Is your HVAC system not working?
If your AC unit is not working properly then you might need some HVAC repair work performed to fix the problem. There is no need to stress if this indeed is the problem, just keep calm and pull out the laptop and start doing some research. You first want to try and find the best heating and cooling companies around your area. The closer that they are located to you the quicker they can possibly get to you. Once you have found a couple of companies that are located nearby then start comparing samples of their work. Be sure to read the reviews as well.
After a complete and thorough research of all the companies you feel are the best fit all you need to do is make a decision on which one to call first. My personal advice is to call all of them and compare their prices to help and make your decision easier.