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ES Recessed Downlights V1.0 Final Draft

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Update time : 2023-10-23 15:25:16

On October 19, 2023, the Environmental Protection Agency’s (EPA) released of the final draft of the ENERGY STAR Downlights Version 1.0 specification (V1.0), intended to replace the Luminaires Version 2.2 specification (V2.2; the “existing specification”) for downlights and recessed downlight retrofit kits.  Included the following products:
1.Downlights with built-in or integral LED module(s) and apertures ≤ ten (10) inches that:

o Are intended by the manufacturer to be:
§ Fully or partly recessed into the ceiling, or
§ Surface-mounted to the ceiling, or
§ Mounted to a wall lighting downward, or
o Are provided with a cord, chain, tube, etc., which permits it to be suspended from a ceiling or wall support.
2.Recessed downlight retrofit kits* with built-in or integral LED module(s) and aperture ≤ ten (10) inches.

2. Reference from EPA’s notice, the update of the ENERGY STAR Downlights Version 1.0 specification (V1.0) is below:
Scope (Section 1) 
Based on feedback received from Draft 2 and subsequent dialog with multiple stakeholders EPA has clarified that downlights with integrated light source(s) and apertures of ten inches or less that are intended to be recessed, semi-recessed, surface-ceiling mounted, wall mounted or suspended from a ceiling or wall support are eligible to earn the ENERGY STAR. Recessed downlight retrofit kits with integrated light source(s) and apertures of ten inches or less continue to be eligible for certification. 

Definitions (Section 4) 
In response to questions about the scope of this specification, EPA has updated the “aperture size,” “downlight,” “downlight retrofit” and “trim” definitions, added definitions of “aperture,” “built-in LED module,” and “integral LED module” and removed the “residential downlight” definition. Additionally, the definitions of “direct lighting,” “optics” and “MacAdam color ellipses” have been removed. New definitions of “consumer authorized third party”, “interface specification,” and “open standards” were also added consistent with current program-wide ENERGY STAR connected criteria. Finally, the “rated luminous flux maintenance” and “rated luminous flux maintenance life” definitions were renamed to be consistent with relevant methods of measurement. 

Product Families (Section 6.1) 
Based on the feedback received from Draft 2 and subsequent dialog with multiple stakeholders, EPA has clarified the light source, LED driver, input power, and diffuser variations that are allowed within a product family and added an allowable variation for exterior housing finish applicable to suspended, surface-mounted, and wall-mounted models. 

Luminous Efficacy, Output and Zonal Lumen Density (Section 8.1) 
In response to Draft 2, stakeholders requested that EPA consider a lower luminous efficacy requirement—specifically 80 lumens per watt (lm/W) instead of 90 lm/W as proposed in Draft 2. Stakeholders argued that the 90 lm/W level would increase product cost and a threshold of 80 lm/w would increase engagement and compete better against economical recessed can and low performing Aline lamp combinations. Initial EPA analysis assumed only the current ENERGY STAR integrated downlight levels as the alternative. Thanks to stakeholder-provided photometric data of various bulb configurations in recessed cans, including low performing A-lamps, we were able to assess the potential savings relative to these alternative downlight options.   
Additional Changes  

  • Removed Section 5.2 which was a holdover from Luminaires V2.2 but not relevant to this specification which requires testing of fully assembled fixtures. 
  • Clarified that reported light output divided by reported input power must comply with the luminous efficacy requirement. Additionally, adjustable accent lights must meet the zonal lumen density requirement when aimed at nadir (Section 8.1). 
  • Incorporated alternative methods of measurement and reference documents for start time, transient protection, and standby power consumption. (Section 10). 
  • Harmonized terminology to be consistent with solid state lighting industry maturation. 

Clarified that a supplemental performance summary would satisfy the labeling and packaging requirements for units of certified models not intended for stocking on retail shelves. Additionally, recommended CCT nomenclature and certification marking requirements previously marked as “optional” were removed. Finally, requirements for the use of the ENERGY STAR mark which previously appeared only in the Partner Commitments are now included. (Section 15.1).

Note: The above is from the translation of the excerpt of the EPA email notice, and the final interpretation shall be subject to the official EPA original notice.

3. Light efficiency, regional lumen, color temperature chroma requirements


4. Lumen maintenance rate and color maintenance rate requirements

5. Electrical parameter test requirements

For other details, please refer to the latest document requirements of ES, or contact us:
Contact: Daisy.Chan

Tel: 189 8891 3090