I'm working with a 5A Peltier module and have attached fans on both sides. The hot side is effectively removing heat, but I'm facing issues with the cold side. I've insulated it in a plastic container to prevent any outside air or moisture from interfering. However, the cold side isn't cooling the air inside as I expected. I initially used a cardboard box, but that let moisture in and caused condensation on the heatsink. What can I do to make the cold side work better?
2 Answers
How big is your container? The size can really impact cooling efficiency. Also, make sure to check how much current your Peltier is actually drawing for optimal performance. A few pictures might help diagnose the issue better!
You might want to consider adding some heat sinks with fins on both sides to improve the heat transfer. Having fans blowing air through those fins can really help enhance cooling efficiency. Heat dissipation is key here!

Both sides already have fins. So if that's not the issue, what else could be going wrong?