Why does the diagram provided look though this heats the water after it is removed from the source to be cooled dumps the hot water into a resevor?

It’s a bad diagram. These blocks work well, but check the fan rotation upon receipt. Some of mine were backwards but they can be flipped if needed. As an additional note, these can be used to heat or cool the water depending on how the thermoelectric blocks are turned. One side heats and the other cools.

Can these be reversed and used to cool the water?

It can be depending on which way the TECs are oriented. Also, would check the fan orientation when you do to maximize the thermal dissipation. Would recommend getting a temperature controller to attain the desired temperature.

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Thermoelectric Cooler 12V 4-Chip Low Noise Assembled

Product ID: 118034384

Details

Brand
TOPINCN
Compatible Devices
Radiator
Cooling Method
Air Water
Noise Level
25 db
Power Connector Type
4-Pin
Product Dimensions
2.56"W x

⚡Powerful 288W max output

🔇Ultra low noise at 25dB

❄️Cools air by 5-8°C

€ 101.30

Duties & taxes included

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Description

❄️ Stay Cool, Stay Ahead: The Future of Compact Cooling is Here!

COMPACT POWERHOUSE - Sleek 180x65x62mm design packs a punch with 288W max power, fitting seamlessly into your tech setup.
ECO FRIENDLY COOLING - No refrigerants needed, leveraging clean thermoelectric semiconductor technology for guilt-free chill.
PLUG PLAY NO HASSLE - Comes fully assembled so you can start experimenting or cooling immediately—no DIY stress.
WHISPER QUIET OPERATION - At just 25dB, it keeps your environment cool without the distracting hum—focus mode: ON.
CHILL YOUR SPACE NOT YOUR WALLET - Efficiently cools up to 20L spaces with semiconductor tech—perfect for your home office or lab nook.

The TOPINCN 12V 4-Chip TEC1-12706 Thermoelectric Cooling System is a compact, pre-assembled semiconductor cooler designed for small spaces up to 20L. It delivers efficient air cooling by lowering temperatures 5-8°C below ambient, operates quietly at 25dB, and requires no refrigerants. Powered at up to 288W, it’s ideal for experimental setups, research, or personal cooling solutions where silent, eco-friendly performance matters.

Specifications

ASIN	B07PGYWNQP
Best Sellers Rank	#1,264,620 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #270 in Lab Coolers
Brand Name	TOPINCN
Compatible Devices	Radiator
Cooling Method	Air, Water
Customer Reviews	3.6 3.6 out of 5 stars (21)
Item Dimensions L x W x H	2.56"W x 2.44"H
Item Highlight	Semiconductor cooling kit, air cooling for 20L small spaces, finished product, 4 fans, 170W refrigeration power
Item Weight	0.02 kg
Manufacturer	TOPINCN
Model	TOPINCNgwt6qpfk40
Noise Level	25 db
Number of Items	1
Part Number	TOPINCNgwt6qpfk40
Power Connector Type	4-Pin
UPC	724942571519
Unit Count	1 Count
Voltage	1 volts
Wattage	288 watts

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