Oddbean new post about | logout
 pro gardeners here hmmm - wish all great gardening in 2024 
 Only if hacking and technology involved :-) 
 I am trying to get a cooler with ~30 R value. Hack a window A/C unit to keep it 2C (37f) inside. all off grid powered by solar.

Currently I am in a 12 yr window for break even. 7yr if I buy a S19.