Thermoelectric Peltier Refrigeration Cooling System DIY Kit With TEC-12706 Peltier
Semiconductor coolers are a form of solid-state cooling that incorporates both semiconductor technologies and electronic assembly techniques. The thermoelectric Peltier refrigeration cooling system DIY kit is one such example.
The DIY kit is a semiconductor cooling kit that uses a TEC1-12706 Thermoelectric Cooler Peltier Module. The kit has 2 heat sinks, the bigger one is for the hotter side and the smaller one is for the cooler side. The bigger the heat sink, the greater dissipation of the heat.
The fan, also included in this kit acts as a radiator. This is attached to the bigger heat sink. The TEC1-12706 thermoelectric Peltier module is sandwiched between the two heat sinks. The module will reduce the temperature.
Note: This is an unassembled kit. 
How To Assemble The Thermoelectric Peltier Refrigeration Cooling System DIY Kit:
- First, take the large heatsink and the cotton washer (which will hold the Peltier in place), remove the cotton washer’s sticker and place it on top of the large heat sink, making sure to align it.
- Apply thermal grease or heatsink compound before installing the TEC1-12706 Peltier module (the heatsink compound/thermal grease increases the heat transfer rate).
- Then, firmly press the TEC1-12706 Peltier module against the heatsink (Remember the cold side of the Peltier module is always the surface with letterings)
- Apply the heatsink compound/thermal grease above the TEC1-12706 Peltier module and place the small heatsink on top of it and attach the screws
- Place the brushless dc fan on top of the large heat sink, align it properly, and screw it in place. Next, attach the safety grill to the brushless dc fan and then screw it in place.
Read our blog Peltier module working principle where we explained what is a Peltier Cooler, how it works, things to keep in mind while using a Peltier, and applications of Peltier.
Features:
- Cooling Technology: Utilizes a TEC1-12706 Thermoelectric Cooler (Peltier module) for efficient heat transfer.
 
- Components Included: Comes with a Peltier module, heat sinks, a cooling fan, thermal paste, and necessary screws.
 
- Operation: The Peltier module creates a temperature difference when an electric current is applied, with one side becoming hot and the other cold.
 
- Power Supply: Typically operates at 12 volts.
 
- Heat Dissipation: Includes a heat sink and fan to dissipate heat from the hot side of the Peltier module.
 
- Compact Design: Small and easy to integrate into various cooling projects.
 
- Applications: Suitable for small-scale cooling projects like cooling electronic components, small refrigerators, or custom cooling solutions for CPUs
Applications:
- Pet Air Conditioner.
- Portable refrigerators.
- Medical instruments.
- Mini Fridge
- Portable Cooler Projects
- Pet Space or Enclosure Cooling
- Electronics Component Cooling
- Medical and Laboratory Equipment Cooling
- IoT and Embedded System Thermal Management
 
				
				1. How to assemble the Thermoelectric Peltier Refrigeration Cooling System DIY Kit?
To build your thermoelectric peltier refrigeration cooling system DIY kit, begin by carefully placing the TEC-12706 module between the heat sink and the cooling plate. Spread a thin layer of thermal paste for maximum efficiency. Mount the cooling fan securely, following the instructions so it directs airflow over the hot side. Connect all wires to the power supply, double-checking polarity and connections for safety. Once complete, switch it on and feel the cold side—your assembly is ready for mini-fridge or electronics cooling experiments!
2. How to power the Peltier refrigeration cooling system kit?
Your peltier refrigeration cooling system kit works best with a stable 12V DC power supply, which you should connect as per the manual. Because the Peltier module generates heat on one side and cools the other, it’s crucial to keep the hot side cooled with a fan or heat sink for prolonged, reliable operation. Avoid over-volting the system, as this can reduce efficiency and harm the module. Make sure your supply has adequate current (4-6A or greater) to maintain strong performance in your DIY cooling applications.
3. How to test the cooling effect of a Thermoelectric Peltier Cooler?
Once your thermoelectric peltier cooler refrigeration cooling system is assembled and powered, wait a few minutes, then touch the cold plate gently. You should feel a noticeable drop in temperature! For consistent results, use an insulated enclosure—this helps maintain a steady cool inside, much like a mini refrigerator cooling system. For more accuracy, place a digital thermometer on the cold surface and log the data to measure performance. Testing in various environments helps you fine-tune your kit for food, beverage, or electronics cooling.
4. How to use this kit for small DIY refrigeration projects?
You can integrate your thermoelectric peltier refrigeration cooling system into a range of DIY builds: mini-fridges, beverage coolers, or cooling enclosures for sensitive electronics. Just mount the cold plate inside your box, keep the heat sink outside (well vented), and monitor the temperature as you experiment. Its compact size makes it perfect for tight spaces and smart home projects. For electronics, use the cold side to lower the temperature of hot components and the fan to keep everything running smoothly. It’s versatile and beginner-friendly!
5. How to ensure proper maintenance of the cooling system?
For long-term reliability with your thermoelectric peltier refrigeration cooling system DIY kit, routinely inspect the thermal paste between the module and heat sink—it should remain intact and free of dry spots. Clean dust from the fan and heat sink to keep airflow strong, and avoid letting condensation or moisture gather, as this can damage the system. Good airflow is especially important in warm climates or when the module runs for several hours. Regular care means your mini cooler will last and perform consistently.