Youz guyz run a totally dafrant system than us hea in da south. Do you know if you don't salute de liquad in da intercooler it will freeze and break youalls pipes and fittens. Pump 1st den da fittens. Need to dilute da inhibited glycol wit da tap watah. If snot,, boom. I have had 2,500 ton glycol chillers freeze up and crack on me cause da mixture wasn't right. The chiller manufactor sets up an account wit a chemical company to run cleaning agents and sulverate acid thru em. Clean and make sure day don't freeze up. You can purchase a small $$ critter fer your ra dit e a tor to measure this acceptable. Tad critter 2 luck at ia alot cheaper than a pump, fittins, and or pipes splitten. I used 2 run dees machines at -40 sdeegrees. At ice cream factories, blast freezers, chocolate manufactories,, hospitals. Now you want 2 talk ah bout clean air?? There is UV lights I have installedd into air handlers 40 tons and better. How da hos spitals keep surgical tools germ free. I have bean installen them into AHUs in power plants, hospitals, surgical centers// dead peoples, sport theaters, ect s. I have a 25 ton in my mouses ass. Coil never gets dirty. My house, great fer young developing kids lungs.