8-9AM Arrival; Comfort Club 1C- Maintenance. There is a polarized filter mentioned in last maintenance, but I do not know what size. Customer inquired about partner plans, and ultimately decided against it. They are curious about warranty info. I told them I don't have access to it, and that you might, but if you did not it would just be a simple message to Joe and that we would get them an answer. **FOUND A NOTE: FROM 9/19/23 "Concluded to hold off on heating maintenance but is looking for upgrade after they are done paying for their child’s college tuition; in about a year." maybe worth bringing up?