For Unfinished actions/situation
Which started in the past and continue now.

Ex: I've made the beds
Ex: How long have you lived here?
Ex: I've done the laundry.
Ex: I've repaired the furnace twice.

 

Past experiences
Use when you don't say, ask, or know when.

Ex: I have vacuumed the living room.
Ex: How you ironed your shirt?
Ex: we've never used fabric softener.