Heating degree days......

[heaterman]

Here's a good write up about heating degree days by an old friend in the industry, Steve (Wheels) Weiland.

Not only an expert in the heating biz but also an aficionado of all things "brewed" (beer).
It's a good read, good info to understand.

http://www.energyvanguard.com/blog-...als-of-Heating-and-Cooling-Degree-Days-Part-1

 

[Fred61]

Very informative and well written however as fanatical as I am about building efficiency, At this point I prefer a less scientific and a more "seat of the pants" approach. A few degree days one way or another seems to be less of a factor when my house is insulated way beyond what is practical.

Now, does he write a blog on "fermented fluid"?(BEER)

 

[heaterman]

Does a lot of home brew but I don't think he blogs about it. Just enjoys it....

And you are so correct! Building efficiency is the key.

 

[arbutus]

This reinforces the need to have an accurate heat loss value for the building or living space. HDD gets you an annual number useful for calculating operational costs or payback, but only if you know with certainty what the heat loss is or will be.