We have heat and cold versions of the Braun/Lauer panels.
![](http://art-forum.84.s1.nabble.com/file/n2127/Annotation_2022-04-05_080910.jpg)
Panels are not too expensive. The secondary loops however, require Bernoulli bulbs in the pure water ring for each 2 outlets which can add a lot to the price for the s/s and PEX rings. PVC cold bulbs are much cheaper.
I prefer these because the water circulates all the way to the machine connection, reducing dead space.