort quickly — including 24/7 for emergencies, in English or Spanish.
📍 Serving Frankfort: 60423 · 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 Frankfort 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 Frankfort. Same-day & 24/7 emergency.
Free estimates, no hidden fees, upfront quotes before work begins.
English & Spanish service for all Frankfort customers.
Fully licensed, certified, and insured HVAC professionals.
Local business treating every Frankfort 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 Frankfort, so we offer same-day and 24/7 emergency response across 60423.
It depends on square footage, layout, insulation and sun exposure — not just a rule of thumb. We perform a proper load calculation so your system is sized right, and for larger Frankfort homes we'll tell you honestly whether zoning is worth it.
Yes — free estimates on new system installations for Frankfort 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 Frankfort-area customers.