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CoolSys

Refrigeration and HVAC design, installation, maintenance

Refrigeration Start-up Technician - Commercial & Industrial

Full-TimeDeadline 4/8/27
$60/hr
Senior
Knoxville, TN, USA
In Person
Building TradesHVAC & Building Systems

About the job

Requirements
  • High school diploma or GED.
  • Coursework at an accredited vocational-technical or trade school.
  • At least 3 years of supermarket energy management system experience.
  • At least 5 years of commercial refrigeration experience, especially with parallel rack systems; carbon dioxide experience is a plus.
  • EPA I and II Certification is required.
  • A valid driver's license is required at all times, along with a good driving record.
  • Proficient knowledge of Microsoft applications, including Word and Excel.
  • Expert knowledge of refrigeration, ice machines, and electrical systems.
  • Expert knowledge of single systems, parallel rack systems, display cases, and walk-ins.
  • Ability to troubleshoot commercial and supermarket refrigeration equipment efficiently.
  • Expert knowledge of energy management systems in supermarket applications, including wiring and programming CPC, Novar, and Danfoss systems.
  • Strong mechanical aptitude.
  • Knowledge of and ability to read blueprints for refrigeration, electrical, and plumbing systems.
  • Ability to multitask effectively.
  • Ability to organize and prioritize personal work and others' work schedules on a short-term basis.
  • Ability to travel, work overnight, and work overtime as needed.
Responsibilities
  • Start up supermarket refrigeration, heating, and ventilation equipment to meet customer needs efficiently, accurately, and on time, and assist with Energy Optimization projects.
  • Perform evacuations of parallel racks after verifying pressure tests.
  • Perform energy management system wiring and programming for all manufacturers' systems.
  • Perform full start-up of new parallel refrigeration systems and individual systems.
  • Lead small projects, such as single-case and condenser changeouts.
  • Assist with Energy Optimization projects, including supermarket retro-commissioning for system performance or utility programs, energy management system upgrades, leak-detection upgrades, and gas-conversion projects.
  • Work with local branch Service and Construction Managers between projects to assist with problematic stores, train junior technicians and foremen, or provide other support as needed.
  • Serve as the subject matter expert for processes, procedures, and projects.
  • Perform other duties as assigned.
Desired Qualifications
  • Energy management system certification is preferred.
  • Carbon dioxide refrigeration experience is a plus.

About the company

CoolSys provides refrigeration and HVAC services to retail, commercial, and industrial clients. It designs, installs, and remodels systems, converts refrigerants, performs preventative maintenance, repairs, and optimizes energy use and overall system performance. Their products are not a physical device but a service offering: engineers create system designs, technicians install and service equipment, and ongoing monitoring and maintenance help keep temperatures stable and energy use efficient. What sets CoolSys apart is its broad, industry-focused experience across grocery, food service, telecommunication, manufacturing, education, entertainment, and pharma sectors, plus a persistent emphasis on reliability, integrity, and meeting client commitments while addressing environmental sustainability. The company aims to improve clients’ operations, experiences, and work environments through high-quality, dependable service and energy-efficient, properly maintained systems.

Company Size

1,001-5,000

Company Stage

Debt Financing

Total Funding

$150M

Headquarters

Brea, California

Founded

2017

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Simplify's Take

What believers are saying

  • Energy Squared joined on August 17, 2026, strengthening MEPR design capabilities.
  • Ares-backed credit support in September 2025 extended liquidity and refinanced prior lenders.
  • CoolSys keeps buying specialists, including 1GNITE, Lima, and Georgia Air Solutions.

What critics are saying

  • June 2026 amendments added PIK debt through 2027, signaling financing strain.
  • Randolph v. CoolSys and the 2026 wage-hour settlement expose recurring labor liabilities.
  • Ares ownership and relentless add-ons create integration drag; one failed merger hurts service quality.

What makes CoolSys unique

  • CoolSys unified Source Refrigeration under one brand in July 2026.
  • Its 2026 portfolio spans refrigeration, HVAC, energy, engineering, and equipment removal.
  • Recurring maintenance contracts drove 54% of revenue and 96% customer retention in 2025.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Paid Vacation
  • Paid Holidays
  • 401(k) Company Match
  • Training Programs
  • Tuition Reimbursement
  • Pet Insurance
  • Employee Discounts
  • Performance Bonus

Growth & Insights and Company News

Headcount

6 month growth

25%

1 year growth

26%

2 year growth

26%
FreightWaves
Sep 4th, 2025
CoolSys secures $39.5M: A game-changer for cooling industry

CoolSys secures $39.5M: A game-changer for cooling industry.

Abl Advisor
Sep 3rd, 2025
Wingspire Capital Provides $39.5MM Senior Credit Facility to CoolSys - News | ABL Advisor

Wingspire Capital has provided a $39.5 million senior secured credit commitment to CoolSys, a leader in mission-critical HVAC, refrigeration, and energy and carbon reduction solutions for thousands of businesses across the United States.The commitment is part of a broader $150 million credit facility for CoolSys with a syndicate led by Mizuho  that...

Business Wire
Oct 1st, 2024
CoolSys Acquires Mechanical Engineering & Construction Corporation

CoolSys™, the market-leading provider of sustainable refrigeration, HVAC, energy and engineering solutions, has acquired Mechanical Engineering &

The Daily Record
Sep 30th, 2024
CoolSys acquires Catonsville mechanical engineering firm

In acquiring MEC2, CoolSys will strengthen its commercial and industrial capabilities while deepening its market presence in the mid-Atlantic region.

Business Wire
Jun 18th, 2024
CoolSys Acquires Universal Refrigeration

CoolSys acquires Universal Refrigeration.