what is the height of the smaller heat sink. I will be mounting this through something to keep the hot and cold sides separate through it?

The smaller heatsink is 28mm, and with the fan it’s 36mm.

Can this TEC module be used in a bipolar heating / cooling mode to maintain a stable temperature for a well insulated container?

This module is normally used for cooling. The heat generated must be removed with heatsink and a cooling fan (mounted externally on the enclosure). I think it would be technically challenging to use a single module to control both cooling and heating, I would just add a separate resistive heating element to heat up the enclosure if this is necessary.

Could you make this cool an outdoor pet house? What would be needed besides this to do that?

It could work as a heater but not as cold a/c. This peltier module has two sides, the big fan gives you 80% hot air, and the tiny side 20 and if that 20 goes into a non air sealed container you’ll waste your money.. good luck..

How many degrees does it cool below ambient temperature? It says 5 to 6ﾟ in description. Is that it?

We did an experiment. After 2.5 minutes, the temperature dropped 10F, and after 10 minutes, the temperature was 13.7F lower than surrounding temperature. With time goes by, the temperature tend to stabilize. However, it also depends on the insulation around the Peltier. I hope that answered your question.

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❄️ Chill smarter, not harder — cool tech for the modern pro.

SPACE SMART DESIGN - Compact footprint fits anywhere—ideal for desktops, pet beds, or mini wine cellars.
PLUG PLAY DIY KIT - Completely assembled with clear wiring for effortless installation.
ECO FRIENDLY COOLING - No refrigerants needed, just pure semiconductor efficiency for sustainable chill.
POWERFUL 144 W COOLING - Experience rapid temperature drops with high wattage semiconductor tech.
WHISPER QUIET OPERATION - No noise, no vibration—perfect for focused workspaces and sleek setups.

This DC 12V DIY Thermoelectric Peltier Cooling Kit features a durable aluminum build and TEC1-12706 semiconductor plates delivering up to 144W cooling power. Equipped with 2 silent fans and a compact design (20x12x9.5 cm), it cools small spaces up to 10L efficiently without noise or refrigerants. Perfect for tech enthusiasts seeking a sleek, eco-friendly cooling solution for computers, pet beds, or compact storage.

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Product Dimensions	20L x 12W x 9.5H Centimeters
Brand	Yrhrol
Power Connector Type	2-Pin
Voltage	12 Volts
Wattage	144 Watts
Cooling Method	Air
Compatible Devices	Radiator
Noise Level	30 Decibels
Material	Aluminum
Manufacturer	Yrhrol
Number of Items	1
Model number	Thermoelectric Semiconductor Radiator
Item Weight	785 g
Item model number	Thermoelectric Semiconductor Radiator
Included Components	Semiconductor Cooler Conduction Module + Radiator + Fan + TEC1-12706
Are batteries included?	No

DC 12V DIY Thermoelectric Peltier Refrigeration Cooling System Kit Semiconductor Cooler Heat Sink,2 Cooling Fans, 2 Large Fans and 2 Cold Junction modules

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