Hi

I have a question.. In my basement I have my gas furnace and hot water
heater... there is one window there... I currently do not have any
fresh air access... The gas company said I should have some fresh air
coming in with louver or vent.. Question:

do I need to run tubing so it sits 12 inches from the floor? Someone
said I should.

what is the simplest way to do this air louver?

wont the room get cold?
Thanks