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M.C. Dean

Designs and deploys secure mission-critical infrastructure

HVAC Technician 3

HVAC & Building SystemsConfirmed live in the last 24 hours
Full-timeTysons, VA, USA$40 - $47.50 /hr

About the Job

Requirements

  • High school diploma or GED and at least 6 years of commercial HVAC experience.
  • Commercial HVAC experience as a truck-based service technician.
  • Experience with complex HVAC systems, including chillers, boilers, package units, air handling units, and variable air volume systems with direct digital, pneumatic, and automated controls.
  • Journeyman License or ability to obtain one within 1 year under program standards.
  • Current CFC/EPA Universal Certification.
  • Holistic understanding of mechanical equipment and HVAC design in commercial and industrial environments.
  • HVAC OEM factory training or experience with Trane, Liebert, Stulz, and other major brands.
  • U.S. Citizenship and ability to obtain and maintain a Top Secret clearance; applicants will undergo a government background investigation.
  • Valid driver’s license and ability to comply with M.C. Dean vehicle policies.
  • Strong understanding of HVAC tools, machines, and their proper maintenance.
  • Proficiency using hand tools and test equipment for diagnostic and repair work.
  • Ability to complete timely maintenance reports, service tickets, and daily safety briefings.
  • Written and verbal communication skills in English.
  • Willingness to work nights and weekends and participate in a 24/7 on-call rotation.
  • Ability to travel occasionally outside normal working areas, possibly including limited overnight travel.
  • Basic computer skills, including Microsoft Office applications.
  • Ability to work independently, resourcefully, and safely.
  • Ability to lift, carry, and move objects up to 50 pounds regularly while following proper lifting techniques and safety protocols.
  • Ability to relocate a 12-foot stepladder without assistance.
  • Ability to work at heights up to 60 feet and climb and maintain balance on scaffolds, aerial lifts, catwalks, and ladders.
  • Ability to walk, climb, lift, squat, crawl, kneel, push, pull, and reach overhead on a routine and repetitive basis.
  • Good vision, including color vision, and ability to hear and communicate in English.
  • Ability to use a standard ladder within its weight limit while carrying tools.
  • Ability to recognize when something is wrong or likely to go wrong.
  • Ability to apply general rules to specific problems and produce sensible answers.
  • Ability to combine information to form general rules or conclusions, including identifying relationships among seemingly unrelated events.
  • Ability to see details at close range.
  • Ability to listen to and understand spoken information and ideas.

Responsibilities

  • Perform preventive and corrective maintenance on air-cooled chillers, air handling units, boilers, cooling towers, data center cooling systems, exhaust and filtration systems, heat exchangers, heat pumps, humidification systems, piping, pumps, rooftop units, variable air volume systems, variable frequency drives, and walk-in coolers and freezers.
  • Install AC units and air-cooled chillers; overhaul and replace boilers; install commercial water heaters; and rebuild and install water-cooled and direct-expansion pumps.

Desired Qualifications

  • Completion of an HVAC technical training program or recognized apprenticeship.
  • Advanced component-level troubleshooting of boilers, chillers, air handling units, variable air volume systems, heat pumps, and computer room air conditioning units.
  • Ability to read and interpret mechanical drawings, schematics, and system plans.
  • Current Master HVAC License or equivalent technical degree.
  • Experience with Liebert HVAC systems.
  • Ability to build strong customer relationships and provide proactive recommendations to clients.

About the Company

M.C. Dean

Designs and deploys secure mission-critical infrastructure

M.C. Dean designs, builds, operates, and maintains integrated cyber-physical systems for mission-critical facilities, secure environments, and large enterprises. Its work spans electrical power, security, telecommunications, life safety, automation and controls, audio-visual, and IT systems, all coordinated through management platforms that support long-term operation and sustainability. The company works end-to-end: it engineers solutions, installs them, and then runs and maintains them to ensure continuous, secure, and resilient performance. What sets it apart is its ability to provide comprehensive, turnkey technology and infrastructure services for critical environments—combining physical systems with digital management to create secure, automated facilities. The goal is to deliver automated, secure, and resilient power and technology systems and the platforms needed to manage them over the long term.

Company size
1,001-5,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Tysons, VA
Founded
1949

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