Using an incentivized survey experiment with about 10,000 German households, I estimate the willingness to pay for programmable heating thermostats. Specifically, I examine whether information asymmetries are responsible for the low adoption rate and thus seemingly low valuation of this digital technology that can help households save energy. To this end, I randomly provide households with information on either the private good features of the thermostats, i.e. the reduced energy consumption and thus energy cost, or the public good features, that is a reduction in carbon emissions. The results suggest that informing households about the potential cost savings does not significantly increase willingness to pay (WTP), whereas informing households about potential emission reductions significantly increases average WTP by about 6 Euro. Yet, I find evidence for heterogeneous treatment effects, with the private good information treatment leading to a significantly higher WTP for larger households and households living in rather new buildings. Finally, I do not find evidence that factors like risk aversion, technology acceptance, craftsmanship or data privacy significantly influence households' WTP.