Reviews for On The Mark Heating and Air

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  • January 2026

    I’m a huge fan!! Mark, Kelsey, Chris, Omar and the entire On the Mark team are AMAZING! I’m a new homeowner and quickly discovered the HVAC system was in terrible shape. Faulty fuses caused my air conditioning to fail in the summer and my heat to go out in the winter! It was a nightmare! When I contacted On the Mark Heating and Air, everything changed. From the moment I met Mark, the owner, and his team, I knew I was in great hands. After several emergency repairs, we decided it was time to replace the entire system. Mark sat down with my wife and I to have an honest, straightforward conversation about my options and recommended the perfect high-efficiency system... read full review

  • September 2025

    Hey, your service guy was excellent. He's an excellent worker. He works hard very polite. I enjoyed him working on my phones. I hope that I keep on using guys. Thank you for everythanks.

  • September 2025

    Omar came over to perform our semiannual HVAC maintenance. He was very friendly and professional - he even did some extra cleaning of the area surrounding our HVAC system at no extra cost. We have been using On the Mark for a few years, and have always been very satisfied with the level of service we receive.

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    On The Mark Heating and Air

    2200 Stonington Ave Suite 110, Hoffman Estates

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