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CoolSys

Refrigeration and HVAC design, installation, maintenance

Senior Refrigeration Service Technician - Commercial & Industrial

HVAC & Building SystemsConfirmed live in the last 24 hours
Full-timeKnoxville, TN, USAIn-person

About the Job

Requirements

  • High school diploma or GED, equivalent work experience, and trade or technical school classes.
  • Must have passed Tech Skills level 6 with a score of 80% or better.
  • Valid EPA certificate.
  • At least 6 years of experience in commercial HVAC, refrigeration, and electrical work.
  • Basic knowledge of refrigeration, HVAC, ice machines, gas furnaces, and electrical systems.
  • Knowledge of I/O networks with board power.
  • Ability to troubleshoot a lost board, no-response alarm, and fan-failure alarm.
  • Knowledge of suction pressure transducers for Comtrol, E2, RMCC, and Danfoss systems.
  • Knowledge of all boards and input devices in an EMS and their functions.
  • Knowledge of a Hansen rod.
  • Knowledge of the operation of a condenser bypass panel and VSD.
  • Knowledge and ability to perform proper inverter maintenance.
  • Knowledge of evaporative condensers and indoor humidity sensors.
  • Ability to verify that a store is properly pressurized.
  • Ability to verify heat staging, operation, anti-sweat operations, and exterior light operation.
  • Knowledge of floating suction operation for E2 and Danfoss systems.
  • Ability to demonstrate proper personal protective equipment and safety equipment.
  • Knowledge of level 2–5 experience/information.
  • Ability to lift up to 60 pounds without assistance and sit and/or stand for several hours at a time.
  • Valid driver's license and good driving record.
  • Ability to understand and follow company policies and procedures and applicable state and federal laws.
  • Ability to use typical business tools, including email, Word, and Excel.

Responsibilities

  • Report to work on time as scheduled by the supervisor.
  • Repair and overhaul equipment such as compressors, water pumps, air handlers, electrical and mechanical control devices, and similar machinery.
  • Test malfunctioning systems and components using electrical and/or mechanical skills.
  • Maintain legible corporate and personal records of work history.
  • Perform general repair work on refrigeration, heating, and ventilation equipment, including air conditioning units, evaporative condensers, ice machine equipment, water pumps, gas furnaces, compressors, and electric motors.
  • Perform preventative maintenance, diagnose equipment malfunctions, and assess the operating efficiency of mechanical equipment.
  • Perform work on minor construction and remodeling projects, including startups of new installations.
  • Provide guidance to junior technicians and support safe, efficient, and reliable operation of refrigeration equipment for commercial or industrial clients.
  • Perform other duties as assigned.

Desired Qualifications

  • Experience working on refrigeration equipment in convenience stores or supermarkets is a strong plus.
  • Familiarity with single systems and rack systems, along with previous work on display cases and walk-in boxes, is helpful.

About the Company

CoolSys

Refrigeration and HVAC design, installation, maintenance

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, CA
Founded
2017

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