I found a couple of Dc air conditioners, 6000 BTU for the bedroom for local cooling
of the bed
. Lagoon 400
They seems to pull quite a bit less amp/hours compared to AC versions of 6,000 BTU.
I know I'd need some 4 gauge wire for about 20 ft. (tinned) which is about another $90 bucks.
DC: 6,000 BTU 12.8 volts = 30 amps DC on high. x 8 hours = 240Ah over night.
AC: 6,000 BTU 230v AC (website says only 982 watts, I did conversions). Running amps 2.8 / 982 watts. Convert to 12v Ahr at .85% inverter
efficiency = 96 amps x 8 hours = 770 Ahr over night.
AC: 6,000 BTU at 230v AC. Running 3.4 amps and using 90% inverter
efficiency is 81 amps/hr and at 8 hours of sleep = 651 amp/hours.