I am a low-voltage contractor, not HVAC. We are installing an equipment rack full of high-end sensitive electronics in a mechanical rm that must have a reasonable ambient temperature to function reliably. The room is about 72 sq ft with an 8' ceiling and it turns out we will be sharing it with an American Standard 2-stage gas furnace rated at up to 114,000 BTU/hr with both stages running. The furnace is rated at 95% AFUE, but that doesn't tell me how much heat it is likely to radiate into the mechanical room. Is there any way to determine this, or am I worrying about nothing? Ventilation for the room can be sized as needed.