My friend has the deadband on his AC setup to 3 degrees so his AC comes on fairly often. I've read that a lot of on/off intervals is not good for the compressor and is not very efficient. I was also thinking of combining AC with venting to cool the room very quickly but also have the deadband set fairly high, like 10 - 15 degrees (see Grow journal in signature for details). This way the room would cool down from like 85 to 70 or something like that. That way when the cooling period ends the CHHC-1 controller would blast the room with CO2 until it gets back up to 1500 ppm and the plants will have a longer CO2 uptake period before the next cooling period begins. This would also be a bit more efficient for the AC and easier on the compressor. (I will be upgrading to a mini split AC after I have a couple grows under my belt.) So the questions after the long explanation: is a 15 degree temp change considered dramatic? Would it adversely affect plant growth?

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Anyone have any info?

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