I am the type of person who likes to be prepared. There is nothing more useful than being prepared. No one likes it when you are not prepared. Teachers really dislike it if you find yourself unprepared. I always make sure that I am prepared when I have an HVAC system appointment. They often times ask me questions. They ask me when my maintenance appointment was. I always get those because it is good for the system. I also do not prefer to say that I am not getting them because I know that is not good. He might also ask me when the last time was that I changed my air conditioner filter. I make sure to do this often. It keeps my HVAC system from clogging up. I do not want this to happen because it would be putting dirty air into my house. It could also cause the system to stop working. There is no benefit not to ever change your air filter in any way. He could ask me other things such as what I think may be wrong with the system. I make sure that I am familiar with this system. This helps to see when something changes. I am able to identify when parts look different. They may change or become loose as they simply become defective. It is important to know your HVAC system well to be sure you are prepared for your HVAC technician. It makes their lives easier and it also helps them diagnose an issue too. Don’t be afraid to ask questions about your HVAC system to get at know it better!