|The old filter (right) and its replacement.|
After the usual pleasantries and catching up, I offered to change the furnace filter, which task involves climbing a ladder. Perhaps there's an engineering advantage to placing the intake on the ceiling of the second floor, but IMHO this HVAC system was poorly designed for humans.
The filter had turned black, the residue of two summers of wildfires. Our friend texted back later tonight and said the air was much "fresher."
Perhaps her feelings were colored by the above picture, but if the good feeling raises another person's opinion of me, I'm not going to argue.