[header] How to stack a washer and dryer [title] Choose compatible appliances. [step] Theoretically, you could stack any dryer on top of a washer, as long as it fits. However, you could void the warranties on both appliances by doing this. 
Instead, look for washers and dryers that are designed to be stacked together. [substeps] Usually, this means having a washer and dryer of the same brand.