the heat exchanger from Recair cost me ~260 euro / pcs ~ 300 $ with shipping included for 2 pcs.
I don't know the name in english, something calling in romanian "prenadez"
after glueing I leave it for 5-10 minutes end than can be stitch together, like the glue for boots.
@kostas what kind of sensors do you use with arduino and where is placed?
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