I do not know what happened with my central heating and air conditioning system recently, but it was really strange. It was a very hot week we were having and the air conditioning suddenly stopped working! I had to call the local heat and a/c company to send out a certified heating and cooling specialist to come and repair my central HVAC system unit. They were not able to get anyone out to me until the following day. So overnight I went to stay with a friend. When i returned the next day to meet the certified heating and cooling specialist from the local heat and a/c company at my home, my central air conditioning was working! It was the most strange thing! The heating and cooling specialist did not seem surprised and did not think I was some kind of a flake thankfully. He said that this was a semi-common thing he has seen before and in fact my central heating and air conditioning system did still need to be repaired. This was something that would only last temporarily and that the air conditioning would go out once again in a matter of hours or days. He went and replaced some kind of part in the central heat and a/c unit and then told me that what he did fixed the issue and that my central heating and air conditioning system would be fine now. It was some kind of small box that went inside the central HVAC unit, do not ask me what it was.