Summary
Dear Jim: I see so many ads for products and services to make my home more efficient that I get confused. Can you explain a bit about how a house loses and gains energy so I can better evaluate marketing claims? -- Ron M.
Dear Ron: It is wise to get a sound understanding of how a house loses (winter) and gains (summer) heat. The first step in this understanding is learning the basics of heat transfer.See the full content of this document
Extract
Understanding How a Home Can Lose Energy
Heat energy flows in all directions equally and is not affected by gravity. To the contrary, hot air flows upward because it is less dense than cooler air. If you put a ...
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