Installing a new AC system is a major investment. Our certified technicians ensure your new system is properly sized and optimized for your Darien home or business.
A correctly sized AC system is the key to comfort and low energy bills in Darien, IL. Heavy Duty Heating & Cooling provides expert AC installation for homes and businesses throughout Darien and DuPage County.
Every installation starts with a free in-home assessment for correct system sizing. Our licensed technicians handle the full installation — ductwork, electrical, testing — with a satisfaction guarantee.
Correct AC sizing for your Darien home using Manual J calculations — not guesswork.
Full installation of split-system central AC from top brands, optimized for your home.
We inspect existing ductwork for leaks and damage that could reduce your new system's efficiency.
Ductless systems for homes without ductwork, additions, or rooms needing independent climate control.
All electrical work and permits required for new AC installation in Darien, IL handled for you.
Full system test and thermostat walkthrough before we leave your Darien home.
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 job with a satisfaction guarantee.
New central AC typically runs $3,000–$7,000 installed. We provide free estimates.
Most installations complete in one day.
We install all major brands and recommend the best option for your needs and budget.
Contact us to discuss payment options available for Darien area customers.
Based in Joliet — serving Will, Cook & DuPage Counties, IL.