Thank you. I was thinking from a ventilation and heat output angle, not sure how much heat this equipment throws off. Probably depends on how much usage. Anything over 1500 watts will be rare and brief for us, mostly closer to 500. Was considering a vent to the outside for fresh air in the summer, close it off in winter. 3x5 may work OK on my wee floorplan. Figured there would be fan noise, thus stashing it in it's own space.