again it also depends on the outside temperature ..
during winter=AC's running in heat mode during dark time=no dehumidification from the AC= need bigger dehumidifier
during summer=AC's running in cold mode even during night time=AC dehumidify the room=less need of dehumidification
and dehumidifiers ratings are subjective, because they say 40liters per day for exemple .. but thats for 30 degree 100% humidity
your room will need to stay in the 50% at 25 degree .. meaning the same dehu will only pull like 20 liters per day maximum ...
the best price/quality values are these:
Le TTK 140 S est un robuste déshumidificateur à carter acier doté d'un hygrostat. Fabriqué en UE, il a une capacité d'extraction max. de 40 l/24 h et convient pour la déshumidification de locaux ou le séchage des murs après un dégât des eaux.
fr.trotec.com
not sure they sell in us
this one is rated 40liters/day .. and i know its just enough for 2400w sealed
(running non stop, lol)
for your setup (4000w) 2 would be perfect