Welcome to Giant HVAC, your local heating and cooling contractor

Trust us with your HVAC needs

If you need HVAC services, go with a reputable HVAC contractor. You'll appreciate working with us because:

  • We have over three decades of experience
  • We're a family owned and operated business
  • We can work at both commercial and residential properties
  • We're licensed and insured HVAC contractors

Our team will provide you with excellent customer service and quality results. Get a hold of us now to learn more about our commercial HVAC or residential HVAC serivces in Chicago, IL.

Check out our maintenance services

When you haven't experienced an issue with your HVAC unit for a while, it can be difficult to understand the value of regular maintenance. But it comes with numerous benefits. Consider getting our maintenance services because:

  • It'll improve your home's energy efficiency
  • It can help regulate your home's temperature
  • It'll save you bundles on repairs and replacements

We're confident that you'll appreciate the financial and practical benefits of our maintenance services.



  1. Replace air filter with standard 1" filter or clean
  2. Inspect for combustible material around furnace
  3. Thermostat - test for proper operation
  4. Ignition system - test for safe & proper operation
  5. Check for proper exhaust venting
  6. Test Safety & Control Circuits
  7. Clean and inspect burners
  8. Inspect heat exchanger and clean if necessary
  9. Clean flame sensor or pilot
  10. Test capacitors
  11. Measure and adjust gas pressure
  12. Check for natural gas leaks
  13. Inspect combustion air vents
  14. Electrical wiring - inspect and tighten connections
  15. Blower motor - check amps and blower wheel
  16. Measure supply/return temperature differential
  17. Test for carbon monoxide around furnace & from air stream
  18. Check smoke detector & carbon monoxide detector operation

Service Area

We provide our services to Chicago and all of the surrounding Chicagoland area, including: Arlington Heights, Barrington, Bartlett, Bedford Park, Bellwood, Bensenville, Berkeley, Berwyn, Blue Island, Bolingbrook, Bridgeview, Broadview, Brookfield, Buffalo Grove, Burbank, Burnham, Burr Ridge, Calumet Park, Chicago, Chicago Heights, Chicago Ridge, Cicero, Country Club Hills, Countryside, Crestwood, Deer Park, Deerfield, Des Plaines, Dixmoor, Dolton, Dundee, Elgin, Elk Grove Village, Elmwood Park, Evanston, Evergreen Park, Flossmoor, Ford Heights, Forest Park, Forest View, Frankfort, Franklin Park, Glencoe, Glenview, Glenwood, Golf, Hanover Park, Harwood Heights, Harvey, Hickory Hills, Hillside, Hinsdale, Hodgkins, Hoffman Estates, Holland, Hometown, Homewood, Indian Head Park, Inverness, Justice, Kenilworth, La Grange, Lansing, Lemont, Lincolnwood, Lynwood, Lyons, Markham, Matteson, Maywood, McCook, Melrose Park, Merrionette Park, Midlothian, Morton Grove, Mount Prospect, Niles, Norridge, North Riverside, Northbrook, Northfield, Northlake, Oak Forest, Oak Lawn, Oak Park, Olympia Fields, Orland Hills, Orland Park, Palatine, Palos Hills, Palos Heights, Palos Park, Park Forest, Park Ridge, Phoenix, Posen, Prospect Heights, Richton Park, River Forest, River Grove, Riverdale, Riverside, Robbins, Rolling Meadows, Roselle, Rosemont, Sauk Village, Schaumburg, Schiller Park, Skokie, Steger, Stickney, Stone Park, Streamwood, Summit, Thornton, Tinley Park, University Park, Westchester, Western Springs, Wheeling, Willow Springs, Wilmette, Winnetka, Woodridge, Worth, and more.
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