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  1. Home
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  3. engineering
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  5. HVAC/R Service Tech 3 - Light Commercial
CoolSys - Refrigeration and HVAC Systems logo

HVAC/R Service Tech 3 - Light Commercial

Not Disclosed•Full-TimeOn-site

location_on503, Madison Street, Saint Charles, Saint Charles County, Missouri, 63301, United States

Apply Now

Why CoolSys? At CoolSys, we offer more than just a job—we provide stability, growth, and industry-leading benefits for our employees. Newsweek named CoolSys one of America's Greatest Workplaces! As a large company serving diverse customers, we invest in our team with ongoing education, comprehensive benefits, and year-round, diverse work across various industries and systems. Join us and advance your career while working with top-tier clients in the HVAC and refrigeration industry!

About the Role Today, there are 26 different companies that make up the CoolSys family of brands. Our valued employees are at the heart of our continued growth and success. We invite you to be part of that growth! In this role, you will perform repairs and maintenance on a wide variety of HVAC and Refrigeration equipment, including air conditioning, heating units, heat pumps, commercial furnaces, boilers, and refrigeration units like walk-in coolers and ice machines. You will stay engaged with consistent, interesting projects throughout the year, working across various industries to keep learning and growing.

Equal Opportunity Coolsys is an EEO/AA Employer. All qualified individuals—including all ages, colors, disability, ethnicity, family or marital status, gender identity or expression, language, national origin, physical and mental ability, political affiliation, race, religion, sexual orientation, socio-economic status, veteran status, and other characteristics—are encouraged to apply. Coolsys will consider qualified applicants with criminal histories in a manner consistent with federal law, state law, or local ordinance. Pre-employment background screening (criminal and MVR for driving positions) and drug testing are required for all positions.

Work location

Work model: On-site

location_on

503, Madison Street, Saint Charles, Saint Charles County, Missouri, 63301, United States

Saint Charles, Missouri

Key Responsibilities

  • check_circlePerform repairs and maintenance on HVAC and refrigeration equipment
  • check_circleService air conditioning, heating units, heat pumps, and commercial furnaces
  • check_circleMaintain electric motors, hermetic compressors, boilers, and burners
  • check_circleService RTUs, remote condensing units, ice machines, and walk-in coolers
  • check_circleMaintain upright and walk-in refrigerators and freezers
  • check_circleInstall and service intake/exhaust fans, economizers, and humidifiers

Requirements

  • verified3+ years of commercial experience as an HVAC and Refrigeration Technician
  • verifiedActive EPA Certification
  • verifiedValid driver's license

Benefits & Perks

check_circleMedical, Dental, Vision, and Prescription coveragecheck_circlePaid vacation and holidayscheck_circle401(K) matchcheck_circleQuarterly bonus plancheck_circleTuition reimbursementcheck_circleEmployee discounts on vehicles, hotels, and theme parkscheck_circlePet insurancecheck_circlePaid online training and access to state-of-the-art facilities
CoolSys - Refrigeration and HVAC Systems cover image
CoolSys - Refrigeration and HVAC Systems logo
Company

CoolSys - Refrigeration and HVAC Systems

Industry

Facilities Services

Headquarters

Brea, CA

Open Roles

8

CoolSys provides specialized facilities services focused on refrigeration, HVAC systems, energy management, and engineering solutions. The company delivers customized services to enhance equipment efficiency, reduce operational costs, and minimize environmental impact for businesses nationwide. Headquartered in Brea, California, CoolSys operates across multiple industries, including grocery, retail, industrial, healthcare, education, and government sectors.\n\nWith a team of over 3,700 professionals, the company offers equipment installation, maintenance, repair, monitoring, and optimization. Additional capabilities include low-global warming potential (GWP) transitions, MEPR/FP engineering, design-build projects, energy resilience strategies, and multi-site implementation services. CoolSys also facilitates used asset recycling and integrated consumption optimization solutions.\n\nEstablished in Southern California since 1997, CoolSys supports more than 45,000 customer locations across the United States. Recognized by Newsweek as one of America’s Greatest Workplaces, the company has expanded through strategic acquisitions and organic growth. CoolSys partners with organizations committed to operational safety, customer-focused service delivery, and financial stability.
View company profilearrow_forwardlanguageWebsitelinkLinkedIn
Quick Overview

Experience

3+ yrs (Mid Level)

Job Type

Full-Time

Skills Required

HvacRefrigerationHvac/rHvac-RAcChiller

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Frequently asked questions about HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems

What does a HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems do?expand_more
A HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems is responsible for the following: Perform repairs and maintenance on HVAC and refrigeration equipment; Service air conditioning, heating units, heat pumps, and commercial furnaces; Maintain electric motors, hermetic compressors, boilers, and burners; and Service RTUs, remote condensing units, ice machines, and walk-in coolers.
What are the requirements for this HVAC/R Service Tech 3 - Light Commercial role?expand_more
CoolSys - Refrigeration and HVAC Systems is looking for candidates who meet the following requirements: 3+ years of commercial experience as an HVAC and Refrigeration Technician; Active EPA Certification; and Valid driver's license.
Where is the HVAC/R Service Tech 3 - Light Commercial role at CoolSys - Refrigeration and HVAC Systems located?expand_more
HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems is based in 503, Madison Street, Saint Charles, Saint Charles County, Missouri, 63301, United States. This is a on-site role.
Is this HVAC/R Service Tech 3 - Light Commercial job remote, hybrid, or on-site?expand_more
CoolSys - Refrigeration and HVAC Systems has listed this HVAC/R Service Tech 3 - Light Commercial role as on-site.
How much experience is required for this HVAC/R Service Tech 3 - Light Commercial role?expand_more
HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems typically requires 3+ years of relevant experience at the mid level level.
What skills do you need for the HVAC/R Service Tech 3 - Light Commercial role at CoolSys - Refrigeration and HVAC Systems?expand_more
Key skills for HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems include Hvac; Refrigeration; Hvac/r; Hvac-R; Ac; Chiller; Supermarket; and Rack Systems.
What category does the HVAC/R Service Tech 3 - Light Commercial role belong to?expand_more
HVAC/R Service Tech 3 - Light Commercial at CoolSys - Refrigeration and HVAC Systems is part of the engineering job category on Recrutus.

About CoolSys - Refrigeration and HVAC Systems

CoolSys provides specialized facilities services focused on refrigeration, HVAC systems, energy management, and engineering solutions. The company delivers customized services to enhance equipment efficiency, reduce operational costs, and minimize environmental impact for businesses nationwide. Headquartered in Brea, California, CoolSys operates across multiple industries, including grocery, retail, industrial, healthcare, education, and government sectors.\n\nWith a team of over 3,700 professionals, the company offers equipment installation, maintenance, repair, monitoring, and optimization. Additional capabilities include low-global warming potential (GWP) transitions, MEPR/FP engineering, design-build projects, energy resilience strategies, and multi-site implementation services. CoolSys also facilitates used asset recycling and integrated consumption optimization solutions.\n\nEstablished in Southern California since 1997, CoolSys supports more than 45,000 customer locations across the United States. Recognized by Newsweek as one of America’s Greatest Workplaces, the company has expanded through strategic acquisitions and organic growth. CoolSys partners with organizations committed to operational safety, customer-focused service delivery, and financial stability.

Browse more roles: All CoolSys - Refrigeration and HVAC Systems jobs, engineering jobs on Recrutus.

Recrutus

Curating the world's most innovative career opportunities. We bridge the gap between visionary talent and industry-leading companies.

Search roles by city, category, skill, or job type — explore verified employers, salary benchmarks, and remote-friendly teams across India and beyond.

publiclanguageshare
Job seekers
Browse jobsCompanies hiringRemote jobsJobs by locationJobs by cityJobs by categoryCareer guidesCareer blogSalary insights
Job types
Contractor jobsFull-Time jobsIntern jobsOther jobsPart-Time jobsPer-Diem jobsTemporary jobs
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Jobs in TexasJobs in New YorkJobs in CaliforniaJobs in FloridaJobs in North CarolinaJobs in TennesseeAll states →
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Popular skills
CDL A jobsRegistered Nurse jobsBLS jobsEnglish jobs
Featured employers
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About usFAQContactPrivacy policyUS privacy notice

Recrutus helps candidates discover roles that match their skills and helps teams reach qualified applicants faster. Browse by metro, discipline, or work style — from internships to senior leadership.

© 2026 Recrutus. All rights reserved.
Terms of serviceCookie policyAcceptable useDMCA policyEmployer termsCandidate terms
Supermarket
Rack Systems
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