Business Details
42 Years
experience
Emergency
services
Trusted HVAC Services in Grayslake, IL
Founded in 1984, Northern Air Systems has been serving residential, commercial, and industrial clients across Chicagoland with comprehensive heating and cooling solutions. Our expertise spans installation, repair, and maintenance of forced air systems, boilers, humidifiers, air filters, UV lights, and thermostats. With an in-house sheet metal shop, we fabricate custom ductwork and fittings to ensure professional installations tailored to each client's needs. We partner with leading manufacturers like Trane, Heil, Amana, and Triangle Tube to deliver high-quality equipment and systems. Our factory-trained technicians adhere to the highest industry standards, utilizing best practices for optimal system performance and customer comfort.We prioritize holistic system design, ensuring each component aligns with the unique requirements of homes and businesses. Our commitment to excellence extends to 24/7 emergency service, providing reliable support whenever needed. Through decades of experience, we have built a reputation for technical expertise, personalized service, and long-term customer satisfaction. Our approach combines advanced technology with hands-on craftsmanship to create efficient, durable comfort solutions. Whether upgrading existing systems or designing new installations, we focus on enhancing livability and operational efficiency for every client.
Services
Furnace Repair
Boiler Installation
Air Filter Systems
Commercial HVAC Service
Radiant Floor Heating
Ductwork Fabrication
Thermostat Replacement
Humidifier Installation
Ventilation Solutions
Emergency HVAC Service
Details
- Year established: 1984
Highlights and features
- We have factory-trained technicians certified by leading HVAC manufacturers
- Our in-house sheet metal shop enables custom fabrication for precise installations
- We offer 24/7 emergency service with rapid response times
- We specialize in whole-system design for optimal efficiency and comfort
- We use premium equipment from trusted brands like Trane and Triangle Tube
Services
Furnace Repair
Our factory-certified technicians diagnose and repair all furnace makes and models. We perform comprehensive system checks, replace worn components with genuine parts, and optimize efficiency. Emergency repair services ensure rapid restoration of heating during critical cold-weather periods.
Boiler Installation
We install high-efficiency boilers from Triangle Tube, Lochinvar, and Weil McLain for residential and commercial applications. Our team handles complete system integration, including radiators, piping, and smart controls for optimal performance and energy savings.
Air Filter Systems
We install advanced air filtration systems from Trane and Honeywell, including HEPA filters and UV light purification. These systems remove contaminants, allergens, and pathogens to create healthier indoor environments for homes and businesses.
Commercial HVAC Service
Our commercial division maintains and repairs rooftop units, warehouse heaters, and specialized ventilation systems. We offer preventive maintenance programs to extend equipment life, reduce downtime, and maintain operational efficiency for businesses.
Radiant Floor Heating
We design and install hydronic radiant floor heating systems using Viega and Caleffi components. These systems provide even, energy-efficient warmth for residential and commercial spaces, including snow/ice melting applications for walkways and driveways.
Questions
What HVAC services do you offer for residential customers?
We provide complete heating and cooling solutions including furnace/boiler installation, air filter systems, thermostat replacement, and 24/7 emergency repair services for homes.
Do you service commercial HVAC systems?
Yes, we maintain and repair commercial systems including rooftop units, warehouse heaters, restaurant ventilation, and computer room cooling systems with preventive maintenance programs.
Are your technicians certified?
All our technicians receive factory training from major HVAC manufacturers and maintain current certifications for proper system installation and service.
What areas do you serve?
We primarily serve Chicagoland including Lake County, with Grayslake as our operational base for residential and commercial HVAC services.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency service with trained technicians available to address urgent heating and cooling needs at any time.
What makes your HVAC installations different?
We combine factory-certified expertise with custom sheet metal fabrication and whole-system design to ensure optimal efficiency, comfort, and longevity for each installation.
Reviews (4)
Dee Ferrigan
Jun 26, 2024
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The answering service was very polite and helpful. Scott called back within 5 minutes and arrived within a half hour of my initial call. He got the unit running and will be back to complete the repairs. I highly recommend this company.
Lou Gebler
Sep 23, 2021
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We've used Northern Air Systems for several years now for HVAC maintenance and have been very happy with the service they provide. We decided to replace our furnace and AC this year. We had a competitor come out and give us a quote and the saleperson was mostly interested in selling a system and didn't take any time to look at the ducts, etc. Bob from Northern Air came out to give us a bid and took measurements and made drawings before trying to sell anything.
He explained everything and answered all my questions, and even made some recommendations for more efficient ductwork at a later time, if we wanted. The installers of the unit arrived on time and worked until the unit was installed. They also answered questions we asked as they were installing the furnace and AC. Bob has been very responsive to questions I had about rebates. The installed thermostat has lots of features that I've never worked with before and Bob has arranged a time to come out again and go over all the bells and whistles.
He explained everything and answered all my questions, and even made some recommendations for more efficient ductwork at a later time, if we wanted. The installers of the unit arrived on time and worked until the unit was installed. They also answered questions we asked as they were installing the furnace and AC. Bob has been very responsive to questions I had about rebates. The installed thermostat has lots of features that I've never worked with before and Bob has arranged a time to come out again and go over all the bells and whistles.
Jill Schwartz
May 04, 2021
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We've been having Northern Air Systems taking care of our HVAC system for many years, and I have to tell you they are GREAT! No matter which rep Kate (who herself is proficient, professional and really nice to boot) schedules to come out for service, the guys are all knowledgeable, efficient, timely and, well, as I said GREAT! Try them; you'll like -- no, you'll LOVE them! Jill
John Basten
Apr 26, 2021
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Our furnace stopped working completely. Scott the technician was awesome. He diagnosed the problem in our furnace and made the necessary repairs in less the. 30 minutes. I am always impressed with Northern Air Systems service. Thanks, I would definitely recommend these guys to anyone. Service: Repair HVAC
