Do I need inhibitor?

[Conor]

Thought just popped in to my head the other day. Do you need inhibitor in an UFH system?

 

All plastic piping, short lengths of copper pipe at the buffer and DHWC, and of course metal components in the heatpump. Presumably stainless steel or brass. Currently filled with water and glycol. Lovely pale blue colour 😀

[PeterW]

Nope - your glycol will be an inhibited glycol mix so not 100% glycol. 

[Conor]

Cheers. Just found the empty drum outside and says inhibitor on it, so happy days.