I was holding a slumber party for my daughter and her friends. The day before the party, my daughter Zaire told me that she would wear her new pajama set, and since it was not as warm as the others, she wanted to know how we would keep the house warm enough for her friends and her. I assured her that everything would be okay. We had to reset the digital thermostat to her desired settings. This answer opened a new forum for questions about our HVAC system. I told her a simplified version of how our electric heat pump worked. The Q&A session reminded me that I needed to call the air conditioning company to deliver an AC filter. The a/c care was six months overdue, so I included quality AC service when I reached the air conditioning professional. The air conditioning technician arrived late afternoon when my daughter was getting home from school. Zaire was so excited that she followed the cooling expert to the unit. At first, I stopped her because I thought she would be more of a distraction to him, but he stopped me and told me to allow her to stick around. She was even more excited when he called her his assistant. The tech thoroughly inspected, cleaned, and lubricated the different parts of the a/c setup, including the ductwork. During dinner, Zaire spent the entire time telling her father about everything the tech did and everything he had told her about the HEPA filter. Zaire was anticipating his next visit so she could ask him about how to improve air quality and the commercial air conditioning system like the one they had at school.