This past winter my Accord's heat went out just as the weather started warming up, so with Fall coming up (yes I didn't bother looking at this all summer haha) I wanted to get the heat working again. The A/C is working but not very cold even after I charged it, I figured maybe something else in the A/C system was faulty. So I could get either remotely cool air or whatever the outside temp was. Before this, the heat was stuck on and could not get any cool air or outside air at all.
So at the advice of Jon (kn0x47) and a thread I saw recently here, I started playing with the blend door actuator. Turns out it had been malfunctioning which explains why my heat was stuck on and then stuck off, as well as why my A/C wasn't very cold. Then it finally died with the blend door blocking the heat off. I reached up there and found that if I manually move the blend door one way (toward passenger side) my A/C was much colder, and if I moved it the other way (toward driver side) my heat would work.
It looks like the part number for the blend door actuator is 79140-S84-A01, but I came across another number which is 79160-S84-A01. I believe it's the 79140 but need to look further into it. Anyway there are big price differences between these, some seem to come complete and others I'd have to swap parts.
Anyway just posting about this because I was so relieved it's easily fixable, and that I could still get cold A/C and hot heat in this 22 year old car! haha