The answer to 'why is my humidifier not cooling' is that the humidifier may not be functioning properly or may need maintenance. Common causes include a clogged or dirty filter, low water levels, or a malfunctioning fan or compressor.
Symptoms of a humidifier not cooling can include reduced airflow, warm or room-temperature air output, and higher than expected humidity levels in the home. To troubleshoot, check the humidifier's filter and water levels, and ensure the fan and compressor are working as intended. If the issue persists, it's best to call a professional HVAC technician to diagnose and repair the problem.