[cleanHands]

I just had a goodman furnace installed, but I think the installers are trying to pull one over on me. First there is no return installed, the fan is exposed on both sides and they just installed a vent in the closet wall where the unit is being stored, does this seem correct, because I refuse to pay until it is inspected but I am curious because every thing I have looked at this install seems incorrect.

[ma0641]

Did the original install have return ducts? Where is the filter? In slab houses with an install like you described it is.common to have a single return. However, if you originally had a ducted return system there is no reason to not have the new unit connected like the old.one .

[cleanHands]

It's new constructon, that's the problem, there is no filter, the put the filter on the wall of the closet where the furnace is located, I don't see how that's filtering the system and according to goodman if there is no filter then the warranty is voided, I think these guys who did the install don't know what they are doing, they were hired by the builder

[ma0641]

There obviously has to be some flow through the filter or why put it on the wall? Sure there is not a return grill somewhere? Post a picture.