What it pays
Government survey numbers — not estimates, not ads.
Half of all Cooling and Freezing Equipment Operators and Tenders in the U.S. earn more than $41,330 a year — the middle 80% land between $33,430 and $62,340. About 6,900 people in the U.S. do this work. Figures are for the U.S. occupation group “Cooling and Freezing Equipment Operators and Tenders”. (U.S. Bureau of Labor Statistics survey, published 2025.) In India, Plant and machine operators and assemblers earn about ₹17,329 a month on average — around ₹2.1 lakh a year (government PLFS survey via ILOSTAT, occupation-family figure).
$41,330typical pay / year
6,900people in this work
$62,340+top 10% earn
₹2.1 lakha year in India (family avg)
Think you get this job?Six quick questions on how it really works — with a hint and the reason behind every answer.
Test yourself →The work, task by task
These are the real jobs-to-be-done, not a wish list. Each task shows where we found it, and the prompt underneath is written for that exact task.
Fixing5
Maintain and monitor cooling systems
+Check the chillers and freezer rooms on the morning shift, verify pressure, oil and temperature readings…
Maintain and monitor cooling systems
+Check the chillers and freezer rooms on the morning shift, verify pressure, oil and temperature readings against the maintenance schedule, replace any worn seals, note deviations in the log, and flag anything outside tolerance to maintenance manager Sarah by midday.
The tools that do the workMicrosoft Exceljob descriptionsO*NETWikipedia
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Operate cooling and freezing equipment
+Start the evening run on the blast freezers, set target temperatures, confirm door seals and compressor belts…
Operate cooling and freezing equipment
+Start the evening run on the blast freezers, set target temperatures, confirm door seals and compressor belts are secure, record start-up readings, and notify production supervisor Mark immediately if targets fail to stabilise within thirty minutes.
The tools that do the workMicrosoft Wordjob descriptionsO*NETWikipedia
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Operate pumping systems or equipment
+Commission the secondary pump train for the cold loop, confirm flow and pressure at suction and discharge…
Operate pumping systems or equipment
+Commission the secondary pump train for the cold loop, confirm flow and pressure at suction and discharge gauges, open specified isolation valves in sequence, log pump hours and any vibration readings, and escalate cavitation or leak signs to lead engineer Ian.
The tools that do the workMicrosoft Exceljob descriptionsWikipedia
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Load materials into production equipment
+Load the glycol dosing tank and transfer feed lines with the measured quantity, follow the weighing sheet so…
Load materials into production equipment
+Load the glycol dosing tank and transfer feed lines with the measured quantity, follow the weighing sheet so batch volumes match the recipe, secure lids and purge air, then sign the loading log and tell line lead Emma the batch is ready.
The tools that do the workMicrosoft Wordjob descriptionsO*NET
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Correct machinery malfunctions
+Diagnose the noisy condenser unit, isolate power, check fan motors, belts and relay contacts, replace the…
Correct machinery malfunctions
+Diagnose the noisy condenser unit, isolate power, check fan motors, belts and relay contacts, replace the faulty bearing if worn, run the unit under supervision and record fault found and corrective steps in the repair record for Richard.
The tools that do the workMicrosoft Wordjob descriptionsO*NET
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Keeping the record1
Record operational or production data
+Complete the daily operations sheet with temperatures, pressures, pump runtimes and material weights, attach…
Record operational or production data
+Complete the daily operations sheet with temperatures, pressures, pump runtimes and material weights, attach any fault reports, save the sheet to the shift folder, and email the compiled report to operations manager Lucy before the handover.
The tools that do the workGoogle GmailMicrosoft Exceljob descriptionsO*NET
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The daily work15
Assemble equipment, and attach pipes, fittings, or valves, using hand tools.
+Assemble the new condenser skid in Bay 3, connect the copper lines, brazed fittings and isolation valve,…
Assemble equipment, and attach pipes, fittings, or valves, using hand tools.
+Assemble the new condenser skid in Bay 3, connect the copper lines, brazed fittings and isolation valve, pressure-test to 300 kPa and tag the assembly ready for handover to maintenance by 17:00 today.
The tools that do the workMicrosoft WordO*NET
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Inspect and flush lines with solutions or steam, and spray equipment with sterilizing solutions.
+Inspect the low-temperature line run in Cold Room B, flush with alkaline solution then steam-flush until…
Inspect and flush lines with solutions or steam, and spray equipment with sterilizing solutions.
+Inspect the low-temperature line run in Cold Room B, flush with alkaline solution then steam-flush until clear, spray all exposed surfaces with the approved sterilant and log the completion before shift end.
The tools that do the workMicrosoft ExcelO*NET
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Sample and test product characteristics such as specific gravity, acidity, and sugar content, using hydrometers, pH meters, or refractometers.
+Take samples from product line 2, measure specific gravity, pH and Brix with the hydrometer, pH meter and…
Sample and test product characteristics such as specific gravity, acidity, and sugar content, using hydrometers, pH meters, or refractometers.
+Take samples from product line 2, measure specific gravity, pH and Brix with the hydrometer, pH meter and refractometer, record readings on the batch sheet and report any out-of-spec result to production supervisor immediately.
The tools that do the workMicrosoft ExcelO*NET
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Stir material with spoons or paddles to mix ingredients or allow even cooling and prevent coagulation.
+Stir the cooling vat C4 with the sanitary paddle for ten minutes at slow speed to ensure even cooling and…
Stir material with spoons or paddles to mix ingredients or allow even cooling and prevent coagulation.
+Stir the cooling vat C4 with the sanitary paddle for ten minutes at slow speed to ensure even cooling and prevent coagulation, then inspect and note texture before returning the vat to production.
The tools that do the workMicrosoft WordO*NET
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Activate mechanical rakes to regulate flow of ice from storage bins to vats.
+Activate the rake motor on Ice Bin 1 to regulate ice flow into Vat 2, monitor feed rate for five minutes and…
Activate mechanical rakes to regulate flow of ice from storage bins to vats.
+Activate the rake motor on Ice Bin 1 to regulate ice flow into Vat 2, monitor feed rate for five minutes and adjust rake speed if ice bridges form, then log actions in the maintenance diary.
The tools that do the workGoogle GmailO*NET
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Clear equipment jams
+Clear the jam in the scraper assembly on Conveyor 4, remove the trapped block, inspect for damaged blades or…
Clear equipment jams
+Clear the jam in the scraper assembly on Conveyor 4, remove the trapped block, inspect for damaged blades or bearings, replace any faulty parts and complete the fault report before returning conveyor to service.
The tools that do the workMicrosoft Wordjob descriptions
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Use vortex tubes for industrial spot cooling
+Fit the vortex tube assemblies into the stainless steel outlet plenum over Line B, set cold-tip temperature…
Use vortex tubes for industrial spot cooling
+Fit the vortex tube assemblies into the stainless steel outlet plenum over Line B, set cold-tip temperature to minus 10°C under 6 bar supply, flow-adjust the control needle until the product sensor reads 5°C, then log results and safety checks.
The tools that do the workMicrosoft ExcelWikipedia
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Implement radiative cooling in heat shields
+Install the low-emissivity radiative panels inside the aluminium heat shield on Truck 3, clamp panels flat,…
Implement radiative cooling in heat shields
+Install the low-emissivity radiative panels inside the aluminium heat shield on Truck 3, clamp panels flat, verify 0.8 emissivity with the handheld meter, secure thermal gap insulation, then photograph and document installation and ventilation clearance.
The tools that do the workMicrosoft WordWikipedia
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Support computer cooling systems
+Replace the server-room evaporator fan and re-route the chilled-air duct to the rear rack, confirm 12°C inlet…
Support computer cooling systems
+Replace the server-room evaporator fan and re-route the chilled-air duct to the rear rack, confirm 12°C inlet to the CPUs under 80% load test, bleed the line, and file the maintenance log with any deviations and parts used.
The tools that do the workMicrosoft ExcelWikipedia
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Cut candies manually or mechanically
+Set the candy shear for 10 mm slices on Production Line A, feed a 5 kg batch, check slice uniformity and…
Cut candies manually or mechanically
+Set the candy shear for 10 mm slices on Production Line A, feed a 5 kg batch, check slice uniformity and weight at the weighing station, adjust blade gap until mean weight is within tolerance, then record batch yield and sanitation steps.
The tools that do the workMicrosoft WordESCO
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Measure ingredients or substances
+Record the weight of incoming refrigerant and bracketed additives for the day, write each measurement in the…
Measure ingredients or substances
+Record the weight of incoming refrigerant and bracketed additives for the day, write each measurement in the shift log with batch number 47A, check the weighing machine calibration before the first fill, and sign the entry.
The tools that do the workMicrosoft Exceljob descriptions
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Lower temperature of items or environments
+Reduce the cold room setpoint to 2°C for the incoming pallet of dairy, log the change, monitor temperature…
Lower temperature of items or environments
+Reduce the cold room setpoint to 2°C for the incoming pallet of dairy, log the change, monitor temperature every 15 minutes for two hours, and if temp rise exceeds 1°C call the production supervisor.
The tools that do the workMicrosoft OfficeWikipedia
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Utilize thermoelectric cooling devices
+Install and bench-test the small thermoelectric module on the test rig, record input voltage, cooling plate…
Utilize thermoelectric cooling devices
+Install and bench-test the small thermoelectric module on the test rig, record input voltage, cooling plate temperature and run-time in the test sheet, and flag units that fail to reach minus 5°C within ten minutes.
The tools that do the workMicrosoft ExcelWikipedia
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Transfer thermal energy via radiation, conduction, or convection
+Inspect the coil and fan array, note obvious airflow blockages, adjust dampers to balance return air so each…
Transfer thermal energy via radiation, conduction, or convection
+Inspect the coil and fan array, note obvious airflow blockages, adjust dampers to balance return air so each zone reads within plus or minus 1.5°C of setpoint, and file the zone temperature checklist.
The tools that do the workMicrosoft WordWikipedia
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Manage HVAC systems for temperature control
+Perform a system survey of the HVAC for the packaging hall, record current setpoints, operating mode and…
Manage HVAC systems for temperature control
+Perform a system survey of the HVAC for the packaging hall, record current setpoints, operating mode and runtime hours, change faulty controller schedule to night setback and email the service summary to production and shift maintenance.
The tools that do the workGoogle GmailMicrosoft ExcelWikipedia
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Built on public evidence: O*NET®, ESCO, Wikipedia, U.S. Bureau of Labor Statistics, ILOSTAT. All sources & licenses
Built on public evidence: O*NET®, ESCO, Wikipedia, U.S. Bureau of Labor Statistics, ILOSTAT. All sources & licenses