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Hey Ed, What’s the Difference Between Manual J® and Manual JAE®?


In this edition of "Hey Ed", Ed discusses the difference the difference between Manual J and Manual JAE

Hey Ed, what’s the difference between manual J and manual JAE? Manual J, which is the book that’s right here next to me is the full version and it has I guess call it the heavy math in it is a good way to describe it. It was written with the intention that computer programs were gonna be made from it, at the same time this book was published, there was a need for a handwritten version to still be available because at the time they were concerned that not all contractors would use computers, I think that's kind of silly but it retrospect we're talking around 2006 so maybe it's not so silly, the abridge addition can be done pen and paper, it is the version that I generally used to teach load calculations because it could be run on a simple spreadsheet, it is not as accurate as the big book, it's a very good teaching tool but it's not gonna be the process that I'm gonna look towards to do a load calculation on a modern home and that's the way I see it.

In this edition of “Hey Ed”, Ed discusses the difference between Manual J® and Manual JAE®

Ed Janowiak is the Manager of HVAC Design Education at ACCA.


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Posted In: Hey Ed, Technical Tips

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