Dear Linda: In searching for an answer to excessive white furniture dust I found your posting. I too have the same problem. It's driving me crazy. I had never had the problem until our old oil furnace was replaced by a gas furnace. I thought I had obtained a cleaner heating system. We also in- stalled a new whole house air cleaner and humidifer. The dust is so very thick in my bedrooms on the second floor. I've blamed the problem on everything, from the furnace, humidifier the linens, and bath towels. Have you found a cure for this problem? If so, please share it with me.