Celebrating 30+ Years of Service Excellence

Celebrating 30+ Years of Trusted Partnerships

Celebrating 30+ Years of Industry Leadership

A Brief Look At What We Do

Residential and Commercial HVAC-R, Facilities Repair & Maintenance,
and Coffee Roaster service and repair.
HVAC-R Service & Repair
Residential and Commercial Heating, Ventilation, Air Conditioning and Refrigeration.
Service, Installation, and Repairs.
Facilities Repair & Maintenance
HVAC-R, plumbing, electrical, building repairs and maintenance, commercial kitchen equipment repair, glycol beer system repairs.
Preventive Maintenance
Planned, scheduled maintenance and inspection to help keep your equipment running smoothly.
Coffee Roaster Repairs & Installation
Service, repair, and installation of commercial coffee roasters.


(847) 623-6700

24/7 Emergency Service


Serving the Greater Chicagoland area,
SE Wisconsin and NW Indiana



Our Reviews

Don’t just take our word for it.
Actual quotes from actual customers.

“I wanted to send you a quick letter of appreciation for stepping in to help me last week. Your team was prompt in responding to my request and went out of their way to understand my particular circumstance. You were able to schedule someone for a next-day fix, which was truly appreciated.”

“It is apparent that your team is running an honest business that really cares about its customers. You really took a difficult situation and made it better for my family and I. We are truly grateful. Keep up the great work!”

“Your men were so kind and thoughtful. It is so hard to find good workers who are clean-cut, know their jobs, and do it like they enjoy their work. I would recommend your company on the basis of these fine men. Thank you for sending them to do my work.”

“Thank you for everything! Your guys did a great job. I will be contacting you again for additional work.”

“So, that one hot day in a long time and guess whose AC broke down… This guy’s! Well the good news is it’s getting fixed by my favorite company, Northeast Illinois Heating & AC. These guys rock. Heating, Air and anything else you might need. Call these guys if you need anything fixed.”

“Thank you for the quick response to our problem. See you soon for the yearly checkup for our unit.”

“Thank you!! I appreciate the awesome service and work you provide for me.”

“Very prompt and efficient. My furnace went out and they came the same day I called to make sure it was up and running.”

“The fastest, most professional and expedient response for service that I have ever experienced! I have used their services for both heating and cooling emergencies and have always been extremely satisfied with the outcomes! They come highly recommended from me.”

“NIHAC gets the job done.”

EPA Certified Technicians

EPA Certified Technicians

Air Conditioning Contractors of America

Member of Air Conditioning Contractors of America


Member of Refrigeration Service Engineers Society (RSES)

Memberships and Certifications


(847) 623-6700
236 N. Genesee St. Waukegan, IL 60085



24-Hour Emergency Service

Serving the Greater Chicagoland, NW Indiana, and SE Wisconsin.

Northeast Illinois Service Company, Inc., 2023 © All Rights Reserved