The effort and expense were minimal: an 80's - era 5k btu window A/C that refused to die, an appliance timer that I already had, and maybe $10 extra a month in hot weather. The biggest expense would be paying myself for my efforts, but I volunteer for that job, like this one.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.