AC unit and Air Filters

[Jetsers]

We just finished our 4th trip out yesterday, 13 nights total since we got the pop up. Loving it!

We had the AC freeze up for a bit and blow some ice into the cabin. That was a first, so any tips on how to keep that from happening?

When this happened I thought I might look at the air filter for the ac, and it was super dirty. It appears to just be a bit of foam maybe 2.5 inches across and about 8 inches long.
Can I just rinse it our well and put it back up there? Or like Home AC filters do I need to replace it every so often?
Thanks for the help!

[Grumpy]

Wash it good, let it dry and reinstall. If you had ac running on low fan that can cause icing too.

[bdreinv]

Was there lots of humidity where you were at?

[Jetsers]

Oh yeah, on and off raining, 95+ out. Fun times.