Much to my surprise, the air filter was almost pristine, as well as must have been upgraded just before we arrived.
Since we were renting the lakeside house for an entire week, we did a lot of research on it. Of course we studied the website as well as the pictures, but we also drove up there to see it in person! It’s a three hour drive from home, but in this case we felt it was worth the extra time, everything we saw as well as study about the house made it seem perfect… but there was a single major issue that was invisible, as well as we didn’t realize it until it was too late. Although the central Heating as well as A/C system seemed to labor perfectly, the air quality was dismal, as well as we could not figure out why! The first night we tried our best to soldier through it, but the air quality instantaneously took a toll on my wifey, and she was sneezing as well as coughing, so the first thing I did was to check the air filter. Much to my surprise, the air filter was almost pristine, as well as must have been upgraded just before we arrived. So if it wasn’t the air filter then what was causing such an issue with the air in the house? Finally I decided to get out my tool box as well as remove a single of the grates from the outside of an air vent. Inside the HVAC duct was completely coated with years worth of dust as well as dander. Although the air filter had been changed recently, it seemed that no a single had ever cleaned out the HVAC ducts since the house was first built. There might have even been some small critters residing in the HVAC duct.