Pool owners in your neck of the woods have found Glacier Chillers to be useful devices. They operate on the same principal as swamp coolers (evaporative coolers) where the pool water is used in conjunction with spray wands and an air blower to cool the pool water. Users report easily achieving 6-8°F reductions in temperature. They don’t use as much electrical energy as a heat pump does since there’s no compressor involved but they do cost a pretty penny and they need to be installed by a a qualified installer that knows how to READ THE MANUAL. We’ve seen backwards Glacier installations that just scream “the guy installing it had no clue!”
Covers are ugly and a pain in the rear to deploy and remove. If you’re like 99.9% of people that buy one, you’ll hate them and, within a year, it’ll be riding off to the landfill on the back of a garbage truck.