The M-Series

The M-Series

  • 100% Combustion Efficiency.
  • Up to 8,000 MBH Capacity
  • Up to 75,000 CFM
  • Natural Gas or Propane


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Gilley’s Heating and Air Conditioning has served the Northern illinois area since 1985. We serve the residential, service and replacement need, commercial service and replacement and any new construction as well. In September of 2022 Gilley's Heating & Air Conditioning was purchased by Area Mechanical to operate as the residential division. 

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