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42 Years
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Emergency
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Trusted HVAC Installation & Repair Services in Grayslake
Founded in 1984, Northern Air Systems has been a trusted provider of heating, ventilation, and air conditioning solutions for residential, commercial, and industrial clients across Chicagoland. Our comprehensive services include system installation, repair, and maintenance, utilizing premium equipment from brands like Trane, Heil, and Triangle Tube. With factory-trained technicians and an in-house sheet metal shop, we ensure precise installations and tailored comfort systems that meet the unique needs of every home and business. Our commitment to quality extends to 24/7 emergency service, rigorous maintenance protocols, and cutting-edge indoor air quality solutions.

We prioritize long-term client relationships by delivering reliable, energy-efficient systems that enhance comfort and safety. Our expertise in radiant heating, snow melt systems, and commercial ventilation underscores our dedication to innovation and technical excellence. With decades of local experience, we combine personalized service with industry-leading expertise to address both immediate and long-term HVAC needs.
Services
Furnace Repair AC Installation Boiler Maintenance Ductwork Fabrication Radiant Heating Commercial Ventilation UV Air Purification Thermostat Upgrades Snow Melt Systems Indoor Air Quality
Details
  • Year established: 1984
Highlights and features
  • Factory-trained technicians with 40+ years of local experience
  • 24/7 emergency service for urgent HVAC needs
  • Custom sheet metal fabrication for precise installations
  • Specialized expertise in radiant heating and snow melt systems
  • Comprehensive maintenance programs for system longevity
Services
Furnace Repair
Our certified technicians provide prompt furnace repair services for all makes and models. We diagnose and fix heating system issues with precision, using genuine replacement parts to restore optimal performance. Emergency repair availability ensures minimal downtime during cold weather.
AC Installation
We install high-efficiency air conditioning systems from leading manufacturers like Trane and Amana. Our experts match system capacity to your property's needs for maximum comfort and energy savings. Includes proper refrigerant charging and ductwork optimization.
Boiler Maintenance
Preventive maintenance services for cast iron and modulating condensing boilers. Our technicians perform comprehensive inspections, combustion analysis, and efficiency tuning to ensure reliable operation of radiant heating and radiator systems.
Commercial Ventilation
Design and installation of commercial ventilation systems for warehouses, restaurants, and office buildings. Services include make-up air systems, kitchen hood ventilation, and computer room cooling solutions tailored to specific operational requirements.
Snow Melt Systems
Custom snow and ice melting systems for driveways, walkways, and loading docks. We install hydronic radiant heating solutions using durable components from Viega and Caleffi to ensure safe, snow-free surfaces during winter months.
Questions
What HVAC services do you offer for residential customers?
We provide complete residential HVAC solutions including furnace and AC repair, boiler maintenance, indoor air quality systems, and energy-efficient equipment installations.
Are emergency HVAC services available after hours?
Yes, we offer 24/7 emergency service for urgent heating and cooling issues with response times prioritized for critical system failures.
Do you service commercial HVAC systems?
Yes, we specialize in commercial HVAC maintenance, rooftop unit servicing, and specialized ventilation systems for restaurants and warehouses.
What financing options are available for new HVAC systems?
We offer flexible financing programs for qualifying customers to help make energy-efficient system upgrades more affordable with manageable monthly payments.
Can you install radiant heating systems?
Yes, we design and install hydronic radiant heating systems for both residential and commercial applications including in-floor heating and snow melt systems.
Do you provide maintenance agreements for HVAC systems?
We offer comprehensive maintenance plans with regular system inspections, filter replacements, and priority service scheduling to extend equipment lifespan.