I have a model HABA-F018SD AC unit outside. I tried to see if I could get any info on line about this unit with no luck.
It seems that when the AC unit starts up it runs for about 2 hours. Then shut down for any where between 1 to 3 hours, depending on thew outside temp. I have it set at 75 F. Is this normal?

If it is keeping the house cool then I would say yes, your home must be insulated rather well in order for it to stay off that long and maintain 75 degrees.