re: Houston area A/C repair recs needed. Not sure what's going on.

I had this issue with my old air conditioner. The compressor ( outside unit) was old and they ac guy told me that it draws more load as it gets older and therefore will eventually trip the breaker. He replaced the contacts and something else and it lasted a few more months. It eventually broke and I had to replace it.
Not sure how old your ac unit is though.