On today’s show we are looking at the most cost effective ways to value engineer a new build and still comply with the increasingly stringent energy codes that are permeating the building code across North America.

These building codes are local. That is to say, they can vary from one place to the next.

When it comes to energy codes, there are two approaches that are used.

The prescriptive method
Comprehensive energy model

Under the prescriptive method, the building department says that if you use this type of construction, with this specific insulation in the wall and attic cavity, and continuous insulation on the outside, and heat pumps having these specs, and these types of windows having no more than a prescribed percentage of window area, then you will comply with the code.

It should come as no surprise that this kind of paint by numbers approach is going to give you an energy efficient building. But it’s also going to cost you a lot more than it needs to.

The second method is using a comprehensive energy model.

This is where the energy consulting engineer will create a thermal model for your building based on your local climate. It will take into account the temperature averages throughout the year and determine how much heating is going to be required in the winter and how much cooling is going to be required in the summer.

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Host: Victor Menasce

email: podcast@victorjm.com

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