I had a suspicion that there was some kind of signal sent to the air conditioner or furnace that made it release toxins into the air ducts.
Villains are evil, but if someone is an HVAC villain you better watch out! It was discovered that an evil villain was somehow using HVAC units to destroy the world. At any given point, he could trigger an air conditioner or furnace and cause it to spew out toxic poison. He seemed to only target his enemies. Everyone was scared to use their furnaces and central air conditioners, and instead they just ran their whole home air purification systems to make sure their air was free of toxins. HVAC technicians and cooling specialists all over the world were trying to find the source of these HVAC attacks. I was a young heating technician when I started trying to find the problem. I had built several of my own air purifiers, window air conditioners, and gas furnaces before, and none of them had the toxin problem. I soon discovered that the safest heating units to run in your home were the portable space heaters and the hybrid heating system. I did some more research and found that a mini split air conditioner was the best cooling option. The government hired me to use one of my HVAC units as a mock HVAC unit in order to find out where the toxins were coming from. I had a suspicion that there was some kind of signal sent to the air conditioner or furnace that made it release toxins into the air ducts. This toxin could seep through any HEPA air filter and most other air filters. There is a certain line of air purifiers that could filter out the toxins. Soon we would find the enemy.
commercial air conditioning