Up to $125,000 in one reefer
The stationary reefer protected a variable production load, estimated at $100,000 to $125,000 in frozen inventory.
TemperatureWise case study
A holiday-season alert helped protect up to $125,000 in frozen inventory.
TemperatureWise caught a failed automatic restart in a stationary reefer at a Mississauga production site, giving the team hours to intervene before the safety line.
Up to $125,000Estimated inventory protected
4 hoursFrom stop to alert
~1 hourTo restore target range
IncidentDecember 26, 2025
LocationMississauga, ON
EquipmentStationary reefer trailer
Confirmed causeWeak battery
OutcomeRestarted near 10:00 PM
Overview
One stationary reefer. One missed restart. No one on site.
A frozen smoothie brand used a stationary reefer trailer as production storage at its Mississauga site. It held an estimated $100,000 to $125,000 in frozen inventory.
At about noon on December 26, 2025, during the holiday season, the reefer stopped during an automatic operating cycle and did not restart. A weak battery was confirmed after diagnosis.
The challenge
A routine engine-off period became a no-start event.
Automatic start-stop modes can look routine. The risk begins when the reefer does not restart and no one is on site to see the temperature rise.
The holiday season removed the visual check
The no-start occurred on December 26, with no one on site to distinguish a normal engine-off period from a failed automatic restart.
Cooling did not resume by itself
The temperature trace rose steadily for hours. The weak battery was confirmed after diagnosis, but the sensor data showed the operational risk before then.
The intervention
The team was alerted before the safety line was crossed.
TemperatureWise notified the team at about 4:00 PM, while the reefer was still at 10.9°F / -11.7°C. It crossed the 17.6°F / -8°C safety line at about 9:45 PM. The reefer was restarted around 10:00 PM and returned near target within an hour.
The failure was not a dramatic breakdown. It was a routine stop followed by a restart that never happened.Incident summary, Mississauga production site
The temperature story
Hours of sensor data show the stop, alert and recovery.
Real sensor data from 8:00 AM on December 26 to 4:00 AM on December 27, 2025. The reefer stopped near noon, the team was notified at 4:00 PM, and cooling resumed around 10:00 PM.
Evidence: view the exported sensor readings (CSV). The chart displays every third reading for readability.
Stationary Reefer
Temperature
Safety line
Target
Loading sensor data...
Normal cycling holds near 5°F / -15°C.
The stationary reefer stops and does not restart.
TemperatureWise notifies the team while the reefer remains above the target range but below the safety line.
The temperature crosses the 17.6°F / -8°C safety line.
The reefer restarts. Cooling returns and reaches near -0.4°F / -18°C by midnight.
Insights: what the AI saw
The warning arrived before the stationary reefer lost its safety margin.
- A clear change in behavior. Normal cycling ended near noon and became a steady rise, consistent with cooling no longer operating.
- Action before the threshold. The 4:00 PM alert arrived at 10.9°F / -11.7°C, about 5 hours 45 minutes before the trace crossed 17.6°F / -8°C.
- Confirmed recovery. After the weak battery was diagnosed and the reefer restarted around 10:00 PM, the temperature returned near target within one hour.
Conclusion
A weak battery should not become a six-figure inventory loss.
TemperatureWise gave the team hours to act before the stationary reefer crossed the safety line during the holiday season.
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vimal@renergytech.com