Here are some common reasons why your portable air conditioner might leak:

• Improper Installation: If the unit isn't placed on a flat, level surface, water may not drain correctly and could start leaking. Ensure the air conditioner is installed on a level surface.

• Clogged Drain Line: Portable air conditioners have a drain line that can get blocked with dirt, lint, or debris, causing water to back up and leak from the unit. Cleaning the drain line can resolve this issue.

• Faulty Pump: If your portable air conditioner uses a pump to remove water, a malfunction or blockage in the pump can cause leaks. Check the pump for any obstructions or signs of malfunction.

• Dirty or Frozen Coils: Dirty or frozen evaporator coils can disrupt the unit's operation and lead to leakage. Regularly clean the coils and check for ice buildup, allowing the unit to defrost if necessary.

• Air Leakage: Improperly sealed air intake and exhaust connections can allow humid outdoor air to mix with cooled indoor air, creating excess moisture that may result in leaks. Ensure all seals and connections are securely fastened.

Addressing these issues can help prevent leaks and ensure the efficient operation of your portable air conditioner.