If you have a Jandy, it allows freeze protection in the range of 42-34 degrees. Hard to believe, but in so cali last February, our inland areas (Temecula Valley) hit the teens so this is really the first time we had to think of freeze protection in a while. I kept bumping mine down each night as the darn thing ran FOREVER!

I'm down to 34 and that is perfectly fine. Remember, it's an air temp sensor that triggers the freeze protect. That water will be flowing long before it has any chance to freeze.

Also, in freeing conditins, it's not really the pipes that are going to pop on you with the situation I just described. It's the small bits of water in the heater and pump. They freeze much faster and the damage is horrendous. We saw tons of damaged heaters here.

B

Hi, I believe the default freeze protection is 38 degrees I have adjusted it to kick on at 36 degrees. I may even consider dropping it to 34 since I live in the South and we don't get to many low 30's. So yes it's cool to change the setting lower.

I am in Dallas also and my pool is brand new (plaster 13 days ago), so not sure if this will be of help, but I had pool school yesterday and they said mine was set to come on when temp dropped below 38. It did kick on this last weekend.

I am in San Diego and the Freeze protection turned the pump and filter on sometime in the night. That's impressive. I was concerned about it given the few night last winter which killed lot of the trees/plants.

I read somehere that other equipment can also be programmed to turn on during Freeze protection cycle. Does the heater need to be turned on?

Thanks
--Scal

As long as water is running through the heater, you're fine. Keep in mind, the air temp is approaching freeze, not the water. Depending on your automation, you can program multiple items to turn on with freeze.