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50+ Years
experience
Emergency
services
Your Trusted HVAC Experts in Chicago
Citywide Supply and Service has built a reputation as one of Chicago's most trusted HVAC and refrigeration companies. Since 1966, we have provided reliable heating, cooling, and commercial refrigeration services to homes and businesses across the city. Our team of certified technicians brings over 100 years of combined experience, ensuring fast response times and expert craftsmanship for every project. We specialize in furnace repair, boiler service, air conditioning maintenance, walk-in cooler installations, and 24/7 emergency support.

Our commitment to Chicago-focused service means we understand local building systems and prioritize rapid, dependable solutions. Every job is backed by our satisfaction guarantee, reflecting our dedication to quality workmanship and community trust. From routine maintenance to critical repairs, we deliver lasting comfort solutions tailored to Chicago's unique needs.
Services
Heating Repairs AC Installations Commercial Refrigeration Preventive Maintenance Emergency Service
Details
  • Year established: 1966
Highlights and features
  • We offer 24/7 emergency HVAC and refrigeration service with rapid response times.
  • Our technicians are licensed, certified, and trained in the latest industry standards.
  • We guarantee upfront pricing with no hidden fees or surprises.
  • 100% customer satisfaction backed by our satisfaction guarantee.
  • Family-owned since 1966 with deep local expertise in Chicago's building systems.
What people say
24/7 availability Expert technicians Reliable repairs Fast response Satisfaction guaranteed
Services
Heating Repairs
We provide expert furnace, boiler, and water heater repairs across Chicago. Our certified technicians handle gas leaks, system tune-ups, and emergency heating failures with 24/7 availability. Using industry-leading equipment, we ensure fast, reliable fixes for residential and commercial properties. Annual maintenance programs improve efficiency and prevent costly breakdowns during winter months.
AC Installations
Our team installs high-efficiency air conditioning systems tailored to Chicago's climate. Services include central AC, ductless mini-splits, and commercial cooling solutions for offices and server rooms. We offer ENERGY STAR-rated units and smart thermostat integration to optimize energy savings while maintaining comfort during summer heatwaves.
Commercial Refrigeration
We specialize in restaurant, grocery store, and food service refrigeration systems. Services include walk-in cooler/freezer repairs, ice machine maintenance, and 24/7 emergency support to prevent inventory loss. Preventive maintenance plans ensure compliance with food safety regulations and extend equipment lifespan for businesses across Chicago.
Preventive Maintenance
Our preventive maintenance programs cover HVAC and refrigeration systems for homes and businesses. Annual or quarterly inspections identify potential issues before failures occur, improving system efficiency and longevity. Services include safety checks, coil cleaning, refrigerant level adjustments, and component testing to ensure optimal performance year-round.
Emergency Service
We provide round-the-clock emergency HVAC and refrigeration repairs. Our Chicago-only focus enables rapid response times for critical issues like furnace failures, AC outages, and commercial refrigeration breakdowns. Technicians are equipped to handle urgent repairs day or night, minimizing downtime and restoring comfort or business operations quickly.
People
Mitch Moore
Owner
Mitch Moore leads Citywide Supply and Service with over 40 years of HVAC and refrigeration expertise. He oversees operations, ensuring the company maintains its 1966-founded commitment to Chicago communities. Mitch prioritizes customer satisfaction and technical excellence in every service call.
Questions
Do you offer 24/7 emergency HVAC service?
Yes, we provide 24/7 emergency HVAC and refrigeration repairs across Chicago with rapid response times.
What heating systems do you service?
We repair and maintain furnaces, boilers, water heaters, and radiant heating systems for residential and commercial clients.
Do you install energy-efficient AC units?
Yes, we install ENERGY STAR-rated air conditioning systems and smart thermostats to improve energy efficiency.
What commercial refrigeration services are available?
We service walk-in coolers, reach-in units, ice machines, and food service equipment with 24/7 emergency support.
Do you offer preventive maintenance plans?
Yes, we provide quarterly or annual maintenance programs to extend equipment life and prevent breakdowns.
What areas of Chicago do you serve?
We serve all Chicago neighborhoods including North Side, West Side, South Side, and surrounding suburbs.
Reviews (4)
Dan White
Jun 03, 2022 Report
We have 2 furnaces and 2 air conditioning units. And right when the weather is bouncing back and forth between cold and hot, one of each had a problem. I called Citywide Supply and Service and spoke to Mitch Moore Jr. Mitch was great and he was out the next day to look at the problems for both units. He let us know what was wrong and we scheduled the repairs for a few days later. It rained the next day so his outside job was cancelled and he called to see if he could come over to fix our problems. Mitch and his assistant Al were soon over at our house and fixed both problems within a couple of hours.

This is the second time in two years that Citywide Supply and Service really came through and helped us out in a pinch. I highly recommend Citywide Supply and Service and strongly believe you will too if you make them your go to if you make them your heating and cooling issues.
Abe Miller
Apr 17, 2022 Report
No idea what may have been going on, but despite the 24/7 guarantee on their site, no one answered at ~10pm and voicemail was full. I get the world has been upended and I hope all are OK, but doesn't take much to change a voicemail or put a sign on a door. Again, I hope all is well.
Kate Leinar Delos Santos
Feb 26, 2022 Report
My furnace was not heating up on a thursday. Really glad it was just the furnace ignitor. They had it in stock so i was able to fix it right away. Mitch was very nice. They were the only place in jefferson park area that was a supply store and is selling parts. Home depot, lowes, menards and ace hardware only sells it online and would've taken at least 3 days to arrive.
Logan Tichy
Feb 15, 2022 Report
We just purchased our new home 3 days ago, and woke up for our furnace not working. In a frenzy, I called and spoke to Mitch. Even though they didn't have any open times to come service our furnace- I was able to talk about the problem and come and pick up parts to fix it myself! Now after a $65 part- We have heat! We are beyond great full for the service provided, education and knowledge provided!