i have two of them one is a GE and the other is a GOLD STAR and the GE would take care of that size room pretty easy... the thing that makes some cost more is the amount of pints they hold, so if you have a drain they all work about the same..so i would just buy one of the cheaper ones and sit it on top of a tote from walmart and then you have a 20 gallon res.. and the GE is fairly compact and it has never given me any problems seems durable and cost was under $150 from menards.