Hi, yes I have. After initial problems (which were due to an incorrect setting of the heat pump), we have been satisfied with the heat pump for almost a year. In the summer months, the heat pump only takes care of domestic hot water heating. In the period from 20.07. to 06.08., we used 24 kWh (3 people / were not away on vacation). In the autumn/winter months, we average about 400-450 kWh (heating and hot water). So everything stays within the announced range. The device itself runs stably and without problems. Only the outdoor temperature sensor had to be replaced.