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FrostDen
Passive Cold Storage for Off-Grid Communities
Self-assembling units powered by phase-change materials and sun-tracking ventilation. Inspired by igloo insulation and fox den earth tubes.
4°C
✨ The Wow Moment
A rural health worker in 40°C heat opens a sleek, igloo-shaped unit to find vaccines perfectly chilled at 4°C - no power, no ice, no ongoing costs.
Just smart materials working with nature.
40°C
Outside Temperature
4°C
Inside FrostDen
How It Works
Phase-Change Materials
Smart materials that absorb and release thermal energy to maintain consistent temperatures for days.
Sun-Tracking Ventilation
Passive ventilation that follows the sun, optimizing airflow without electricity.
Igloo-Inspired Design
Spherical shape with advanced insulation provides maximum thermal efficiency.
Earth Tube Technology
Underground air channels cool incoming air using the earth's natural temperature.
Simple, Transparent Pricing
FrostDen Unit
$2,500/unit
- Complete unit with installation
- Training for local staff
- 5-year warranty on materials
- Remote monitoring system
- Monthly performance reports
$180/year
Replaceable phase-change cartridge subscription
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