Using a dry towel under a ventilator while running an air conditioner and dehumidifier in humid weather conditions should not cause any significant problems. The primary purpose of the towel would be to catch any condensation that may form due to the cooling process. However, it's important to consider a few points:
Proper airflow: Make sure that the towel does not obstruct the airflow around the ventilator or any air intake or exhaust vents. Blocking the airflow could reduce the system's efficiency and cooling capacity.
Moisture management: While the towel can absorb some condensation, it may become saturated over time. It's important to regularly check the towel and replace it if it becomes too wet to prevent any potential water damage to the floor or surrounding areas.
Mold and mildew: In humid conditions, moisture can promote the growth of mold and mildew. Ensure that the towel is regularly cleaned and dried to prevent the accumulation of moisture and the growth of these microorganisms.
Safety precautions: Take care to position the towel securely and ensure it does not come into contact with any electrical components of the system. This will help avoid any potential safety hazards.
If you find that the use of a dry towel is not effective or practical for managing condensation, you might consider alternative options such as using a drip pan or condensate drain system provided by the air conditioner or dehumidifier. These devices are specifically designed to collect and remove condensation without the need for manual intervention.
It's always a good idea to consult the user manual or contact the manufacturer of your specific air conditioning and dehumidifier units for guidance on managing condensation and ensuring the safe and efficient operation of the equipment in humid weather conditions.