This temperature is a problem

My brother is a homebody.  I never met someone that is so pleased with being alone in his home.  I guess I don’t understand because the people I was with and I are completely opposite in this respect.  As soon as I hear of an opportunity to socialize, meet new people or travel I jump at the opportunity. She on the other hand has a set routine that he rarely deviates from.  Not only is he the poster child for a homebody he takes it to another level in addition to chooses to stay in his bedroom the majority of the time that he is home. I asked him why he chooses his bedroom over the other rooms in his more than two bedroom house in addition to he said it was because of the ductless program that he had installed.  She explained that he uses ductless program heating in addition to air program in his bedroom along with traditional Heating & Air Conditioning in the other rooms of the house. The traditional central air conditioning program sends cool air through the ductworks to all the rooms. With this program a lot of air can seep out forcing the Heating & Air Conditioning program to job warder in addition to waste energy.  She has found that by combining the two that he is able to conserve energy in addition to saving money. During the summer, he keeps the thermostat set at a moderate temperature while he is at work. But when he is ready for bed he prefers to sleep with the temperature much cooler. Instead of having to cool the whole house he is able to simply turn on the ductless component in his bedroom. The Heating & Air Conditioning specialist only took two days to install the system. So with the ductless program he is able to save money in addition to stay pleased in his cool bedroom.