Plumbing pipes can't be used for air conditioning due to differences in sizing. Copper pipe for plumbing is sold in nominal sizes, a measurement that is 1/8 inch less than the outside diameter. Copper pipes used in air conditioning are measured according to the actual outside diameter of the pipe.Continue Reading
There are three typical wall thicknesses available for copper piping used in plumbing. The K series has the thickest walls; it is generally used for plumbing that is buried. The L series is used for standard plumbing, while the lightest M series is used for low-pressure applications.
Both air conditioning and plumbing pipes can be purchased in hard or soft temper. Hard-tempered pipes are rigid, while soft-tempered pipes are flexible.Learn more about Heating & Cooling