Radiator Feed Size Question?

Nail banger

Doing some plumbing work in my house and have a question. I had 1/2" pex so I ran that to a radiator I added, the rad doesn't get as hot as the other rads in the house. Is it not enough flow? I am a carpenter not a plumber by trade.

flashheatingand

The pex isn't a great idea. I don't know much about hydronics, but there is a special type of pex for hydronic heating if you are going to use plastic pipe.. Another thing, have you bled all of the air out of this radiator? This is coming from someone with very limited experience with hydronics, take that into consideration. Good luck

22rifle

It has to be 3/8" to balance the flow. Seems backwards but that's how it works.