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HVAC Technician IV

BAE Systems
BAE Systems Salary
Merrimack, NH Full Time
POSTED ON 3/25/2026
AVAILABLE BEFORE 4/25/2026

Job Description

The selected candidate must have strong communication skills, be self-motivated and capable of working in a collaborative team environment. You will be joining a highly qualified and skilled team of various trades that reports directly to one of 2 Facilities Plant Engineering Supervisors at the Merrimack NH Facility. The Main campus consists of 185 acres, with five main buildings, and multiple specialized R & D facilities, totaling approximately 600,000 SF. Responsibilities also include supporting activities at the MLF Quarry in Milford NH, MNH21 at 21 Continental Blvd, Merrimack, NH and MNH25 at 25 Manchester st., Merrimack NH. The MER facility, at times houses approximately 1100 employees throughout the listed facilities above.

As a member of the HVAC team you will be supporting all of the listed Facilities, working with a broad range of HVAC equipment from Multi-zoned Ductless Air Conditioners to Cascade Refrigeration Systems, to Modular Chiller & Boiler Systems, to Evaporative Cooling Towers, ranging up to 200 tons. With a robust Building Automation System supporting most HVAC equipment, it will also be imperative that the selected individual has the basic understanding of the functionality of building automation controls and their role within the supporting HVAC systems.

At BAE Systems our employees work on the world’s most advanced electronics – from saving emissions in the City of Lights to powering the Mars Rover to protecting the F-35 fighter jet. At Electronic Systems, you’ll be among the brightest minds, working on the aerospace and defense industry’s most difficult problems. Drawing strength from our differences, we’re innovating for the future and you can, too. Our flexible work environment provides you a chance to change the world without giving up your personal life. We put our customers first – exemplified by our missions: “We Protect Those Who Protect Us®” and “We Innovate for Those Who Move the World TM.” We are excited for you to come join our Plant Engineering Team!

  • Maintains, adjusts, repairs, installs, troubleshoot, tests and operates all types of air conditioners, chillers, hot water boilers, refrigeration equipment, environmental chambers and all controls and component parts for each of the above systems.
  • Works from prints, sketches, diagrams, handbooks and manufacturer's instructions to analyze, diagnose, adjust and restore malfunctioning heating, air conditioning and ventilating systems and chambers to ensure efficient operating conditions.
  • Must coordinate work with outside vendors, to support troubleshooting, repairs and installations.
  • May perform analysis on boiler water, chilled water, condenser water, closed loops and glycol systems etc. and adjust chemical feed rates to assure compliance with established parameters. Which includes daily written logs on analysis results. Works with outside water treatment contractor, to conserve energy, maximize efficient operations and extend equipment life.
  • Must be capable and highly skilled with the installation of HVAC and refrigeration equipment. The qualified candidate shall understand how to adjust HVAC equipment after installation, modification or a complete overhaul.
  • Basic understanding of functionality of the Building Automation System and its relationship to the HVAC equipment.
  • Must be able to operate within a computerized maintenance work order system. Qualified candidate must be able to log work performed, provide a brief explanation of the problem and summarize what was replaced and or repaired.
  • May be required to clean and service equipment that may contain hazardous substances and to participate in the sorting and accumulation of hazardous waste materials in accordance with the Federal, State and Local regulators.
  • Be willing to participate in the on-call coverage for the facility.




Location of this position is 130 Daniel Webster Highway, Merrimack NH and is considered Full-time, onsite.



Required Education, Experience, & Skills
  • Requires a High School diploma or GED
  • Possess a valid NH or resident state Driver's License
  • An EPA Certification (Class III) for the proper use of refrigerants and minimum of (3) years of commercial/industrial experience in the HVAC trade
  • Valid New Hampshire Gas Fitters Service License


Preferred Education, Experience, & Skills
  • Completion of at least 60% of a recognized Certificate program in HVAC (complete program will involve 984 hours of classroom training).


Pay Information
Full-Time Salary Range: $66017 - $105628

Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.

Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20 hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.


About BAE Systems Electronic Systems
BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it’s what we do at BAE Systems. Working here means using your passion and ingenuity where it counts – defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team—making a big impact on a global scale. At BAE Systems, you’ll find a rewarding career that truly makes a difference. Electronic Systems (ES) is the global innovator behind BAE Systems’ game-changing defense and commercial electronics. Exploiting every electron, we push the limits of what is possible, giving our customers the edge and our employees opportunities to change the world. Our products and capabilities can be found everywhere – from the depths of the ocean to the far reaches of space. At our core are more than 14,000 highly talented Electronic Systems employees with the brightest minds in the industry, we make an impact – for our customers and the communities we serve.

This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.

Salary : $66,017 - $105,628

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