Quote:
Originally Posted by phillip
What if you have 2 a/c units, one for upstairs and one for downstairs? I've heard all kinds of different advice on running one or both. Some say set both to same temp always; some say run only upstairs and let the cooler air drop to downstairs; and some say run the downstairs unit when you're downstairs and upstairs unit when you're upstairs.
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Don't know for sure but when we have shut the upstairs unit off the downstairs unit has a harder time keeping the first floor cool.