The invention comprises systems and methods for estimating the rate of change in temperature inside a structure. At least one thermostat located is inside the structure and is used to control an climate control system in the structure. At least one remote processor is in communication with said thermostat and at least one database stores data reported by the thermostat. At least one processor compares the outside temperature at least one location and at least one point in time to information reported to the remote processor from the thermostat. The processor uses the relationship between the inside temperature and the outside temperature over time to derive a first estimation for the rate of change in inside temperature assuming that the operating status of the climate control system is “on”. The processor also uses the relationship between the inside temperature and the outside temperature over time to derive a second estimation for the rate of change in inside temperature assuming that the operating status of the climate control system is “off”. The compares at least one of the first estimation and the second estimation to the actual inside temperature recorded inside the structure to determine whether the actual rate of change in inside temperature is closer to the first estimation or the second estimation.