Heating & A/C
Refrigeration
Piping and Sheet Metal Work
Refrigeration
Piping and Sheet Metal Work
Ventilation
Click Here
Residential
Commercial/Industrial
Click Here
Click Here

  • Knox Mechanical has been doing quality work at competitive prices since 1973.
  • Knox Mechanical has the background and expertise to do any project, whether it be residential, commercial, or industrial.
  • Every service we perform is covered by an extensive warranty, every brand we carry offers exceptional warranties.
  • 24 HOUR EMERGENCY SERVICE - EVERY DAY OF THE YEAR! Just call (708) 425-0993.
  • Not only are we licensed, bonded, and insured; we have degreed field engineers with years of practical experience.
  • We stock a large inventory of parts for all types of HVAC/R systems. Repairs are done in hours, not days. Our warhouse has a huge stock of residential furances and air conditioners for immediate or emergency installation
  • All technicians are certified and participate in our continuing education program to get your systems on line quicker.