I am having problem with my bedroom staying as cool as the rest of the house. I have just moved in and I looked at the HVAC in the garage and I could not find where the filter is. The paper work that came with the system is basically the warranty and schematics. So I have one larger return, maybe 2’ x 2’ in the main living area. I opened it and there is a filter. It is brand new. I have another air intake in one of the bedrooms. I opened it and the picture attached is what is there. Is that a plug? Why is it there? Could this be causing that bedroom to not cool down?
Thanks in advance...
Also the vent above the door is above every door in the house but the bathroom. I have never seen this before either. It isn’t a register. It’s just a vent. The registers are all in the ceiling. I suppose that might be why the vents are above the door?? Help circulate the air? Because the intakes I have in The house have filters am I to assume there are no filters at the main unit in the garage?