Plumbing help - can I use this pex for baseboard water heaters

[John McAllister]

Can I use this type pex to connect the water base board heater? Why did I does this? I ordered the wrong fitting (it’s an expansion one) and now I have all the fitting sweated on already. So I plan to put an expansion connection to fitting on right and then connect with shark bite on Left.

[John Teachout]

I'm not sure what the issue is, why don't you just get the appropriate pex for the fittings you have? I wouldn't want to have a jimmy rigged situation right from the get go. What type of PEX does the heater manufacturer require/recommend? Some heat systems want an oxygen barrier and some want pex-al-pex type pipe (which probably can't be expanded...) Figure out what you need and do it right even if you have to redo something.