Student reviews

Excellent look at what you can do with an existing house in a cold climate. Lots of detail to ponder.

I love Mark's attention to detail, and even though this was a brief overview of a DE retrofit, he gave me confidence that I am in good training hands, for instance, in mentioning the flashing and critter guard details at the bottom of the exterior-mounted trusses. Thank you, Heatspring, for making this a freebie.

The case study is an eye-opener on how I can help Nigeria decrease her carbon footprint.

none

good

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Easy to learn

This is a great real life example of making green improvements to a home

Must have video. All info in one place.