Senior Commercial HVAC Field Technician & Troubleshooter

We are seeking several experienced Commercial HVAC Service Technicians to join a growing service team supporting commercial and industrial clients throughout Connecticut.

This role focuses on diagnostics, troubleshooting, repair, preventative maintenance, and startup of commercial HVAC systems including RTUs, chillers, boilers, VAV systems, heat pumps, split systems, and related controls.

The ideal candidate is a hands-on service technician with strong commercial HVAC experience, excellent troubleshooting ability, and a customer-focused mindset. This is a field-based role requiring independent problem-solving, professionalism, and the ability to manage service calls efficiently.

Key Responsibilities

• Diagnose, troubleshoot, repair, and maintain commercial HVAC systems and components

• Perform preventative maintenance, equipment startup, and system inspections

• Service rooftop units (RTUs), boilers, chillers, VAV systems, split systems, and heat pumps

• Troubleshoot HVAC controls, electrical, refrigeration, and mechanical issues

• Perform brazing, soldering, and refrigeration piping work as needed

• Communicate effectively with customers regarding repairs, recommendations, and system conditions

• Accurately estimate repair time and material requirements

• Complete service reports and required documentation in a timely manner

• Participate in on-call rotation and respond to emergency service calls when required

• Follow all safety procedures, OSHA standards, and local code requirements

Required Experience

• Valid Connecticut HVAC License (S1, S2, D1, or D2)

• 3–5+ years of commercial HVAC service experience

• Strong troubleshooting and diagnostic experience on commercial systems

• Experience with boilers, chillers, RTUs, controls, and related HVAC equipment

• Knowledge of commercial refrigeration systems is a plus

• Strong communication and customer service skills

• Ability to work independently and manage multiple service calls

• Valid driver’s license and clean driving record preferred

Preferred Qualifications

• OSHA 10 certification

• Experience with controls, frequency drives, and central plant operations

• Experience in mission-critical or commercial facility environments

• Familiarity with service management software and mobile field technology

• Stable work history in commercial HVAC service

Equal Opportunity Employer / Disabled / Protected Veterans

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For temporary assignments lasting 13 weeks or longer, Apple One is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

Apple One participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
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- We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants:
Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.