Tools

Tools for building performance.

Each one runs entirely in your browser — no account, no upload, and nothing kept after the tab closes. Open source where the licence allows it.

Psychrometric Studio
Live

Psychrometric Studio

Moist-air analysis for real buildings

  • Seventeen equipment types, solved stage by stage
  • ASHRAE 55-2023 comfort, evaluated live as you work
  • A full year of EPW weather counted against your design
ZEEL
Beta

ZEEL

Zoned energy estimation for laboratory buildings

  • Twenty-one lab zone types, entered as areas
  • Estimated EUI, carbon and operating cost from the programme
  • Five climate zones and seven conservation measures