What are DEWALT's customer service hours? Support February 14, 2023 14:39 Updated Follow DEWALT's customer service hours are:Mon- Sat8 AM - 9 PM EST You can reach us at:1-800-4-DEWALT(800-433-9258) Related articles I would like to contact DEWALT customer service Where can my product be repaired under warranty? What is the warranty for my DEWALT tool? What is the process for sending an invention or idea to someone for consideration? What is the warranty on my battery? Comments 0 comments Please sign in to leave a comment.