Commercial HVAC Service Technician

Commercial customers depend on their heating and cooling systems to keep employees comfortable, operations moving, and buildings functioning properly. They need a technician who can diagnose complex equipment, communicate clearly, and take ownership of every service call.

At Astacio Plumbing, Heating, Cooling & Electrical, we’re looking for an experienced Commercial HVAC Service Technician to provide service, repair, and preventive maintenance for a variety of commercial heating and cooling systems.

You’ll work independently in the field while receiving support from a knowledgeable office and operations team. This is an opportunity for a skilled technician who values quality workmanship, professional customer relationships, and continued technical growth.

If you’re dependable, technically strong, and ready to represent a trusted home and commercial services company, we want to talk to you.

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  Diagnose, service, repair, and maintain commercial heating and cooling systems.

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  Work on packaged rooftop units, split systems, chillers, heat pumps, boilers, and related commercial equipment.

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  Perform preventive maintenance, inspections, system testing, and operational evaluations.

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  Troubleshoot electrical, mechanical, refrigeration, airflow, hydronic, and control-system issues.

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  Clearly explain findings, recommended repairs, and next steps to customers.

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  Obtain customer authorization before performing additional work.

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  Collect payment on-site when appropriate.

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  Open and close jobs accurately within the electronic scheduling system.

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  Document arrival times, work performed, job completion, follow-up needs, and detailed service summaries.

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  Communicate parts, equipment, scheduling, and return-trip needs promptly to the office.

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  Maintain clean, organized, and professional vehicles and jobsites.

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  Take responsibility for assigned trucks, diagnostic tools, equipment, uniforms, and inventory.

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  Train apprentices in the field and lead by example through safe, professional work practices.

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  Attend required technical training, team meetings, and company meetings.

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  Protect company and customer information and maintain appropriate confidentiality.

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  Build positive working relationships with customers, coworkers, apprentices, and leadership.

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  Receive and implement coaching and feedback professionally.

• Previous commercial HVAC service, maintenance, and repair experience.

• Experience with packaged rooftop units, split systems, chillers, heat pumps, boilers, and related commercial systems.

• Strong diagnostic and troubleshooting skills.

• Knowledge of refrigeration, electrical, airflow, hydronic, combustion, and control systems.

• Ability to independently manage service calls from diagnosis through completion.

• Ability to read wiring diagrams, equipment specifications, and technical documentation.

• Strong communication and customer service skills.

• Professional appearance and demeanor.

• Ability to provide clear, complete, and timely service documentation.

• Willingness and ability to train apprentices and less-experienced technicians.

• Strong judgment, self-control, and respect for customer and company confidentiality.

• Ability to accept and apply constructive feedback.

• Comfortable using tablets, mobile applications, and electronic scheduling systems.

• EPA Universal Certification required.

• Applicable Connecticut HVAC trade license preferred.

• Valid driver’s license with an acceptable driving record.

• Ability to perform physical work on rooftops, in mechanical rooms, and in indoor and outdoor conditions.

Success in this role means diagnosing commercial HVAC issues accurately, completing dependable repairs, and keeping customers informed throughout the service process. You’ll document your work thoroughly, maintain professional jobsites and equipment, support the development of apprentices, and represent Astacio with integrity on every call.