Half the wobbling fans we see in Calamus, IA were hung from a standard light box that was never meant to take the load. AAA Electric installs ceiling fans on a fan rated box or a brace bar between the joists, wires the light and fan on separate switches where you want them, and balances the blades before we leave.
We also run new circuits for fans in rooms that never had a ceiling light, install outdoor rated fans on porches, and add remote or smart controls.