Does anyone know if this model has been discontinued? Honeywell's site has no mention of it under it's product listing. My son has allergies and I need to find replacement filters for it. Home Depot does not have it. Linens & Things where I bought it, does not have them. Nor does Target's, Bed, Bath & Beyond nor Villager's Hardware (Home Depot company). Any help would be appriciated otherwise I'll have to spend more money on a product that may be discontinued in the near future. I think this might be a marketing strategy after all.