A six-figure loss with nobody on site
During a long weekend, a Sacramento freezer failed and destroyed $125,000 in inventory while nobody was there to catch the fault.
TemperatureWise case study
$150,000 in frozen inventory saved after an alert about two days before the failure peak.
How TemperatureWise caught a failing freezer at a Philadelphia distribution center before a single smoothie was lost.
$150,000Inventory protected
~2 daysAlert to failure peak
$0Product lost
IncidentApril 2025
LocationPhiladelphia, PA
EquipmentFreezer RN1-138
Confirmed causeFailed defrost timer
OutcomeNo product lost
Overview
One portfolio view across three distribution centers.
A direct-to-home frozen smoothie brand monitors freezers across Mississauga, Philadelphia and Sacramento in one TemperatureWise portfolio.
In April 2025, the Philadelphia distribution center held about $150,000 in frozen inventory when TemperatureWise detected a developing evaporator-side fault. The AI alert arrived about two days before the April 22 failure peak, and no product was lost.
The challenge
Traditional alarms still leave operations exposed.
The brand needed more than a threshold alarm. It needed enough warning and enough context to act before inventory was at risk.
Three sites to protect as one portfolio
After that loss, the brand deployed TemperatureWise across its three distribution centers in Sacramento, Philadelphia and Mississauga.
Threshold alarms react after risk begins
Repeated alarms shorten battery life and still depend on someone acting. In Philadelphia, the freezer looked normal while its recovery worsened.
The save
One alert. One visit. Zero loss.
TemperatureWise pointed the Philadelphia team to a possible issue on the evaporator side two days before failure in that walk-in. One technician replaced the failed defrost timer and kept every shipment moving.
“Without your timely interference, things could have gone sideways. It turned out to be a great save.”Operations Manager, frozen smoothie brand
The temperature story
The freezer began signaling failure eight days early.
Real sensor data from the Philadelphia freezer, April 11 to 28, 2025. The rising temperature floor begins on April 14, well before the failure peak.
Evidence: view the exported sensor readings (CSV). The chart displays every third reading for readability.
Freezer RN1-138
Temperature
Safety line
Target
Loading sensor data...
Normal cycling near -0.4°F / -18°C.
The floor stops returning to -0.4°F / -18°C after defrost.
AI flags a likely evaporator fault at 10.4°F / -12°C.
Peaks at 31.5°F / -0.3°C. The technician replaces the defrost timer.
Stable below -0.4°F / -18°C. Zero inventory lost.
Insights: what the AI saw
A pattern problem, not a threshold problem.
- Pattern, not threshold. TemperatureWise learned the freezer’s normal defrost rhythm and caught a rising temperature floor beginning April 14, eight days before the peak.
- Actionable diagnosis. At 10.4°F / -12°C, the AI pointed operations to the evaporator side while inventory was still safe.
- Confirmed and resolved. The technician found a failed defrost timer and iced evaporator coil. One visit restored the freezer, and no inventory was lost.
Conclusion
Your freezers are already telling you what will fail next.
The question is not if your freezers will fail unannounced. It is when.
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vimal@renergytech.com