Marshall began his career in the heating industry in 1968 as an oil truck driver in South Boston. From there, he went on to become a heating service technician, independent heating contractor, and oil company owner.

In 1987, he began teaching oil burner technology at New England Fuel Institute. Marshal joined Atlantic Petroleum as a Field Supervisor in 1990, coordinating installations and service, as well as troubleshooting with field technicians.

Two years later, Marshall became a boiler company representative in eastern Massachusetts. During that period, he gained a reputation as a hands-on instructor. Shifting gears in 1998, he went to work for pump manufacturer Suntec Industries, covering all of New England and New York. While there, he developed a training program to teach pump technology to technicians.

Marshall served as president of the Boston Chapter of NAOHSM from 1988 to 1996.  He’s is a recipient of the OESP Hugh McKee award for outstanding contributions to the oil and energy industry.

According to Taco, the Dan Holohan Lifetime Contribution to Comfort Award is given annually to an HVAC professional or company that has made a substantial contribution to comfort technology, advancement, or training while displaying the exceptional good humor and love of people exhibited by Dan Holohan throughout his long career. Past award winners include Dan Holohan and Robert Bean.