MetaFridge Performance Data

MetaFridge operating at a Central African hospital with 3-6 hours of generator power each day — the facility has two generators that operate at different voltages. The vaccine chamber temperature remains steady while the ambient temperature varies throughout the day, with chamber temperatures only increasing when the chamber door is opened. During this time period this unit has a duty cycle of 6.3% and average energy consumption of 0.42 kWhr/day at an average ambient temperature of 35 °C.

MetaFridge operating at an East African clinic in an urban area with steady mains power, but occasional multi-day outages. During this time period this unit has a duty cycle of 2.9% and average energy consumption of 0.25 kWhr/day at average ambient temperature of 22 °C.

The MetaFridge remote monitoring system sent an alarm for elevated temperatures. Technicians noticed that the high temperatures occurred after door openings. A phone call to the facility revealed that the door was left slightly open (but not far open enough to trigger the door sensor), and the temperature returned to normal after the door was closed properly.

MetaFridge ColdSafe technology maintained safe vaccine temperatures at an East African clinic throughout 8 days without power followed by additional multi-day outages. The refrigerator was used normally with daily door openings throughout the outages. Nurses were able to see on the display that the holdover time never dropped below 2 days, assuring them that the vaccines remained safe until technicians were able to visit the clinic and repair the electrical outlet.