Yes, many LED lighting products can be dimmed, but not all are designed to dim, so check the packaging to see if it says dimmable or non-dimmable. LED bulbs and fixtures must be designed to dim and may not compatible with all dimmer controls designed for incandescent lamps. It may be necessary to replace existing dimmer switches with ones that are compatible with the LED lighting product. Check the packaging or accompanying instructions to find out if the product is dimmable and which dimmer products are approved for use with the product. As the LED industry grows, fully compatible LED dimmers will become more prevalent in new construction. In the meantime, confirm with the manufacturer that their product is compatible with your dimmer.