Hey Tech Rob, thanks for the info. That's some good reading material which you sent.
Definitely, thanks Rob! Also a thank you goes out to everyone participating here. Today's my reading day Also that primer posted by alcomech was pretty useful as it gave me a better idea on the entire ICI space heating/cooling systems that I've only seen in bits and pieces (lots of filters and belts, washing coils, compressors, running a few sections of tin and a few electrical gremlins). Never had a good overview of entire systems, even after reading a couple of texts that were supposed to give me that.