A broken furnace in an Illinois winter is an emergency. Our licensed technicians provide fast furnace diagnosis and repair in Naperville and DuPage County — including 24/7 emergency service.
When your furnace stops working in a cold Illinois winter, you need a fast, reliable response. Heavy Duty Heating & Cooling provides expert furnace repair throughout Naperville, IL. We diagnose and repair all types of gas furnaces and heating systems.
We service all furnace brands. Our techs carry common replacement parts on their vehicles, enabling same-day repairs for most Naperville furnace problems. Clear diagnostics and honest pricing — no pressure, no upselling.
Faulty igniters are the #1 cause of furnace failure. We replace them quickly to restore heat fast.
A cracked heat exchanger is a safety hazard. We inspect and replace damaged ones to protect your family.
If your furnace runs but doesn't distribute heat, the blower motor may be failing. We diagnose and repair it.
Malfunctioning gas valves, control boards, and limit switches — diagnosed and fixed right.
A dirty flame sensor causes short-cycling. This quick cleaning often restores normal operation immediately.
Cleaning, inspection, and adjustments to keep your system safe and efficient all winter.
Same-day & emergency service in Naperville and DuPage County.
Free estimates, no hidden fees, upfront quotes before work begins.
English & Spanish service for all Naperville customers.
Fully licensed, certified, and insured HVAC professionals.
Local business treating every Naperville customer like a neighbor.
We stand behind every job with a satisfaction guarantee.
Common causes: tripped breaker, dirty flame sensor, faulty igniter, or thermostat issue. Call us for a fast diagnostic.
Most repairs range $150–$500. Free estimates, honest pricing before work begins.
If your furnace is under 15 years old, repair is usually the better value. We'll give you an honest recommendation.
Yes — 24/7 emergency furnace repair for Naperville and DuPage County, especially in extreme cold.
Based in Joliet — serving Will, Cook & DuPage Counties, IL.