Homemade AC Air Cooling unit produces very cold air. 42F air (in an 80F room). Yes, you heard it right. This man has built an air conditioner which doesn’t need electricity or even maintenance to work, make a non-compressor based “5 gallon bucket” air conditioner.
Simple DIY. items needed: bucket, styrofoam liner, pvc pipe, small fan, and ice. (small solar panel is optional). one frozen gallon jug of water lasted 6 hours. temperature in house was 84F. cooled air was in the mid. 40F range and BOOM.