Solar Hot Water question - How can I control the temp of my hot tub when using a solar hot water heater set up? Answered
I am building a solar hot water system for my hot tub. It will be independently plumbed to keep the original heater and pumps intact and operational. My question is, how can I get the solar system to turn on only when the hot tub is cooler than a certain tempurature and have it turn off if the water being returned from the solar system is colder than the hot tub's current temp? Any ideas would be appreciated!