Sometimes I wonder about my older brothers, however i think that they are smart & resourceful people, however they are actually great at ignoring their responsibilities! They might be great at holding a task & impressing their bosses, however they are not so functional outside of the workplace, and sometimes, it seems appreciate they are actually avoidant when it comes to usual adult tasks. This is really the case when it comes to my oldest brother & his penchant for having a dirty house, but for some reason, it seems appreciate he can never keep his indoor environment clean & safe, but every time I go over there, I am really appalled at the level of filth & the awful indoor air conditions. It does not help that my brother is a pack a day smoker who cares about having a cigarette indoors from time to time. I realized many years ago that he never followed through with any sort of indoor air handling unit repair or thermostat programming replaces, then he simply kept his air conditioner machine running day in & day out while he polluted his indoor air with his other activities. I was consistently suggesting that he call his central heating & cooling specialist for basic indoor air handling repair. However, he was insistent that his lungs were great & his central HVAC units would get by without any kind of professional inspection, however a few weeks ago he found out the hard way that he was wrong. His entire central air conditioner idea broke down & he had to finally call a professional HVAC worker. At that point, the heating & cooling specialist told him that his AC machine broke because the air filter had clearly never been changed, and my brother had to shrug his shoulders & nod while the AC machine was carted away.