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ZEISS

Senior HVAC Technician

Ontario, CA

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hirly's read of this role

Role family
Skilled trades
Seniority
Senior
Country
US
Work mode
On-site / unstated
First seen by hirly
3 Oct 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

About Us:

How many companies can say they’ve been in business for over 179 years?!

Here at ZEISS, we certainly can! As the pioneers of science, ZEISS handles the everchanging environments in a fast-paced world, meeting it with cutting edge of technologies and continuous advancements. ZEISS believes that innovation and technology are the key to a sustainable future and solutions for global change. We have a diverse range of portfolios throughout the ZEISS family in segments like, Industrial Quality & Research, Medical Technology, Consumer Markets and Semiconductor Manufacturing Technology. We are a global company with over 42,000 employees and have over 4,000 in the US and Canada alone! Make a difference, come join the team!

What’s the role?

The Senior HVAC Technician is responsible for the operation, maintenance, troubleshooting, and repair of HVAC systems and related building infrastructure supporting Carl Zeiss Meditec’s manufacturing operations.

This role plays a critical part in maintaining reliable facility operations and ensuring the environmental conditions required to support medical device manufacturing. The Senior HVAC Technician will work with critical systems, including cleanroom and production-area HVAC systems, chilled water systems, and associated mechanical equipment.

Sound Interesting?

Here’s what you’ll do:

HVAC Systems Maintenance

Perform preventive maintenance, inspections, troubleshooting, and repairs on commercial and industrial HVAC systems.

Maintain and troubleshoot a variety of HVAC and mechanical equipment, including:

Air Handling Units (AHUs) and Rooftop Units (RTUs)

Variable Frequency Drives (VFDs)

Chillers, chilled water, and glycol cooling systems

Boilers and heating systems

Exhaust systems

Pumps, valves, and related mechanical equipment

Diagnose system failures, identify root causes, and implement effective corrective actions.

Monitor and maintain required temperature, humidity, airflow, and pressure conditions throughout the facility.

Cleanroom & Controlled Environment Support

Maintain HVAC systems supporting ISO-classified manufacturing and laboratory environments.

Help ensure cleanroom environmental requirements are consistently maintained, including temperature, humidity, airflow, and pressure relationships.

Troubleshoot environmental excursions and support the implementation of corrective actions.

Follow cleanroom gowning, contamination control, and other applicable procedures when entering controlled environments.

Preventive Maintenance & Reliability

Perform scheduled preventive maintenance using the Facilities CMMS, MPulse.

Accurately document maintenance activities, findings, repairs, and recommendations in the CMMS.

Identify equipment deficiencies and recommend improvements to enhance system reliability and performance.

Support facility and equipment uptime goals by proactively identifying and addressing potential issues.

Building Automation Systems (BAS)

Monitor and troubleshoot HVAC controls through the Building Automation System.

Identify alarms, abnormal operating conditions, and equipment trends.

Work with controls contractors and other technical resources when advanced troubleshooting or repairs are required.

Safety, Quality & Compliance

Perform all work in accordance with applicable safety and quality requirements, including:

OSHA requirements

Lockout/Tagout (LOTO) procedures

Electrical safety practices

Company Environmental, Health & Safety (EHS) policies

Quality system requirements

Maintain accurate maintenance records and documentation.

Support internal and external audits by providing required documentation and technical information.

Follow all applicable procedures and requirements associated with a medical device manufacturing environment.

Contractor & Project Support

Support HVAC installation projects, equipment upgrades, and facility improvement initiatives.

Assist with contractor coordination and verify that work is completed according to specifications and requirements.

Provide technical expertise and recommendations for HVAC-related projects and facility improvements.

Do you qualify?

Required Qualifications

High school diploma or equivalent and completion of an HVAC trade school or equivalent technical training.

EPA Section 608 Universal Refrigerant Certification.

Minimum 5 years of HVAC maintenance experience in commercial, industrial, or manufacturing environments.

Hands-on experience troubleshooting:

HVAC mechanical systems

Refrigeration systems

Chilled water systems

Air handling equipment

HVAC controls and sensors

Ability to read and interpret mechanical drawings, schematics, and equipment manuals.

Strong troubleshooting, analytical, and problem-solving skills.

Preferred Qualifications

Experience in one or more of the following environments is highly desirable:

Cleanrooms or other controlled environments

Medical device manufacturing

Pharmaceutical manufacturing

Semiconductor manufacturing

Other regulated manufacturing environments

Experience with Building Automation Systems (BAS)

Experience using Computerized Maintenance Management Systems (CMMS) such as MPulse or similar platforms

Knowledge of ISO cleanroom requirements and environmental monitoring

Skills & Abilities

Working knowledge of cGMP, FDA, ISO 13485, and other requirements associated with regulated manufacturing environments is highly desirable.

Ability to prioritize multiple tasks and respond effectively to emergency equipment failures while maintaining a high level of customer service.

Strong organizational and documentation skills, including experience maintaining accurate records in a CMMS.

Ability to work independently with minimal supervision and provide technical guidance and mentoring to junior maintenance technicians.

Strong verbal and written communication skills, with the ability to work effectively with Production, Engineering, Quality, contractors, and leadership.

Demonstrated commitment to safety, quality, continuous improvement, and operational excellence.

Valid California Driver’s License with an acceptable driving record.

Physical Requirements

This position requires the ability to:

Lift and carry up to 50 pounds.

Frequently climb and descend building and roof-access ladders.

Work from ladders, lifts, and elevated platforms for extended periods.

Work in mechanical rooms, manufacturing areas, and controlled environments, including cleanrooms.

Stand, walk, bend, kneel, and work in various positions for extended periods.

Respond to emergency maintenance situations as needed.

Work Environment

The Senior HVAC Technician works across a variety of facility and manufacturing environments and may be exposed to:

Fumes and airborne particles

Moving mechanical equipment and parts

Hazardous energy and vibration

Maintenance, production, and process chemicals

Janitorial chemicals

Loud noise levels

Extremely hot or cold temperatures

Appropriate safety procedures and personal protective equipment (PPE) must be used as required.

Work Schedule

This is a full-time position with core hours of Monday through Friday, 7:00 a.m. to 3:30 p.m.

Compensation

The hourly pay range for this position is $34.00 - $43.00.

Actual compensation will depend on factors such as location, experience, education, skills, and role scope

Eligible for performance bonus or sales commissions

We have amazing benefits to support you as an employee at ZEISS!

  • Medical
  • Vision
  • Dental
  • 401k Matching
  • Employee Assistance Programs
  • Vacation and sick pay
  • The list goes on!

The above is intended to describe the general content of and requirements for this job. It is not to be construed as an exhaustive statement of requirements, duties, or responsibilities. The Company reserves the right to interpret, amend, or o

Original posting on ZEISS's site ↗

Listed on hirly, a job board. hirly is not the employer: ZEISS is hiring for this role.

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