I am skeptical that the condensation is coming FROM the A/C unit. Rather, I suspect that the condensation is forming on the underside of your roof (above the insulation) and travelling to the first available opening, which is the vent leading to your A/C.
The condensation is forming on your roof (and walls) because you're heating and breathing in an enclosed space with little or no ventillation. Why on earth is it enclosed when it's only 34 degrees?
I've had this happen to me, and seen water come in through the roof dome light. Spooky! When I removed the light I could see severe condensation, apparently from having tried to dry out wet clothes using space heaters. I now make sure I do this only in the shower stall with the vent open. Never had the problem since.
