I have a little problem... I've had my furnace for about 25 years now it's a Gh-80 by roberts gordon. The thing is all these years i think i have been putting in the filters wrong it says that the arrow should point in the direction of the furnace or blow motor okay but i have a system that has two filters...so do both arrows point to the furnace or just one and which one?
P.S. just in case you need more info it's a natural gas furnace and it's connected to the air conditioner (all in one unit i gueess is what you call it located in the basement)
[Edited by john merrick on 10-14-2005 at 05:35 PM]