stevie wrote:
heard a guy on talk radio state that higher efficiency air conditioners are
a waste of money.

unfortunately, i didn't get his reasoning, or what seer point is not worth
considering. i am considering replacing my 12 seer with a higher efficiency
unit. my current unit is about 16 years old, but still works (Trane).

is it advisable to replace my 12 seer with a higher seer?

Depending on what he compared. If one compare 16SEER vs 19SEER units,
real life savings might be about few cents / month.