Master HVAC Mechanic; Air Conditioning & Heating Mechanic - Department of General Services

Howard County

Conveniently located in the heart of central Maryland between Baltimore and Washington, Howard County offers the charm of a historic past mixed with the excitement of a cosmopolitan community.

Howard County Government is a leader in innovation, best practices and sustainability. It is consistently ranked as one of the best places to live and work in the country. In 2025, Howard County Government received a record-breaking 83 Achievement Awards from the National Association of Counties (NACo) – the most awards in the state of Maryland, and the fifth highest in the nation, as compared to more than 3000 counties.

NACo Achievement Awards are the premier national honor to recognize innovative and transformative programs that provide new services for county residents, improve existing programs, upgrade working conditions, and enhance citizen participation and public policy making.

We are looking for outstanding individuals to join our team and contribute to excellence in Howard County operations.

• We are committed to workplace excellence in every area of County government.
• We have a highly talented, diverse, and inclusive workplace. Your input will not only be heard, but it will be encouraged!
• We offer competitive compensation and great benefits including medical, retirement, and wellness programs.
• As a member of the Howard County Government team, you
  09ll be helping drive our culture and directly impact what makes us an amazing place to work.

This is senior technical level operations service work, which may include lead worker responsibility. Work includes skilled trades work at the master mechanic level involving heating, ventilation and air conditioning installation, maintenance, and repairs.

This is skilled manual and technical work at the experienced level; directing and performing heating and air conditioning installations and repairs for County-owned facilities. Work includes supervising and participating in the installation, service, and maintenance of air conditioning and heating equipment; performing preventive maintenance work. Work is performed with general supervision from a technical or administrative superior. Assignments are stable in nature and are carried out in accordance with accepted trades standards and applicable regulations.

Work is reviewed periodically on a project basis. Work includes responsibility for maintenance and efficient operation of expensive heating and air conditioning equipment. Include the following. Other related duties may be assigned.

Works and cooperates with co-workers and supervisors at all levels. Learns and performs all essential job functions accurately.

Troubleshoots air conditioning, heating, electrical and pneumatic controls; disassembles, replaces, or adjusts defective parts; tests completed work; properly recharges air conditioning systems with refrigerants and tracks usage for EPA regulations; orders parts; performs preventive maintenance; makes emergency repairs to equipment; assures efficient, economical and safe practices and procedures for the operation of air conditioning and heating equipment.

Tests joints, systems, compressors, and other related equipment. Cleans and maintains boilers/chillers.

Is responsible for maintenance of all air conditioning and heating equipment and records.

Performs a variety of building maintenance tasks; assists electrician to troubleshoot faults; assists plumber in repair of pumps and motors.

Provides "in-house" preventive maintenance on equipment.

Directs the work of others; may be assigned apprentice for a specified time.

Performs overtime work and on call work.

This position is designated as an emergency/essential position and may be required to respond in a variety of emergency situations.

This job has no direct supervisor responsibilities. May direct or oversee the work of lower level semiskilled and unskilled employees.

Education:

High School Diploma or GED and five (5) years of related experience or equivalent combination of education and experience.

Thorough knowledge of the operation, maintenance, and repair of heating and air conditioning equipment. EPA Refrigerant Certification.

Knowledge of standard trade practices, methods, tools, instruments, and equipment.

Knowledge of all phases of shop mathematics relevant to the performance of heating and air conditioning work.

Ability to climb and work from scaffolds, ladders and catwalks.

Ability to read blueprints, schematics, wiring diagrams and other specifications.

Basic computer skills navigating through a series of menus.

Ability to plan, assign, and review the work of others.

Ability to establish and maintain effective working relationships with others.

Knowledge of the occupational hazard and safety precautions applicable to buildings, grounds, and…