I hope this is the right place to post this question. (I looked, but didn't see a forum that looked more appropriate)
Given the rediculous electricity rates in CA, I'm trying to do my best to reduce my KWH consumption. Replacing the 30 year old system with a zoned system that lets me only cool the areas of the house that we live in has gone a long way so far, but I'm interested in adding insulation (probably air krete because I already have 1" rockwool in the wall) where needed to control the heat gain as well.
I bought a temperature gun and was looking for suggestions as to the best way to measure the wall/ceiling temps. Currently with the upstairs off, even though the main upstairs & downstairs areas are open to each other, the temperature separation between downstairs and upstairs can be up to 10 deg F. This doesn't seem the ideal conditions under which to compare wall/ceiling temp. Do you guys recommend trying to have the whole house at the same temperature when measuring? Perhaps just running the fan but not the AC? Any thoughts would be appreciated so I can do an intelligent analysis of what my insulation needs are.