When I was a little kid and my oldest brother had terrible asthma attacks. There were more than a few occasions when he couldn’t breathe and wound up in the emergency room because none of his emergency implements were working at home. The strange thing for everybody was seeing what a little athlete my brother was. He always had an incredible ability to play any sports and dominate the field. He was the best player on every team despite the fact that he couldn’t breathe half of the time. Late at night is when his asthma attacks would overtake his little system and we would have dramatic family evenings waiting for my brother to be able to breathe again. The doctors and my parents were baffled by his respiratory distress. Eventually, we realized but his asthma was caused by our air ducts. One doctor finally asked how our central heating and cooling system was doing. It seems like a random question for the medical professional to inquire about air indoor air quality and air temperature control systems. We thought maybe he was just a weirdo with a strange thermostat obsession. Until… My parents answered honestly that the heating and cooling system wasn’t in such great shape. Apparently our air conditioning system was rather old and the furnace was even older. My parents never called a professional heating and cooling technician to handle the routine service appointments with our heating and cooling equipment. When a professional HVAC tech took a look at our air ducts he was actually revolted. No wonder my brother could never breathe, our house was choking with clogged ductwork.