Are Heat Pump Dryers Really Worth It? Miele Dryer Review. The first 100 people to use code UNDECIDED at the link below will get 60% off of Incogni: https://incogni.com/undecided Heat pumps are starting to catch a lot more attention for heating and cooling your home now than they have in the past. The same is true for other uses, but … this one really surprised me … what about putting a heat pump in your dryer? There’s some insanely cool, or should I say hot, engineering inside this dryer that doesn’t require a vent to the outside or a high voltage outlet. This thing runs off of a standard 15 amp household outlet and will use four to five times less electricity than a typical electric dryer. So if they’re that good, why aren’t they used everywhere? Well, I’ve been living with this Miele model for a while now and I have some thoughts on that. It’s one of my favorite pieces of new tech in my home. It’s kind of genius, but not perfect. How does this thing work … and are heat pump dryers even worth it?