1/2" pex to 3/4"copper baseboads

[kingriver]

When we built the two story house we installed a loop in the joisting around the upstairs perimeter. We are wondering if we can now cut into this pex 1/2" and ad some baseboard heaters with 3/4"slant fin in several rooms. Will i be creating a big problem going from 1/2" pex to copper 3/4" / then back to 1/2" then running to additional basebkards

 

[havasu]

bump.........

 

[frodo]

you used 1/2'' pex. .360 id you do not want much heat do you?

not being an engineer. but having installed miles of tubing for infloor and base board heat.

I have never. installed anything less than 3/4 [.875] id for heat.

http://www.comfort-calc.net/pipe_sizing.cfm

 

[johnjh2o]

As long as it is on a separate zone and there is no more then 30' of baseboard on the loop you will be OK. Slant fin also makes 1/2" baseboard.
'

 

[Matt30]

All of my heating renovations are done in 1/2" pex when replacing KiTec or poly-B. If done correctly, you will not notice any difference in heating your home.

 

[frodo]

learn somthing new everyday....3/8'''heat huh.

 

[Matt30]

If you use crimp fittings, yes. Straight up 3/8". I use the expansion system though, so I keep the same pipe diameter, slightly larger.