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50+ Years
experience
Emergency
services
Your Trusted HVAC Partner in Chicago
Since 1953, Guardian Heating and Cooling has been a trusted provider of HVAC solutions for residential and commercial clients across Chicagoland. Our family-owned business combines decades of expertise with a commitment to personalized service, ensuring every client receives tailored heating, cooling, and air quality solutions. Our team of NATE-certified technicians delivers factory-trained precision for installations, repairs, and maintenance. We prioritize customer education to empower informed decisions while maintaining unmatched warranties and proactive maintenance programs. With two locations in Chicago and Northbrook, we serve over 25 communities including Evanston, Skokie, and Winnetka.

Our investment in advanced technology and continuous technician training enables efficient diagnostics and cutting-edge system upgrades. From emergency repairs to energy-efficient replacements, we uphold a 73-year legacy of reliability and customer-centric service. Our satisfaction guarantee reflects our dedication to excellence in every interaction. We actively participate in industry rebate programs and offer flexible financing options to make comfort solutions accessible. This combination of technical expertise, local knowledge, and service excellence has earned us a 4.9-star reputation in the communities we serve.
Services
Air Conditioning Installation Heating Repair Boiler Services Ductless HVAC Commercial HVAC Air Quality Solutions Maintenance Plans Emergency Service System Replacement Energy Efficiency Upgrades
Details
  • Year established: 1953
Highlights and features
  • 73 years of HVAC expertise serving Chicagoland since 1953
  • Factory-trained technicians with NATE certification
  • 24/7 emergency service with rapid response times
  • Flexible financing options and manufacturer rebates available
  • Comprehensive warranties on all installations and repairs
What people say
Professional technicians Prompt service Fair pricing Excellent communication Long-term reliability
Services
Air Conditioning Installation
Our certified technicians provide complete air conditioning installation services using the latest energy-efficient systems. We offer personalized system design, proper sizing calculations, and seamless integration with existing infrastructure. Our installations include manufacturer warranties and performance guarantees to ensure optimal cooling efficiency for Chicago's hot summers.
Heating Repair
24/7 emergency heating repair services for all makes and models. Our rapid response team carries common replacement parts for same-day repairs. We diagnose issues using advanced diagnostic tools while providing transparent pricing and repair options to restore warmth quickly during Chicago winters.
Boiler Services
Comprehensive boiler maintenance, repair, and replacement services for residential and commercial properties. Our specialists handle oil-to-gas conversions, efficiency upgrades, and emergency boiler repairs. We ensure safe operation through thorough inspections and code-compliant installations.
Ductless HVAC
Expert installation and service for ductless heating and cooling systems. We provide zone-specific climate control solutions ideal for home additions or commercial spaces. Our technicians optimize system placement and settings for maximum efficiency and comfort.
Commercial HVAC
Tailored HVAC solutions for commercial properties including system design, preventive maintenance, and emergency repairs. Our commercial team handles large-scale installations and service contracts to maintain optimal indoor environments for businesses across Chicagoland.
People
John
Technician
John is a NATE-certified HVAC technician with over 15 years of experience in residential system maintenance and repairs. He specializes in diagnostic troubleshooting and energy efficiency optimization for Chicago homeowners.
Jonathan
Sales Consultant
Jonathan serves as a senior sales consultant, providing customized HVAC solutions for residential clients. With extensive product knowledge, he helps homeowners select systems that balance comfort needs with budget considerations.
Questions
What HVAC services do you offer?
We provide full-service HVAC solutions including air conditioning, heating, boiler services, ductless systems, commercial HVAC, and indoor air quality improvements across Chicagoland.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency HVAC repair services with rapid response times for urgent heating and cooling issues.
What areas do you service?
We serve Chicago and surrounding suburbs including Northbrook, Skokie, Wilmette, Glenview, and 20+ other communities in Cook and Lake Counties.
Are financing options available?
Yes, we offer flexible financing options including no-interest plans up to 72 months for qualifying HVAC system replacements.
How can I schedule service?
Schedule through our website, call 312-818-2840, or request appointments via our mobile service units for immediate assistance.
Do you provide maintenance plans?
Yes, our Shield of Protection maintenance plans include seasonal system checkups, priority service scheduling, and exclusive repair discounts.
Reviews (1)
Dale Valaskovic
Oct 14, 2018 Report
We like Frank. He does a thorough job. I like the way he was able to send us something that said everything he did. We like the service contract we.