Anybody experience with them? Prices look great, just not sure about long term life (only 1 year warranty) and noise (52db). How does the tech spec compare to the likes of Daikin, mitsubishi, or Samsung? The COP for 45c dhw is about 3.4, reasonable? Otherwise, the 6KW version would be perfect for my heating (3 small ufh loops) and hot water (180l tank + solar PV immersion in summer).   Any feedback appreciated. Could it be used for cooling?   https://coolenergyshop.com/produc