Frequently Asked Questions

Q's on the DesignLights Qualified Products List (DLC QPL)

1. Where can I see the Qualified Products List?
2. Once my product receives an incentive how can I market it to my customers?
3. What information does the DLC QPL Members see on the Qualified Products List?

Q's on the DLC QPL Process

1. How will my application be reviewed?
2. What happens after I have gone through the application and payment process?
3. If my product PASSED, how do I know which utilities will incentivize my product?
4. What is the cost to apply and is Credit Card the only form of payment you accept?

Q's on the DLC QPL Application requirements

1. Where can I find labs that test for LM-79?
2. If we conduct our own UL 1598 testing will that meet the DLC QPL requirements?
3. I know I can apply for a product but can I apply for a ‘product family’?
4. What if the lab module does not have full LM 80 results?
5. Referring to the online application form, what is the LED Package Part number?
6. How is lumen maintenance in Option 1 calculated?
7. Why is a Temperature Measurement Point needed for DLC requirement?
8. Under what version of technical requirements is my application evaluated?
9. During the manufacturing of a luminaire, can thermocouples be attached to the LED at the specified TMP, take photos of the internal attachments showing location, and run the wires out through a hole as described in Energy Star® Manufacturer’s Guide for Qualifying
Solid State Lighting Luminaires – Version 2.1?
10. How should center refrigerated case fixtures be submitted?
11. What orientation is required for reporting zonal lumen densities?
12. Under the technical requirements, is the minimum lumen capacity of 45 lm/w measured at the center or at the side?
13. How should luminaire efficacy be reported?
14. In the extreme case where the insitu temp is lower than all of the LM 80 results, what would the 3rd temperature be?
15. How do I test refrigerated case lighting?
16. How do I test power factor and total harmoic distortion (THD) when using a universal driver?
17. What occupancy sensors are acceptable for the Stairwell/Passageway Lighting category?
18. Is graduated dimming acceptable for the Stairwell/Passageway Lighting category?