Trying to identify a couple buttons on my A/C remote. A little tree and a house?

[CrashTestDummy]

This may be silly, but I'm trying to identify a couple buttons on our A/C remote. We just moved into a new rental and we'll be here a while. I figure I should know how to use this thing.

Any idea what the little tree (?) button and the house button do?

No luck finding a manual online for the manufacturer.

**I'm not sure this is the right place for this topic. Maybe it needs to be moved. This seemed like the closest option though...

[trogers]

The tree ? is probably for economy mode and the house with a 'x' means fresh air inlet is closed.