Wish we could come and help you....We've had problems with a rental too, but it wasn't next door! What a great deal for you. Maybe you can do one or two rooms at a time. As for worrying about the air conditioning and the heater, I don't think it's a serious problem. My grandmothers both made quilts and some survived (though unfortunately I don't have any!) Both lived in sultry, humid, sometimes cold East Texas...and survived with space heaters and big fans...