PEX..? Should I be worried?

My client wanted to extend his forced hot water heat into the back bedroom. I usually only use copper but this was tight so this was an ideal situation for the PEX tubing. I'm concerned about the fittings. I used 3/4" sweat x 5/8 PEX, easy, fast. It was a crimp connection that seemed fine, but I'm worried about the longevity of it. Should I be?





No problem getting to where I wanted. I am concerned about the fittings.

If the pipe and fitting is rated for heating, I wouldn't worry.