Mark Olis is the best! he helped me with an HVAC solution last year. And I am reaching out to him again to assist with a hot water heater replacement very soon. Excellent work and an upstanding business owner. Thank Mark for all you do!
Scott Gretz
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November 26, 2024
Excellent experience. Mark is on time and very knowledgeable. From inquiry, to quote to install the process was smooth. Great to support local independent contractors that live and work in our local community.
Mary and Chad Russell
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March 20, 2025
Just had Mark over here and he did an amazing job with a fairly complex situation. He was great, guided us through different solutions and set up the expectations so we knew which direction to go. Also was very well priced. Thank you!
Bobby Block
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December 18, 2024
Mark was very responsive. Did an amazing job. There was a minor issue after the fact and he remedied it within 30 minutes. I would 100% recommend Mark and plan to use his services in the future.
Diane Savin
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February 19, 2024
In January, my heat pump froze up due to a leak. Since my HVAC system was almost 14 years old, I decided to have both the air handler and heat pump replaced. Mark quoted me a more reasonable price ($4000 less) than larger companies. I appreciated his expertise and professionalism before, during and after the installation process. I highly recommend Mark Olis for your HVAC needs.
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484 E Carmel Dr, Carmel, IN 46032, USA
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Mark Olis is the best! he helped me with an HVAC solution last year. And I am reaching out to him again to assist with a hot water heater replacement very soon. Excellent work and an upstanding business owner. Thank Mark for all you do!
Excellent experience. Mark is on time and very knowledgeable. From inquiry, to quote to install the process was smooth. Great to support local independent contractors that live and work in our local community.
Just had Mark over here and he did an amazing job with a fairly complex situation. He was great, guided us through different solutions and set up the expectations so we knew which direction to go. Also was very well priced. Thank you!
Mark was very responsive. Did an amazing job. There was a minor issue after the fact and he remedied it within 30 minutes. I would 100% recommend Mark and plan to use his services in the future.
In January, my heat pump froze up due to a leak. Since my HVAC system was almost 14 years old, I decided to have both the air handler and heat pump replaced. Mark quoted me a more reasonable price ($4000 less) than larger companies. I appreciated his expertise and professionalism before, during and after the installation process. I highly recommend Mark Olis for your HVAC needs.