This time of year people often have questions about the pool's Freeze guard.  Keep in mind I'm writing from north Texas so we keep pools open year round rather than shutting down pools and blowing out lines.  Every year right at the start of cold weather season I have clients start to call or email and say "My pool was running all night" or "my pool is kicking on at odd times" it's kind of funny because I guess after our long hot summer we forget that it does get cold again and even freeze once in a while.  Then it never fails they say "I turned it off."  I guess they just got tired of hearing the pool pump running or they thought it was costing them a lot.  Of course they are forgetting that a frozen pipe, resulting in a broken pipe, or some filter damage, or a multitude of other problems could cost a lot more.  Then I have the clients that keep turning the temperature setting on the freeze guard down because it seems like it comes on too soon.  So here is the question, at what temperature does the freeze guard need to come on?  The answer is 38 degrees.  BEFORE anything can freeze. 
 
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