Before calling an expensive service repairmen to fix your air conditioning system, try following some simple trouble-shooting techniques first. If the system is not working at all, check the fuse or circuit breaker, and also check for a defective power cord. If the unit does not cool, or is cooling inefficiently, check the filter for excess debris, and make sure the thermostat is working properly. If the system is excessively noisy, check for dirty or bent fan blades, a loose blower motor, or insufficient lubrication in the motor. For more specific information, contact your local air conditioning professional.
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