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Service Area

On The Mark Heating and Cooling is based in Streamwood, IL, and serves residential and commercial customers throughout the area. Contact us today for your heating and cooling needs! 

We are proud to offer service in and around the following communities:

  • Addison
  • Arlington Heights
  • Barlett
  • Barrington
  • Bloomingdale
  • Carol Stream
  • Deer Park
  • East Dundee
  • Elgin
  • Itasca
  • Keeneyville
  • Lake Barrington
  • Lake Zurich
  • Medinah
  • Palatine
  • Rolling Meadows
  • Roselle
  • Schaumburg
  • South Barrington
  • Streamwood
  • West Dundee
  • Wheaton