Hello Elchfans, what about the performance of your auxiliary heaters. With me it looks like with frozen windows all around: – 5°C Outside temperature without sun exposure – Running time 30min – Position heating regulator 26°C Result: – Cooling water temperature first beam – quite low? – Front disc free – Side discs front two holes with approx.15cm diameter – Everything is tight at the back – Interior temperature pleasant Is everything in the frame or can I let them up in the power??? Given the nevertheless high noise level I had expected more power. Is my first floor heating, therefore I have no experience and do not want to make myself a dep when friendly. Thanks for every hint or observation. Greetings from the “Ar…kaltem” Schwabenland Pasmo