Preventing mold growth in HVAC systems

Sometimes I curse the fact that I have asthma.  Dealing with it as an adult is hard enough, but growing up with it as an occasional disability put a serious hamper on my pursuits and dreams as a young child.  I struggled in team sports, always running out of breath and disappointing my teammates because of my reduced cardio stamina. General P.E. classes were even worse, and it didn’t take long for me to get tormented for using my inhaler when I was forced to pull it out during class once despite my best efforts to manage without it.  Some kids used to make cruel faces ridiculing me trying to catch my breath while making hand gestures in front of their mouths like they were holding inhalers. I have come a long way in the past 20 years, but my asthma and allergies have never abated. Instead of experiencing grief and ridicule in front of my peers, I’m now on an endless pursuit of disinfecting and remediating microbial growth in my air conditioning system.  I bought an older house that needed a bit of repair and remodeling before I ever moved in permanently. I convinced myself at the time that I could retain many of the old appliances in the house and in doing so decided to leave the old ductwork and HVAC system. Having a clean and properly running heating and cooling system is important for indoor air quality for anyone, but this is especially the case with those who suffer from asthma.  Trying to leave the old ductwork inside house was a bad idea, because after I moved in I ended up finding mold growth inside several air vents and soon thereafter started developing regular sinus problems. I’m now working on getting quotes for a brand new HVAC system. This includes the ductwork and air handler inside as well as the outside condenser unit along the edge of the house.