Compressed Air Field Service Technician

Environmental Systems Company, 395 Daniel Webster Highway Units 1-2, Merrimack, New Hampshire, United States of America

Posted Friday, July 10, 2026 at 4:00 AM

Compressed Air Field Service Technician

Compressor Energy Services ( CES) part of Fidelity Building Services Group | Northeast (MA / southern NH) | Full-time, non-exempt (up to $40 + hourly depending on experience)

CES keeps customers compressed-air systems running, and the field service technician is the person who makes that real. You’re in the field every day — performing preventive maintenance, diagnosing and repairing compressors, dryers, and air-system equipment, and responding when a customer goes down. The techs are the face of CES, and the service you deliver is what earns the next agreement.

Perform scheduled preventive maintenance on air compressors — rotary screw, reciprocating, and oil-free — along with dryers, filters, controls, and related air-system equipment.

Diagnose and repair mechanical, electrical, and air-system problems in the field, and respond to reactive and emergency service calls.

Install and commission compressors, dryers, piping, and ancillary equipment.

Use a phone or tablet to document each visit — before-and-after photos, work performed, parts used, and recommendations — and clearly explain to the customer what was done and what’s coming next.

Spot additional needs — leaks, pressure drops, failing components — and flag them so they become the next job.

Keep your service vehicle, tools, and parts stocked and ready.

Follow all safety procedures and maintain a strong safety record.

You won’t be out there alone. CES has a lead technician and trainer to bring you up to speed, an applications and engineering team for system sizing and the tougher technical calls, and a coordinator handling scheduling and parts so you can stay focus on the work. We believe in developing our people toward their own goals — whatever direction you want to grow, we’ll help you build the skills to get there.

Hands‑on experience servicing compressed‑air systems, industrial machinery, HVAC or comparable mechanical equipment.

Solid mechanical and electrical troubleshooting — comfortable with hand tools, gauges, and diagnostics.

Able to read schematics and equipment manuals.

Valid driver’s license and a clean driving record — you’re in the field every day.

Able to lift and move equipment and work in plant and mechanical‑room environments.

Compressor Energy Services (CES), A Fidelity Company, has over 30 years in the compressed air systems industry, specializing in optimizing the efficiency of the supply and demand side of compressed air systems in large industrial facilities. CES maintains a longstanding commitment to offering unique professional solutions, providing turnkey design and implementation services and guaranteed energy savings that result in a typical return on investment of 65%, resulting in simple paybacks of less than two years.

CES has the ability to look at compressed air solutions through a variety of different lenses, including system efficiency, end uses of compressed air, heat recovery, and core process optimization.

Environmental Systems Company, 395 Daniel Webster Highway Units 1-2, Merrimack, New Hampshire, United States of America