HVAC repair can be a expensive thing to pay for.
I have no experience when it comes to diagnosing and repairing an air conditioning unit or furnace.
If I had any issues with my HVAC equipment at my home, I would first have to turn to Google to find some answers and hopefully succeed in self servicing and repair. The first thing I would try is to check the breaker because it could have tripped off. I would be so embarrassed if I called a HVAC technician to come out for a repair and the problem was only a breaker! The second thing I would do is check the batteries in the thermostat. Something as simple as dead batteries could cause the unit to not work correctly. Another thing to try to do is self-repair your air conditioning unit is to check your filter. If your filter is clogged up with dirt and dust, it will affect the air flow and possibly ice up the unit. Every so often, the unit itself just may need to be cleaned. You could also climb up into the air ducts if you’re comfortable doing so and checking to see if you feel air coming out of them. They could be dirty enough to be blocking air flow and, in this case, would need to be cleaned. These are some things to try yourself before calling in a professional service company. Of course, sometimes dealing with air conditioner repair can only be done by a technician.