What is a bioshelter?

A bioshelter is a small, above-ground living space that keeps slight positive pressure so air leaks outward, not in. All intake air passes through a serial stack of HEPA filters sized to maintain pressure and low particle counts. Core elements: intake prefilter → HEPA/ULPA stages; variable-speed fan; airtight envelope; pressure & air-quality monitoring; power redundancy (UPS/generator port).

Not a bunker: no underground/blast claims; focus is clean air and habitability.

Limits: no system is absolute; performance depends on proper setup, maintenance, and power.

Why positive pressure? If a leak occurs, air flows out; contaminants don’t flow in. See general references on cleanrooms and positive pressure.

Emergency use aside, clean-air capsules can also serve as quiet, low-allergen spaces in normal times.

Further reading:
https://en.wikipedia.org/wiki/Cleanroom

https://en.wikipedia.org/wiki/Positive_pressure

Last updated: Aug 18, 2025 · Fonix AB · enquiries@fonixlogistics.org · +46 733 78 73 75.