Reviews for PhD Heating & Cooling

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  • December 2025

    We have used PhD for our hvac system for over a year now. Top quality work, and reasonable prices. Phd fixed issues another hvac company couldn’t. I highly recommend phd and would take his work/service over any other hvac company. You won’t be disappointed with his response time and work.

  • December 2025

    PhD Heating & Cooling did an outstanding job on our boiler system. This was not a simple repair — several other companies either refused the job or could not properly diagnose the issue. The PhD team took the time to fully understand the problem and explained everything clearly before starting the work.

    They handled a very complex repair that required experience and real technical knowledge. The work took the entire day, and they continued working despite extremely cold weather conditions. What impressed us most was their persistence and attention to detail — they didn’t rush and didn’t leave until the system was operating correctly and... read full review

  • December 2025

    Our furnace stopped working suddenly tonight (Friday) and the weekend forecast was for below zero temps. After calling multiple companies who would not come out until a later date, PHD came out the same night. They were onsite within an hour and got the unit working very quickly. We were very impressed with their professionalism, promptness and concern for our situation. They are very knowledgeable. Outstanding service and value!!! We will definitely call them again!

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    PhD Heating & Cooling

    1016 W Jackson Blvd, Chicago

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