allSTOR is the new range of steel buffer storage from Vaillant, which can be combined with a range of different types of enery sources: solar, heat pumps, pellets, Oil, gas and microCHP.  Intelligent and simple to use and install, the range consists of six versions: from the VPS 300/2,perfect for the one family home, to the VPS 2000/2, which is suitable for multiple family homes or businesses.