Rasch and built by piggy

I want to reduce power consumption in our house, I replace gradually especially very old energy guzzlers. This time had our old heating circuit pump, a Wilo RS 25 / 60r, believe in it, who ran in the third stage with 70watt. I had shifted down times on 55Watt, in which case, however, our radiators were not really hot on the top floor. I can not say anything, just that she is at least 20 years old on the exact age of the pump. Maybe it's so anyway due soon.

Thanks to the positive reviews here it was a Wilo again, partly because the Stratos Pico is recommended, compared catalog Wilo as a replacement for the old pump.

One day after the order unleashed a new pump. You really could be very easy to install: old pump out, provided power connection of our gas heating with the supplied plug, installing new pump, plug, done. The whole thing was done in half an hour. After I then turned on the heater again, shone a little delayed on the display of the pump and it then appeared the error F11. Quick manual checked: Air in the system / too little pressure. So replenished some water, bled the radiators, then leave again through the ventilation function of the pump, voila, pump is running. I have it set to 2, which is probably sufficient for our house completely. Mir schwant that the old pump was completely oversized for our heating, which may also be because, that we have renewed nearly all radiators in the house.

Depending on how many radiators are turned up, the pump now consumes 4-8 watts, but mostly it rotates at about 4 watts in front of them. Unbelievable. Even if it takes some time until the pump will pay for itself (our running of 6-24Uhr with stops and only 5 months a year), I am very satisfied. The only drawback is the steep price for this pump. And: the electronics, the pump probably more susceptible, and there is hardly any real experience that say something about the durability of the pump.