Just bought a new everest unit 3 t,made by goodman its 2 weeks old, now I'm getting a musky smell why, will it go away.thanks dan

It could be many things. In the trade it is called dirty sock syndrome. I would contact the professional installer and let them figure it out since they installed and started up the equipment.

Here is more info for you

Google (http://www.google.com/#hl=en&source=hp&q=dirty+sock+syndrome&aq=0&aqi=g10&aql=&oq=dirty+sock&gs_rfai=Czip2C1AdTOCpKILygwTmx-njDAAAAKoEBU_Q7YOx&fp=1fffdb96bc7d84b3)

Check this out as soon as possible. Sometimes this smell is leaking refrigerant