Abstract: A heating, ventilation, and air conditioning system includes a heating system to heat an interior of a dwelling, an air conditioning system to cool the interior of the dwelling, and a ventilation system coupled to the heating system and air conditioning system to convey air into areas within the dwelling. A control system is coupled to the heating system, the air conditioning system, and the ventilation system, and includes at least one sensor to detect an environmental parameter related to the interior of the dwelling, and one or more processors for receiving data generated by the at least one sensor. The one or more processors to obtain an instruction to vary an environmental condition of the interior of the dwelling, analyze the environmental parameter in response to receiving the instruction, and determine whether to ignore the instruction to vary the environmental condition based on an analysis of the environmental parameter.