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Anyone try those mist-n-save ac condenser sprayers supposed to save money?
Just heard of these units--spray heads put out mist that gets sucked into condenser, cooling the air going into it. Comes with calcium filter to ensure fins don't get coated with calcium. I have seen misting systems in European restaurants that work great with people, but not sure about this. Some online comments I've seen from HVAC people:
"A piston metering device controls Freon flow with pressure difference. Spraying water on the outdoor coil lowers the head pressure. Therefore lower pressure difference, therefore lower flow through a fixed oriface. Therefore less cooling. However efficiency can go up, so compressor amps drop. If you use water spray, you will need to add Freon to get enough cooling. If you have a TXV, you will have less trouble. "
"water fills up the condenser fins creating less heat transfer un less the water is 50* lower than the ambient temp you are pissing in the wind .......and on your unit! "