Hi,
The A/C compressor is designed to cycle with the defroster on. It is used to help dehumidify the air entering the vehicle. That way, it defrosts the glass faster.
Based on your description, it sounds like it is working as designed.
Let me know if this helps or if you have other questions.
Take care,
Joe
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Sunday, January 7th, 2024 AT 12:12 AM