Hi everyone,
From short time i have blazer 2001 year. I notice when blower is set on windscreen a/c compressor start, and is no way to turn it off.
I now that is normal, for some cars, but I want to disable this function. Do anybody now how ???
,

 

Welcome to the forum. Yes, it's normal for the A/C compressor to run when the blower is set to defog the windshield. It clears the windshield faster because the evaporator is used as a dehumidifier. No moisture in the interior equals nothing to condense on the windshield.