Bosh tumbledryer

It’s a very nice looking tumbledryer , it is quite compared to my old one. It takes a long time to dry which I have a big family and yesterday I had my old one on as well as new as it was taking to also seems to shrink certain items which has been tumbled be for and never shrunk. We brought this new one to try and save on our energy bills as of yet I wouldn’t no if it’s cost affective.