You shouldn't have any trouble with the fabric unless it gets too much moisture and molds, but your serger and machine will definitely not do well with a Swamp cooler, just too much moisture, ask me how I know. The can rust and really mess up. I woul invest in a window refg. air. Lucky you, how large is the house you just bouight? What a fantastic idea, your own quilting craft house, not just a small room but a whole house. Have lots of fun. Just think you can decorate it completely with things you make while there. Are you going to use natural gas or propane in the deerborn? Natural gas will eventually turn blue fabric to a purple like color and purple to a blue. If you keep the fabric under cover this can still happen. Propane will make things eventually on walls, and other objects become gummy when dirt collects on the residue, but I have no idea what propane will do to fabric. I would just make sure that I had all fabric in a plastic container.