This week, we’ve got an investigation into the always-on vampires lurking in your home. Actually, one vampire in particular: your DVR box.The engineers over at Sense Labs recently started opening up and testing DVR boxes. They found that power-save mode doesn’t actually do anything — it only saves about a watt of energy.Compared to smart televisions, gaming consoles or smart phones, the power-save mode of DVR boxes is abysmal. But the cable industry says that it’s the overall efficiency of devices that matters — and they’ve slashed total power consumption by half since 2012.Should consumers expect more? In this episode, we investigate.This podcast is supported by Wunder Capital, the easiest way to invest in large-scale solar energy projects across the U.S. With Wunder, you can help finance renewable energy projects while earning up to 7.5 percent annually. Get started here to diversify your portfolio and support American solar projects. Subscribe to The Interchange podcast via Apple Podcasts, Google Podcasts, Stitcher or wherever you find your audio content.