Hot2000, in its current form, was not around in the 1970s. However, there were predecessors and earlier versions of energy simulation tools that contributed to its evolution. The roots of Hot2000 can be traced back to earlier initiatives and software developments aimed at assessing building energy performance. Notably, the Saskatchewan House pilot project, initiated in the 1970s, was a groundbreaking experiment in energy-efficient housing. This project laid the groundwork for understanding and developing methods to improve the energy efficiency of residential buildings. It acted as an influential precursor to the development of energy simulation software, which eventually led to the emergence of Hot2000 in the late 1990s. Hot2000 was a result of significant advancements in energy modeling technology, building on the principles and lessons learned from prior initiatives like the Saskatchewan House pilot project. As a robust and user-friendly tool, Hot2000 continues to play a crucial role in energy analysis and building performance assessment, aiding in the creation of more sustainable and energy-efficient structures.

NRCan (Natural Resources Canada):

• Residential energy analysis and rating software
• The Canadian standard for evaluating energy performance of houses and MURBs (multi-unit residential buildings)

Two versions:

• HOT2000 for use by energy advisors
• HOT2000 for general use (available to the general public)