It’s A Wonder That Any Air Got Through At All

Some­thing, I’m not sure what, trig­gered my mem­ory to change the fil­ter in the cen­tral air con­di­tion­ing unit today. I remem­bered that I hadn’t changed it in a while, a long while, but couldn’t remem­ber exactly when. It was prob­a­bly more than a year ago judg­ing by how dirty that sucker was. Next month’s power bill will prob­a­bly be 20% less…