Free Tools

BuildingSim

Use our BuildingSim software to model any building and analyze its heating and cooling costs for any climate. Create any building — from a one-room apartment, up to a 100+-floor skyscraper — and account for everything from window coverings to shade trees. Using actual hourly weather data from over 90 climates around the world, this software numerically solves full thermodynamic differential equations every minute of the year, giving you the actual energy usage down to the cent.

BuildingSim can be used to accurate simulate the effects of both construction and thermostat control algorithms:

  • Calculate the energy savings from home improvments
  • Analyze the energy cost trends from different climates or building types around the world
  • Measure accurate energy savings by using new thermostat control programs
  • View the seasonal changes of energy usage to plan ahead

BuildingSim is powerful enough for auditors to use, yet simple enough for enthusiasts to run. We also welcome engineers and developers to use BuildingSim to develop new and improved Halo/S™ algorithms to help reduce the world's energy usage.

Launch App