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The benefits of an investment in an energy efficient durable good depend on the life of the investment. If the expected length of ownership is mis-estimated, this will bias calculations of the benefits of energy efficiency, including estimates of the energy efficiency gap. This paper estimates how expected ownership length affects household appliance choices. I leverage the fact that some types of appliances are expected to convey (be included) with the sale of a house, while other appliances may or may not convey depending on local customs that vary at the state level. An appliance that conveys will be left behind when a homeowner moves, while an appliance that does not convey may be kept until the end of its useful life. I estimate the effect of an appliance conveying using a difference-in-differences across states and appliance types, allowing me to control for state-level trends using fixed effects. I find that consumers purchase less expensive refrigerators and clothes washers when those appliances convey. I show that accounting for whether an appliance conveys can substantially reduce or eliminate apparent undervaluation of energy efficiency benefits.