Axcelis Technologies


IDC Architects

MEP Engineer

NV5 Andover

Mechanical Contractor

ATCO Group

Project Profile
Square Feet


No of Units



42,000 CFM & 20,000

Hvac Technology

Axcelis Technologies

Axcelis Technologies is a global leader in innovative, high-productivity ion implant systems designed to meet the specific needs of semiconductor manufacturers. After 25 years, the rooftop unit (RTU) on its Boston headquarters began to show signs of aging and posed a threat to the company’s stringent temperature control requirements. Upon investigating replacement solutions, the engineers leading the project determined that the cooling capacity had to be increased by approximately 30 nominal cooling tons, without adding to the current weight of the RTU.

Critical Systems analyzed Axcelis’ situation to identify the only manufacturer able to meet these criteria. The new unit combined aluminum construction and a wrap-around heat pipe to increase dehumidification capacity. The project was delivered on time and on budget, with unrivalled emphasis on construction quality and performance.

Critical Systems proudly partners with industry leaders to produce demonstrable results in the building market.



New England