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I just bought a Hayward W3HP21004T heat pump to replace our older Hayward model. I would like to be able to control the temp remotely from my iPhone. I have been looking at all the automation options and my head is spinning. Can anyone steer me in the right direction for a simple system to...

I have a very small pool/spa. It is roughly 7x17 and 54" deep.... approximately 3,500 gallons. We live in the Pacific Northwest. We have a Hayward heat pump that heats our pool very nicely until November and then starts working again in March. We keep the pool/spa very warm.... like 92 to 96...