1. Checking the power of your unit
Before calling professional for repairing your air conditioner makes sure that your air conditioner is getting the power from the circuit. There is chance that your air conditioner might have got unplugged accidently your circuit breaker might have tripped.
2. Check the filters
Keeping your air filters free from dirt and dust maintains proper air flow in the system. Changing the air filters regularly will avoid many problems in the system and results in less amount of repairing work.
3. Checking for ice
Check to see if there is presence of ice on the coils, pipe or the cooling unit. The presence of ice on the coil means restricted air flow. Check the outside unit of your air conditioning system it might have been covered by leaves or dirt clean the outside unit and change the air filters.
4. Programmable thermostat
A programmable thermostat not only helps in increasing the energy efficiency of your system but also protects the unit from ice or water build up which reduces the chances of blocked air flow.