It is in the early winter season and it is not operated yet. It can also be used for resin pipes and construction can be done easily even by an amateur. The unit price per meter is about 3000 yen. I wish I could make it a bit more cheap.
I do not know because it is not cold enough to be frozen, I do not understand how to install it well, but I tried to devise myself. Since we had to attach a power thermostat separately (because of our PVC pipes) it was appreciated that there was a set of items.