[Max Weisel] recently created a Peltier-based cooling/heating system that fits into a backpack. The system uses two Peltier units, each running at 91.2 watts, with computer heat sinks mounted on ...

The result of his labor is the single room poor man’s A/C unit you see above. He had a spare Peltier cooler sitting around, so he put it to good use as the basis for his air conditioning unit.