Do You Know The Last Time You Changed Your AC or Furnace Filter?

Yes I write the date on mine.

My husband changes them the 1st day of spring, summer, fall and winter. We bought a whole box full of filters because we have 2 furnace and AC units. Im going to have to remind him to change the filter tonite because its the 1st day of fall.

yes I do know, it was when we bought the house back in ‘73

Yes, I don't have AC or an air-heating furnace to filter. I have four hydronic boilers, including one fired entirely by wood.

Sure do. The one on my motor home AC as well.

Every 3 months on the dot.......they're cheap. Too bad the water filters for the fridge aren't.

Yes, I keep a log on my computer

Yes, just the other day, in preparation for having the heat pump on for the winter.