The answer to 'installation not cooling' is that there are several common causes for an HVAC system that is not properly cooling a home. This could be due to issues with the refrigerant levels, problems with the compressor or condenser unit, blocked airflow, or thermostat malfunctions. Symptoms may include the system running constantly without cooling, warm air blowing from the vents, or the compressor not turning on at all.
In many cases, these issues can be resolved through basic troubleshooting and maintenance, such as checking the air filters, clearing debris around the outdoor unit, or adjusting the thermostat settings. However, more complex problems like refrigerant leaks or compressor failures will likely require the expertise of a professional HVAC technician to properly diagnose and repair.