The Problem Index → Storage
I lost a whole freezer of meat and never knew until it was too late
This is the cheapest build on the whole site and the one that converts people. Twelve dollars, one weekend, and it pays for itself the first time somebody bumps a plug with a shop vac.
What actually works
◆ Proven
The $12 freezer alarm
A microcontroller and a probe reporting on your own network. A tripped breaker ruins $600–2,000 of food in 18–30 hours, silently.
~$12◆ Proven
Alert threshold: above 10°F for 30 minutes
Short spikes are somebody getting ice cream. This is one of the few alerts that always earns waking you up.
◆ Proven
Keep it full
Jugs of water in the gaps. A full freezer holds cold far longer during an outage — and the jugs are your emergency water.
Run the numbers
- Freezer & storage space → — free calculator, works offline.
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