well i would be more inclined to answer on my thread, hint hint, but a portable Ac is just like anything else needs to be "modified" or rather polyfied to suit my needs hell if have to i would duct tape a flang on the intake side of AC for the heat coil if i had to.
my set up is 400w MH and 400w HPS in cool tubes, dont know why but the way i have it setup i get a loot of condensation and it helps with the humidity too, 6in fan blows across light since it makes a very short trip though the ducting this save me fan life. 160w Solar glo exoterra MH(cooled by a duct fan blowing across bulb just spreading heat to room) and then x2 26w reptile cfls(for up close and personal/finishing plants) this is in a 3x5x5 area(total tent/room area is 5x7x5.... 5x5 jarden sideways) then i have a 4in fan and filter hanging paralell to the cooltubes on constant scruc that leads into my DIY tent(its all inside the tent) which is 2x4x4 and has a 6bulb t5 cooled by fan/filter from by the lights in flower. an oscilating fan in ea. area hanging and an aero cloner 2 gal bucket in the 2x4x4.
i can fit 32 plants in 1gal pots in flower, no veg time, i can fit double that in veg in 4x4 pots. its just about turn around no veg time and small pot with very well aerated soil, and a drip sytem to water daily. with my cycle, doing very well i could pull tons but recently i have been having cloning problems (fucking heat problem i let it get out of control and killed a lot of babys) so i have been popping seed and flowering some big ass plants.
what does leave me with oh yeah a 3x4 space to sit which is mostly consumed by a shelf a 5gal bucket and a dehu.
i have very complicated timing schedule and my bill is about 100$ if i have everything running at full go.(12cent a kwh)
dont know its just about the turn around, when in peak condition i can clone and flower within 2 1/2 months and yeild about 2-3oz per plant.