4 Chip Thermoelectric Cooler Peltier Module 12V Semiconductor Water Chiller Air Cooling Device for DIY Refrigeration System

Working good

works

Depending on your application, the air side dissipation can't keep up with the water side. Make sure you're aware of how Peltier devices work and the impact of thermal impedance and mass. My application was a water chiller, but effectively the thermal mass of the water was too high for the little heataink so it just turned into a space heater. It might work better as an air chiller.

This cooling system produces too much heat, and the cooling fans are very weak. 2 of the fans don't work out of the box. I replaced with stronger fans but still not sufficient. It raises the temperature of the liquid that it supposes to cool about 5F.

Needs a bigger heat sink on the cooling side also the fans don't move very much air. Good for maybe a small fridge project but that's it.

if your intention its for cooling forget about this set up, the heatsink its way to small and the fans don't do anything so the heat its way to high to the block if you buy keep on mind you will need a big heatsink like 200mmx150mmx36mm with a 120mm, 4400rpm fan blowing to the heat sink this way you will get some good cooling.