I don't know, but bumped for extreme coolness.
I suspect that for a long time its refrigeration that will make the big difference, not air conditioning, just like OTL. Fresher fruits, vegetables, meats, and milks will have a big impact on health and childhood growth.
Probably too soon to affect the Civil War much.
Edit: La Wiki whispers in my ear that refrigeration go going not too, too long after this fellow died anyway. So maybe his big impact *is* on air conditioning. Its likely to be too expensive for much private use for awhile. So maybe you have two effects in the American South and in tropical colonial enclaves: a bigger focus on clubs, bars, and other areas of communal resort; and maybe condos or apartments as middle-class residences with shared AC, while only the poor and struggling and blue collar live in individual homes. An apartment-style communal-style suburbanization would be . . . wierd.