847-650-6444
EPA Certified Technicians
10+ Years Per Technician
45-Day Parts & Labor Warranty
Licensed, Bonded & Insured
Emergency Response Available
83 Cities — Chicago to Milwaukee
McDonald's · Subway · 7-Eleven · Jimmy John's
Refrigerant Leak Specialists
EPA Certified Technicians
10+ Years Per Technician
45-Day Parts & Labor Warranty
Licensed, Bonded & Insured
Emergency Response Available
83 Cities — Chicago to Milwaukee
McDonald's · Subway · 7-Eleven · Jimmy John's
Refrigerant Leak Specialists

Furnace Repair & Installation Services

Delfino Refrigeration specializes in furnace repair and installation for both commercial and residential customers across the Chicago to Milwaukee service area. When winter temperatures in northern Illinois and southeastern Wisconsin drop well below freezing, a reliable furnace isn’t a luxury — it’s a necessity for your family’s comfort and your business’s operation. Whether your gas furnace won’t ignite, your electric furnace is blowing cold air, or you need a complete furnace replacement, Delfino Refrigeration’s technicians deliver fast, dependable furnace repair service.

We service and install all types of furnaces including gas furnaces, electric furnaces, oil furnaces, and commercial heating systems. Our EPA-certified technicians can diagnose any furnace problem — from ignitor and flame sensor failures to blower motor issues and heat exchanger cracks — and provide honest recommendations about whether repair or replacement is the best investment for your situation.

Furnace Repair Services

  • Gas furnace repair — ignitor, flame sensor, gas valve, burner assembly
  • Electric furnace repair — heating elements, sequencers, contactors
  • Furnace blower motor repair and replacement
  • Furnace heat exchanger inspection and repair
  • Furnace thermostat diagnostics and replacement
  • Furnace ductwork inspection and repair
  • Furnace filter replacement and airflow optimization
  • Furnace electrical component diagnostics
  • Furnace pilot light and electronic ignition repair
  • Commercial furnace repair for businesses of all sizes
  • New furnace installation — gas and electric
  • Furnace replacement and system upgrades

Furnace Preventive Maintenance

Annual furnace maintenance is essential for safe, efficient operation — especially in our harsh northern Illinois and Wisconsin winters. Delfino Refrigeration’s furnace maintenance service includes burner inspection and cleaning, heat exchanger inspection for cracks (a critical safety check), blower motor lubrication and testing, air filter replacement, thermostat calibration, flue and venting inspection, and carbon monoxide testing. Having your furnace professionally maintained each fall before heating season begins ensures reliable performance when you need it most.

Furnace Repair — Frequently Asked Questions

Why is my furnace blowing cold air?

A furnace blowing cold air can be caused by several issues: a dirty or clogged air filter restricting airflow, a malfunctioning thermostat, a failed ignitor or flame sensor (gas furnaces), blown heating elements (electric furnaces), a tripped limit switch, or blower motor issues. Delfino Refrigeration’s furnace repair technicians can quickly diagnose the cause and restore your heating system to full operation.

We recommend annual furnace maintenance, ideally in early fall before heating season begins. Annual furnace service catches developing problems before they become mid-winter emergencies, ensures safe operation (including carbon monoxide checks), and keeps your furnace running at peak efficiency to minimize energy bills during the coldest months.

Consider furnace replacement if your system is over 15-20 years old, requires frequent repairs, your energy bills have been steadily increasing, the heat exchanger is cracked, or repair costs exceed 50% of the cost of a new furnace. Delfino Refrigeration provides honest assessments and will never recommend replacement when a repair will effectively solve the problem.

Yes. A furnace failure in a northern Illinois or Wisconsin winter is an emergency, and Delfino Refrigeration treats it that way. We offer emergency furnace repair service for both residential and commercial customers. Call 847-650-6444 and let us know your furnace is down — we’ll prioritize getting a technician to you as quickly as possible.

Schedule Your Service Today

Contact Delfino Refrigeration today for a free estimate on any of our commercial or residential HVAC and refrigeration services. Our EPA-certified technicians are ready to help with repairs, maintenance, and installations across our full service area from Chicago to Milwaukee.

847-650-6444
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Service Area
  • Chicago to Milwaukee
  • Lake County IL
  • McHenry County IL
  • Fox Valley/Elgin IL
  • Kenosha, Racine & Milwaukee Counties WI