HiLetgo 2pcs TEC1-12706 Semiconductor Refrigeration Tablets TEC1-12706 12V 6A Heatsink Thermoelectric Cooler Cooling Peltier Plate Module 40x40MM

I used this to replace the faulty unit on our wine chiller. With just some minor work, the chiller was chilling again.

Great replacement part for repairing your mini fridge. It was affordable and functional

I bought a heat sink off of Amazon that said it was for this unit as it matched the 40mmx40mm footprint and had numerous fins (but no fan). However, within about 20 seconds of hooking the Peltier unit to a 12V, 5A power supply, both sides of the Peltier were hot: the "cool" side about 10 degrees F above ambient and I almost burned my hand on the heat sink on the hot side.I found a 10W power supply (12V, 0.85A) and it worked pretty well for my application: it cooled the cool side about 10-15 degrees F below ambient and the passive heat sink mentioned above with a 5V computer case fan managed to keep it at that temp until the ambient got above approximately 105F...then it can't quite move the heat off the hot side fast enough.One thing to correct from other reviews: these Peltiers will *not* work with any voltage below 12V. You can control the amount of cooling they provide on the cool side (and thus the heat they generate on the hot side) by limiting the current (i.e. the number of amps) to the Peltier. If you do more than 10W of power to the Peltier, I'd recommend a computer CPU heat sink with a fan that can provide at least 90W of cooling.

I bought these to replace a dead unit on my wood stover fan. It kicks on at a low temperature and spins just as fast as the old unit.

Had an issue with my old water cooler not functioning. These both worked as a drop in replacement. And I have a spare if the replacement manages to burn out in the future. Have it setup to cool a water dispenser to about 45-50f and it can maintain it easily after an hour or two of run time.

These are not 12706 Peltier modules. simply a lie these are the lower power version. Also one came with a decent sized crack on the edge.

They still work even tho I've had them in storage a while I tested them recently and they do produce the temperature as you would hope. I have not used high voltage like described but only a max 9v and they immediately go to work. About 3 secs and maintain.One side goes hot and one cold and if u reverse the wires like I've done so the sides that produce the temperature swap so no damage I hope... the temperature is pretty warm maybe 70° and the cold is chill drops to 45° maybe I haven't been sure need to measure but I've held them in my hand.Good stuff lots of possibilities here with these I need more later.

Years ago these little thermoelectric doohickies were quite a bit of money, but for the price of the HiLetGo's I thought I'd try them for my old Ecofan. Only issue I had was that the 40mm size was a smidge too large and I had to remove some side wings on the unit and also use smaller diameter screws to hold the top assembly to the base. I smoodged a fair bit of thermal paste on both sides and got it assembled and it works which is the main thing. If and when this one dies, I'll look for a slightly smaller unit like the oem. But for now I'm a happy camper.