Most of the manufacturers still think that crimp rings are a good idea. (Except for Rheem, york, Goodman/Amana)
Originally Posted by cody350
General public's attitude towards our energy predicament: "I reject the reality of finite resource depletion and substitute it with my own; energy is infinite, we just need an alternative storage medium to run the cars on. The economy can grow indefinitely - we just need to "green" everything! Technology is energy! Peak what?"