If the air central air conditioning unit for your home isn't coming on, or if it's on but you don't feel like the air that is coming out is very cold, or cold at all, call a professional. You want to get an AC repair professional to look at the internal components inside the unit, and to see if the problem is possibly stemming from the inside of the home. Here are some of the common occurrences that can cause the air conditioning unit not to work or be problematic.
A lack of power because of a blown fuse, issues with the contactor, or even damaged wiring could be the reason why your air conditioner isn't working. Although you can check the breaker box to see if the fuse if blown on your own, an HVAC professional will have to look at the contactor and wiring to see if these are a problem, and if they need to be repaired.
Thermostat and Sensor Complications
If the thermostat isn't working properly, your air conditioner isn't getting directed to kick on and push cold air throughout the house. If the sensors on the air conditioning unit aren't working, the air may not be cold coming from the air conditioning unit, or not cold enough. These items need to be checked and possibly replaced. A new efficient programmable thermostat is a better choice for your heating and cooling needs anyways.
The air conditioning unit may not be working because there is a Freon leak, and now the unit is frozen on the inside. If the fan, electrical components and all items inside of the air conditioner are frozen because of a leak, the unit has to be thawed and then the HVAC expert will have to see if they can fix the damage and problems caused by the leak.
There are a lot of different reasons why air conditioners get complications, and it's best not to try to fix them on your own, which could do more damage and end up costing you more money in the long run. Find a certified air conditioning professional that can come to your home to examine the unit, and who can restore the machine so you can get comfortable again in your living space. If the unit is damaged badly and the air conditioning expert doesn't think it can be repaired, quotes for replacement will be the next step.