Return policy: We generally accept returns for faulty products which have failed due to manufacturing defect within 30 days only. We will also accept returns of misshipped or incorrect items. We will not accept returns due to misuse, abuse, mishandling, or using a product in a manner which it was not designed. Low resistance/high performance atomizers are only warranted for DOA failures only. However, you may want to contact us in advance and make sure this applies for the item you are interested in. Return for any reason beyond defect or incorrect merchandise will result in a 15% restocking fee.