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I was looking at the responses to @dm9321287 recent post
and the answers reminded me how much I hate boiler outdoor setback and integrated boiler controls in general. They may be helpful some instances, and help manufacturers meet government mandated efficiency targets, but my experience has been they are terrible in a few applications and contribute to short cycling, especially where a buffer tank is not used. So I have a question for the pros: if outdoor setback is so great, why is it not commonly used in AC cooling, especially since temperature swings in the summer are often greater than winter after or before a thunderstorm, for instance?