On Mon, 04 Jun 2007 10:25:19 -0700, wrote:

How hard is it to do the "Manual J" A/C tonnage calculation for a
residential detached home?

(Case in point: a 1966 brick ranch home in Denver Metro; 1400 sq ft
main level, 1200 sq ft basement.)

What is the procedure to follow? Download the Manual J spec and follow
the instructions? Or is there some kind of software or Excel
spreadsheet that will make the calc easier?
http://www.hvaccomputer.com/gsizeindex.asp
http://www.buildingscienceconsulting...sizing_pro.pdf