The answer to 'air conditioner blowing cold air' is that there are several common causes, including a refrigerant leak, a problem with the compressor, or a blocked air filter. The symptoms may include the air conditioner running constantly, the house not cooling properly, or the air coming out of the vents being very cold.
Some potential solutions include checking and replacing the air filter, inspecting the refrigerant lines for leaks, and ensuring the compressor is functioning correctly. If the issue is more complex, it's best to call in a professional HVAC technician to diagnose and repair the problem.