Those are two separate questions. 1) EnergyPlus is usable for such a project. 2) We cannot really tell you if that's what you should use.Read the GettingStarted document from EnergyPlus. There are also several videos available.
On 21.01.2012 20:21, beslitl wrote:
I am a beginer of EnergyPlus and wondering if I can use EnergyPlus for a single family detached house without having much problems. crawl space, wooden frame structure, huge infiltration, individual A/C heat pump units, non-US weather condition these are features I am thinking to deal with for retrofit projects.