We bought a house with this air conditioner installed. It ran OK last summer. Near the end of summer, I found it leaking in the furnace room. Eventually, I found that a 'grill' in the furnace (I think it supplied air to/from the air conditioner but not 100% sure) was clogged with dust so I just removed it but had not used it since (used the furnace, not the conditioner). Today tried it and everything sounded like it was running but the house was not cooling down (after 2 to 3 hours). I walked by the unit outside and did not feel 'Hot Air' being blown out. It was not cold, more like room temperature air.
What I am wondering then is obviously why. I am no handyman but just want to know what it might be as I will probably have to call someone and just want to know what it might be? I know this sounds dumb but is there a 'gas' that is needed (like freon but I don't think that is used anymore) that has to be refilled?