System comprising • an air exchange device for a zone, • a heating device for the area, • a presence estimation device configured to estimate whether or not an individual is present in the area repeatedly, so as to obtain a sequence of results associated with successive times, each result indicating whether an individual is present or absent in the area at the associated time, • a control device configured to: ∘ identify in the sequence: (a) a subsequence indicative of a continuous absence of an individual in the area over a duration less than a first temporal threshold, surrounded by two related subsequences indicative of a continuous presence of an individual in the area over two durations greater than a second threshold, the second temporal threshold being greater than or equal to the first temporal threshold, and/or b) a subsequence indicative of a continuous presence of an individual in the area over a duration less than a first temporal threshold, surrounded by two subsequences indicative of a continuous absence of an individual in the area over two durations greater than a second temporal threshold, the second temporal threshold being greater than or equal to the first temporal threshold, ∘ matching the results of at least one subsequence identified in the identification step with the results of the two related subsequences surrounding the identified subsequence, so as to obtain a modified sequence of results, ∘ control the air exchange device and the heating device according to the changed result sequence. • an air exchange device for a zone, • a heating device for the area, • a presence estimation device configured to estimate whether or not an individual is present in the area repeatedly, so as to obtain a sequence of results associated with successive times, each result indicating whether an individual is present or absent in the area at the associated time, • a control device configured to: ∘ identify in the sequence: (a) a subsequence indicative of a continuous absence of an individual in the area over a duration less than a first temporal threshold, surrounded by two related subsequences indicative of a continuous presence of an individual in the area over two durations greater than a second threshold, the second temporal threshold being greater than or equal to the first temporal threshold, and/or b) a subsequence indicative of a continuous presence of an individual in the area over a duration less than a first temporal threshold, surrounded by two subsequences indicative of a continuous absence of an individual in the area over two durations greater than a second temporal threshold, the second temporal threshold being greater than or equal to the first temporal threshold, ∘ matching the results of at least one subsequence identified in the identification step with the results of the two related subsequences surrounding the identified subsequence, so as to obtain a modified sequence of results, ∘ control the air exchange device and the heating device according to the changed result sequence. ∘ identify in the sequence: (a) a subsequence indicative of a continuous absence of an individual in the area over a duration less than a first temporal threshold, surrounded by two related subsequences indicative of a continuous presence of an individual in the area over two durations greater than a second threshold, the second temporal threshold being greater than or equal to the first temporal threshold, and/or b) a subsequence indicative of a continuous presence of an individual in the area over a duration less than a first temporal threshold, surrounded by two subsequences indicative of a continuous absence of an individual in the area over two durations greater than a second temporal threshold, the second temporal threshold being greater than or equal to the first temporal threshold, ∘ matching the results of at least one subsequence identified in the identification step with the results of the two related subsequences surrounding the identified subsequence, so as to obtain a modified sequence of results, ∘ control the air exchange device and the heating device according to the changed result sequence.