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  • O'Brien Chamber Services, Inc.
    O'Brien Chamber Services, Inc.
    (410) 612-0994
    2538 Sinsko Ln, 21085-2218  Joppa

    O'Brien Chamber Services was formed by Pat O'Brien. Pat has worked in the HVACR field since 1986. He was factory trained by Thermotron and was a field service engineer there for over 14 years. During his time at Thermotron he covered Maryland, Washington D.C., Virginia, Delaware and southern Pennsy…