Both my fan are working good either high or low. The A/C work ice and cold for sure, and the only time that the temp will goes between middle to almost L is when the temp outside is hot and humite with A/C on driving in the city. If I drive on the highway ever day they my temp will run in the middle or little bit over during the hot and humite day with A/C on, unforturnelly that my new job just only less then 10 minutes from the house. however today on the way home from work I had A/C on and don't have any problem at all. other then that spring, fall, and winter, I have no problem.