About the R-2000 Standard
	The R-2000 Standard
	HOT2000 software
	Whole-house ventilation
	How a heat recovery ventilator works
	Indoor air quality and environmental features
	High-performance windows
	Heating systems
	Engineered floor systems
	Advanced wall systems

HOT2000 Software

Trained and certified R-2000 plan evaluators use HOT2000 software to determine how much energy each home will use and to ensure that this level is at or below the energy target set by the R-2000 Standard.

Here’s how it works:

1. Enter house specifications. First, the evaluator enters the home's specifications into the HOT2000 program. This includes the home's dimensions and the energy performance characteristics of key components, such as windows, wall assemblies, roof type and attic insulation. Specifications on the heating, cooling and ventilation system types and efficiencies are also entered.
2. Enter location data. Next, the evaluator enters the home's location and site orientation. HOT2000 has climatic data for all areas of Canada. It will also calculate the amount of solar heat gain or loss, based on the type of windows and the amount of direct sunlight they will receive.
3. Calculate energy use. Finally, HOT2000 calculates how much energy the home, as modelled, will use in a year, operating under typical conditions. If this amount meets R-2000 requirements, the house is approved for certification. If not, the builder will have to make changes to the home to meet the R-2000 Standard before it can be certified by Natural Resources Canada.

R-2000 and HOT2000 are official marks of Natural Resources Canada.