Tag Archive for 'car ac system'

How to find low side and high side on an a/c unit

John’s question: Which is the low side and high side on an a/c unit” Answer: The low side is generally the thicker AC line while the high side is the thinner diameter line. On all modern cars with 134 A refrigerant, the low side line has a smaller diameter port fitting where you add the […]



css.php