LED Ratings and Listings Explained

LED listings and ratings tell you whether an LED light, fixture, or retrofit is safe to install, durable in your environment, efficient to operate, and acceptable to inspectors.

In one glance you might see safety listings (UL/ETL/CSA for Dry, Damp, Wet), ingress ratings (IP for dust/water and IK for impact), performance programs (DLC and ENERGY STAR), longevity metrics (L70 based on LM-80/TM-21), specialty marks (NSF for food zones, hazardous location Class/Division, and outdoor BUG/IDA), plus EU/UK A–G energy labels.

Labels also carry practical buying metrics: lumens (light output), candela/beam intensity (throw), CCT in kelvin (≈1500–9000 K), CRI (0–100; 90+ is excellent), lifetime claims (15k/25k/50k–100k hours), and, on EU labels, kWh/1000h.

You may have encountered different ratings and listings for LED lighting, and this article will help you and your business to make sense of these unfamiliar terms.

What are LED listings and ratings?

LED listings and ratings are formalized marks and metrics that define safety, environmental protection, performance, longevity, and application fit for LED products.

• Safety listings—UL Listed/Certified, ETL Listed (Intertek), or CSA Certified—confirm compliance to standards and assign a location class (Dry/Damp/Wet).
• Environmental ingress ratings include IP (solids 0–6, liquids 0–9/9K; “X” = not tested) and IK (impact).
• Performance and efficiency programs include DLC (commercial luminaires/retrofits) and ENERGY STAR (primarily residential). Longevity is communicated through L70 life, extrapolated via TM-21 from LM-80 LED data.
• Application-specific marks cover NSF for food zones, hazardous location classifications (C1D1/C1D2), and outdoor photometric stewardship via IDA approval and IES BUG.
• Photometric quantities differ: ANSI candela testing for directional products is taken at 100 ft and reflects optics, while lumen ratings come from integrating-sphere total flux.

What do the LED listings and ratings indicate?

LED markings fall into four main categories: safety and location certifications, environmental protection ratings, performance and efficiency programs, and specialty designations.

Each category answers a different set of questions you need to ask before installing a product — from whether it’s safe for a wet location to how long it will maintain its rated light output.

 1. Safety & Location:

• UL / ETL / CSA — Confirms NRTL certification of the complete luminaire; assigns Dry, Damp, or Wet location rating
• IP rating — Two-digit code: first digit = solid particle resistance (0–6), second = liquid ingress resistance (0–9K); “X” means not tested
• IK rating — Impact resistance rating, separate from IP

2. Performance & Efficiency:

• DLC Standard — Requires dimmability; applies to luminaires and retrofit kits
• DLC Premium — Higher efficacy (typically ≥+15 lm/W above Standard) and an integral controls pathway
• ENERGY STAR — Efficiency label for lamps and fixtures (US)
• EU/UK Energy Label — A–G scale showing consumption in kWh/1000h

3. Longevity:

• L70/B50 (TM-21) — Lumen maintenance projection extrapolated from LM-80 data; indicates when output drops to 70%, not catastrophic failure or driver lifespan

4. Specialty Ratings:

• NSF — Cleanability and shatter protection for food-service environments
• C1D1 / C1D2 — Hazardous location suitability, including gas group and T-code classifications
• BUG / IDA — Outdoor optics ratings limiting glare, light trespass, and upward light pollution

DLC Standard and Premium Ratings

The Design Lights Consortium sets category-specific thresholds for efficacy, quality, and controllability to support utility programs.

Many commercial LED products have been certified by the Design Lights Consortium, a non-profit dedicated to optimizing lighting while reducing impact on people and the environment. The DLC only focuses on commercial LED lighting products and offers standard quality ratings and premium quality ratings.

All DLC ratings include a minimum light output (in lumens), which varies depending on the product. Premium-rated products must put out at least 15 lumens over the standard products.

All products must also pass an efficacy requirement (lumens achieved per Watt), which varies per product. Premium ratings require at least 15 lumens per Watt more than the standard rating.

Regardless of rating, all DLC-approved products must be capable of dimming. Premium products must have the option for integral controls, making them ideal for large businesses such as warehouses. Only retrofit kits and luminaries can receive premium DLC ratings.

How to confirm if a product is on the DLC Qualified Products List (QPL)?

Match the exact model/SKU on the spec sheet to the QPL entry. Review family grouping notes to see which optics, CCTs, and drivers are included. Confirm dimming interface and any integral controls options. Check the listing status date and any pending revisions so your rebate paperwork aligns with the current qualification.

When would DLC Premium be preferable to DLC Standard?

Choose Premium when your utility incentives are tiered by efficacy or when your internal energy-intensity targets and control strategies justify the incremental cost. Warehouses, distribution centers, and parking areas that benefit from integral occupancy/daylight controls and higher efficacy usually see faster payback with Premium.

Energy Star Ratings

Energy Star ratings are familiar, and though they’re typically used for residential lighting, a few commercial LED products can also receive these ratings for energy efficiency. These include accent lights and recessed downlights. Commercial LED products with an Energy Star rating have been tested for

Commercial buildings, however, can receive Energy Star ratings for being efficient without sacrificing quality, and LED lighting can help you, as a business owner, to achieve this. The EPA sets these standards, and certification happens once per year. Energy Star scores range from 1-100, with 75 or above meaning that a building is top of the line regarding energy efficiency.

L70 Ratings

The L70 rating for an LED can help you determine how often you should change your lighting in your facility. This, in turn, can help you calculate your long-term cost of upgrading to LEDs.

The L70 rating will tell you how long you should expect an LED light to “live” before the lumens it gives off drop to 70% of its full potential. This is considered the length of its useful life. This rating is typically measured in hours.

Common claims are 15,000; 25,000; 50,000–100,000 hours. These claims are not guesses—they’re TM-21 extrapolations from long-term LM-80 testing of LED packages/modules, adjusted for drive current and temperature.

IP Ratings

IP Ratings, or Ingress Protection Ratings, can tell you how well your LED lighting will stand up against hazards such as water and dust.

This rating can help you choose lighting based on the conditions inside your facility and can help you cut down maintenance costs in the long run. Buildings with more dust and moisture will benefit from LEDs with a higher IP rating.

IP ratings range from IP40 (lights designed to go inside fully enclosed and protected fixtures) to IP67, which offers complete protection against water and dust. These lights can be up to a full meter underwater without suffering any damage.

What does “IP” stand for?

IP means Ingress Protection. The first digit rates protection from solids on a 0–6 ladder (6 = dust-tight). The second digit rates liquids on a 0–9 (or 9K) ladder (9K = high-pressure, high-temperature jets). If only water was tested, you might see IPX5; if only dust was tested, IP5X.

What is the difference between IP65, IP67, and IP68?

IP65 is dust-tight and resists water jets from any direction—great for splash and cleaning, but not for submersion.

IP67 is dust-tight and tolerates temporary immersion—often cited around 1 m for roughly 10 minutes (always confirm the manufacturer’s declaration).

IP68 is dust-tight and suitable for continuous submersion; the maker must state the maximum depth and duration (e.g., up to 3 m). For strips and sealed luminaires, cable glands, connectors, and terminations must match the claimed IP or the assembly won’t meet the rating in the field.

Which IP rating do typical environments require?

You can map spaces to IP expectations by actual exposure.

Offices and retail often sit at IP20–40.

Where dust is a problem, consider IP40–54. In kitchens, IP44 fits general splash, while cook and cleanup lines benefit from IP65.

Sheltered façades and canopies commonly use IP65; exposed sites may require IP65–66.

Car washes and pressure-cleaned bays need IP66/69K.

Pools and fountains call for IP68 with declared submersion limits, alongside a Wet safety rating.

Bathrooms vary by zone; near splash areas, IP44+ is prudent.

Quick Reference Table

Code	Meaning	Typical Use
IP20	Finger-safe; no water protection	Dry interiors
IP40	Insect/dust resistant; no water	Retail/indoor decorative
IP42	Drip-proof	Sheltered/bathroom zones
IP44	Splash-proof	Bathrooms, under eaves
IP54	Dust-protected, splash-proof	Damp interiors/outdoor general
IP64	Dust-tight, splash-proof	Dusty interiors
IP65	Dust-tight, low-pressure jets	Façades, kitchens, site
IP66	Dust-tight, high-pressure jets	Car wash/exposed sites
IP67	Dust-tight, temporary immersion	Flood-prone areas
IP68	Dust-tight, continuous immersion*	Pools/fountains (*per declared depth/time)
IP69K	High-pressure/high-temp washdown	Food/transport washdown

How can IP ratings be applied to interior, bathroom, and outdoor lighting choices?

Use IP44+ inside bathroom splash zones and IP65 where direct spray is expected. Don’t rely on IP alone in showers—pair it with a Wet safety listing. For exterior canopies and fully exposed sites, specify Wet + IP65–66; under deep eaves, Damp + IP44–54 is often enough. Transitional spaces still need the right pairing; “waterproof” does not mean submersible—IP68 is for immersion with manufacturer-stated limits.

Does a higher IP rating always mean better?

Not always. Higher IP typically adds sealing, which can increase weight, cost, and thermal resistance. Over-sealing can trap heat and reduce LED lifetime. Choose the rating that is fit for purpose rather than chasing the highest number.

C1D1 and CID2 Ratings

Safety is always a concern in every facility, and you are likely familiar with CID1 and CID2 ratings, which indicate the presence where flammable gases could (or are) present.

LED lighting products with these ratings mean that they’re safe to use in these locations. A CID1 rating means that an LED can be used in CID1 locations (where flammable gases may be present) and a CID2 rating means that an LED can be safely used in a CID2 location (where such vapors are known to be present.)

NSF Ratings

NSF/ANSI standards define construction and cleanability requirements for luminaires used in food processing and preparation. It’s essential for lighting to prevent bacteria buildup and enhance the safety of both the food and the employees, and NSF-rated lighting must be shatterproof to avoid any broken glass in food.

These lights are certified by the National Sanitation Foundation and are a requirement where LED lighting is used to aid in food preparation.

Pair NSF with the right ingress protection—IP66–IP69K—when routine washdown and hot cleaners are used. In HACCP/GMP environments, your inspection file should include the NSF listing, cleaning protocol compatibility, and materials data for seals and lenses.

Where are NSF-listed luminaires required vs. recommended?

Direct food zones and splash areas in processing lines typically require NSF suitability; prep rooms and washdown bays often require or strongly recommend it. Inspectors may request proof of listing, cleaning/chemical compatibility statements, and confirmation that accessories (guards, diffusers) maintain the certified configuration.

IDA and BUG Ratings

Reducing light pollution is a vital role for every business owner to play. A BUG (Backlight, Uplight, and Glare) rating can help your business choose lighting to minimize light pollution that can be hazardous to people and wildlife.

The IDA (International Dark Sky Association) helped to develop the BUG rating, which tells how much extra light escapes from a fixture during nighttime hours. The scale for lighting zones ranges from LZ0 (no light) to LZ4 (very high lighting). This means that in an LZ0 zone, only lights with very low BUG ratings can be used, and in LZ4 zones, higher ratings can be tolerated.

How to select optics, control glare and skyglow?

Pick full cut-off optics with U0/U1, add visors or shields where needed, choose a suitable CCT, and aim carefully to keep light on target. Reference local LZ limits and the project photometric plan to confirm BUG and trespass compliance.

If you are ready to take your company’s cost savings to the next level, contact us at Relumination today to get started.

How to choose the right combination of listings and ratings for your project?

Start with the environment, then move to safety, ingress, performance, and specialty layers.

Identify whether the area is interior dry, damp (condensation/splash), or wet (direct spray). Consider dust load, bathroom/outdoor zones, and exposure under eaves versus fully exposed.

Match a UL/ETL/CSA location class—Dry, Damp, Wet—to the real exposure; Wet sub-marks may restrict mounting (e.g., covered-ceiling-only).

Choose IP to fit cleaning and weather: offices IP20–40; kitchens IP44–65; façades/canopies IP65; car washes IP66/69K; pools/fountains IP68 per declared depth/time.

For performance and incentives, use DLC Standard/Premium on commercial luminaires; for residential lamps/downlights, look for ENERGY STAR. Layer specialty needs: NSF for food zones, hazardous ratings for classified areas, BUG/IDA optics to meet LZ0–LZ4, and IK where impacts are likely.

Confirm dimmability (DLC requires it) and whether integral controls are available for Premium or networked controls.

Finally, check ambient temperature range, chemical compatibility, pressure-wash tolerance, mounting height/aiming, occupancy/daylight controls, and local code or inspection dossier requirements.

Minimum viable marks – common scenarios

Scenario	Minimum set
Office troffer (indoor)	UL/ETL Dry, IP20–40, DLC Standard; optional ENERGY STAR (lamps). CRI ≥80.
Commercial kitchen line	UL/ETL Wet, IP65+, NSF zone as applicable; consider IK.
Car wash bay	UL/ETL Wet (jet exposure), IP66/69K, corrosion-resistant hardware; DLC Std/Premium.
Parking lot pole	UL/ETL Wet, IP65+, DLC (area/roadway), BUG per ordinance (e.g., B2-U0-G1).
Freezer	UL/ETL Wet, cold-ambient rating, IP65+, DLC where applicable.
Hazardous C1D2 warehouse	Hazardous listing C1D2, UL/ETL Wet if exposed, IP66+, T-code; DLC if eligible.

What quality certifications should you look for on spec sheets?

Spec sheet certifications tell you whether a product has been independently tested, not just self-declared. For US projects, the priority is confirming the right NRTL mark, then layering in performance and application-specific certifications as the project requires.

Safety Certifications (NRTL)

• UL Listed / ETL Listed / CSA Certified — All three are functionally equivalent when tied to the same UL/CSA standards; any is acceptable to most US AHJs
• Confirm the control number and file — Always match the listed model number, optics, CCT, and driver configuration to what’s being installed
• Verify in the public directory — UL Product iQ, Intertek ETL Directory, or CSA Group Certification Records

Performance Programs

• DLC Standard — Requires dimmability; applies to luminaires and retrofit kits only
• DLC Premium — Raises efficacy (≥+15 lm/W above Standard category threshold) and requires an integral controls option; verify on the DLC QPL
• ENERGY STAR — Primarily covers residential lamps and fixtures; select commercial downlights may qualify; verify on the ENERGY STAR Product Finder

Specialty Certifications

• NSF — Confirms shatter protection and cleanable construction for designated food-service zones
• BUG weights / IDA Approved — Check the photometric package for outdoor glare, trespass, and uplight compliance

Verification Checklist

• DLC QPL — Confirm exact model, optics, CCT, and driver are listed
• ENERGY STAR Product Finder — Match product category and configuration
• UL Product iQ / ETL Directory / CSA Records — Cross-check control number against shipped model

What are common mistakes and misconceptions related to LED listings and ratings?

Mistakes typically fall into a few patterns: confusing one rating for another, misreading what a number actually measures, and assuming a product family approval covers every variant. Understanding what each mark does — and doesn’t — guarantee is the key to avoiding costly installation errors.

Mixing Up Ratings

• IP ≠ Safety location listing — You need both; IP covers environmental ingress, not electrical safety certification
• “Waterproof” ≠ Wet rated or submersible — IP68 only applies at the specific depth and duration the manufacturer tested
• DLC / ENERGY STAR aren’t universal — Eligibility and requirements vary by product category and market; verify both

Misreading Performance Numbers

• Lumens ≠ throw — Total lumens describe overall output; candela at 100 ft (ANSI) measures beam intensity
• Higher CCT ≠ brighter — Color temperature and light output are independent
• EU A–G labels were rescaled — A D rating (≈135–160 lm/W) can still represent a highly efficient product under the new scale

Overlooking Critical Specs

• Ambient temperature limits — Hot ceilings and sealed enclosures can undermine L70 claims even on a well-rated fixture
• CRI is often skipped — Always check for task lighting or color-critical applications
• IK rating is separate from IP — Don’t assume impact resistance is covered by an IP rating alone

Assuming Family Approvals Cover Everything

• Model number specificity matters — Product family listings frequently exclude specific optics, drivers, or configurations; always verify the exact model number

How do regional compliance marks differ and how should you interpret them?

For US-based projects, the core distinction is between domestic NRTL certifications and the self-declaration models common in export markets. If you’re sourcing internationally or specifying products for multi-region installations, understanding how marks differ — and what documentation to collect — prevents costly delays at inspection or customs.

North America (Primary)

• UL / ETL / CSA — Third-party NRTL certifications; required by most US/Canadian AHJs for luminaires and electrical products
• Mark scope matters — Confirm the listed model number, configuration, and voltage match exactly; family listings often exclude specific variants

Export & International Marks (For Reference)

• CE (EU) — Can be a manufacturer self-declaration; does not carry the same third-party weight as a UL/ETL listing
• UKCA (UK) — Post-Brexit equivalent of CE; same self-declaration model applies
• ENEC — EU third-party conformity mark; closer in rigor to NRTL certification
• EU/UK A–G Energy Label — Scale was rescaled upward; a D rating (≈135–160 lm/W) is still strong real-world performance despite sounding middling; A requires ≥210 lm/W, which few current products reach

Pre-Purchase Compliance Checklist

• Region & AHJ — Confirm which NRTL mark your authority having jurisdiction accepts
• Grid voltage & frequency — US standard is 120V/277V at 60 Hz; verify driver input range for imported fixtures
• Exact model number — Match certified configuration to what’s being shipped and installed
• Documentation package — Collect certification reports, photometric files, and cut sheets before submittal to keep reviews efficient and defensible

Conclusion

LED listings and ratings can look overwhelming at first, but they follow a clear logic: safety first, then environment, then performance, then application.

Once you know what each mark covers — and what it doesn’t — you can specify with confidence, avoid inspection surprises, and make lighting decisions that hold up over the long term.

When in doubt, verify. Cross-check model numbers against public directories, match every rating to the actual installation environment, and collect your documentation before submittal rather than after.