Vent fans and a/c at the same time
At home we find it unnecessary in summer to run the het pumps on the own stairs level usually. We have a huge vaulted ceilign on one side and the cold a/c air sinks down, and sometimes makes it really...
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I frequently open the vent, but not turn on the fan. Lets the hottest air flow out by itself and allows the coldest air to drop to the floor. I "think" it works. Never did any calculations or anything. Makes me happy and that's what it's all about.
