1. A system comprising: a computing device programmed to identify an upcoming user transition from a first climate-controlled context to a second climate-controlled context; and precondition the second context in accordance with a correlation, for current environmental conditions, of climate control selections in the first context to different climate control selections in the second context, the correlation identified according to a user profile including historical climate control selections and environmental conditions across a plurality of climate-controlled contexts, wherein one of (i) the first climate-controlled context is a home premises and the second climate-controlled context is a vehicle or (ii) the first climate-controlled context is the vehicle and the second climate-controlled context is the home premises.