JEC Service Company, Inc.

JEC Service Company is a Waltham-area mechanical contractor focused on commercial, institutional, industrial, and multi-family HVAC work. Its own site describes HVAC piping, sheet metal, electrical systems, maintenance, and emergency service throughout Greater Boston, while Procore lists the company as a Waltham specialty contractor and veteran-owned. The available customer record is small but specific. A June 2026 Google reviewer praised a combi-unit installation as professional and clean, with questions answered and fair pricing. A 2022 reviewer called the company friendly. Industry coverage also identifies JEC's laboratory HVAC projects and its sheet-metal fabrication facility. There is an important follow-up concern: a May 2025 Google reviewer said JEC did not return to finish work and was unresponsive to calls and promised rescheduling. Confirm the completion schedule, service response process, and escalation contact before signing a maintenance or repair agreement. JEC looks best suited to commercial or institutional HVAC and mechanical projects that need piping, ductwork, fabrication, electrical support, or ongoing service. Confirm the applicable license and the scope of emergency coverage in writing.