My children could not stop talking about how delicious the hotdogs and the new hotdog stand down the street was, and the dogs were wagging their tails, ready to go for a walk. We decided to go out for a morning snack while walking the pets. The kids were right, and the hotdogs were so delicious that I had to go for a second, but my partner got into a conversation with the owner of the stand. He mentioned something to do with air quality systems. I immediately asked him if he knew a sound air purification system because our indoor air quality has not been what it used to be for many years since we brought in the dogs. We also had to update our air filter more often. He asked us about the last time we had our ductwork tested, and I told him that we usually tested the vents to see which parts needed sealing. He told us that we needed to consider duct cleaning for our air purification help to work efficiently, especially now that we had pets. We talked for a while, plus it was clear that he knew so much about A/C equipment. He told us that he once worked as an A/C professional for a home repair provider, but he was now retired. The kids meandered off to the park with the pets while we discussed heat plus a/c systems. The A/C professional told us about smart A/C, how it works and how it saves energy. With several children and many pets, we needed all the savings we could get. He also told us we could install a whole- home air purification system alongside our HVAC system. Such a system would ensure that air purification was okay, decreasing indoor comfort.