Peltier Air Dehumidifier

This is a custom-built air dehumidifier using a Peltier module. I designed and 3D-printed the enclosure to allow proper airflow via ventilation holes and a small cooling fan. Inside, a Peltier element is paired with a heatsink and active cooling to condense moisture from the air, helping reduce humidity in small indoor spaces.

It’s compact, quiet, and ideal for closets, pantries, or bathrooms.

How it works:

The Peltier module operates based on the Peltier effect — when powered, one side becomes hot and the other cold. The cold side cools a heatsink, which causes moisture from the air to condense on its surface. The water drips down into a tray or tank. The hot side dissipates heat with the help of a fan-cooled heatsink