The answer to 'air handler leaking water' is that the most common causes are a clogged drain line, a cracked drain pan, or a problem with the condensate pump. Symptoms include water dripping from the air handler, standing water around the unit, or moisture damage to the surrounding area. Solutions can range from simple DIY fixes like clearing the drain line to more complex issues that require a professional HVAC technician to diagnose and repair.
If the leak is minor and you're comfortable troubleshooting it, you can try clearing the drain line, checking the drain pan for cracks, and ensuring the condensate pump is working properly. However, if the leak is significant or you're unsure of the cause, it's best to call in a professional HVAC technician to properly diagnose and fix the problem. They have the expertise and equipment to identify the root cause and make the necessary repairs to prevent further water damage.