How do I choose the right LED downlight?

Practical buying guide for recessed LED downlights (for commercial & residential projects)

1. Beam angle

• Narrow beam (15°‑24°): accent lighting, highlight artwork, display shelves, hotel wall washing

• Medium beam (30°‑40°): general ambient lighting for bedrooms, hotel rooms, corridors

• Wide beam (≥60°): large‑area basic lighting, office ceiling

2. Colour Temperature (CCT)

• 2700K‑3000K Warm white: hotel guest room, bedroom, lounge, create cozy atmosphere

• 3500K‑4000K Neutral white: office, retail shop, reception area, true‑to‑life colour rendering

• 5000K‑6000K Cool white: warehouse, basement, high‑brightness functional space

3. CRI (Colour Rendering Index)

• Ra＞80: standard for general use

• Ra＞90 / Ra95: preferred for hotel, retail, showroom. Objects, skin tone and artwork show natural, vivid colours. Critical for high‑end projects.

4. Anti‑glare capability (UGR)

• Deep‑cup anti‑glare design like your sample downlight → low UGR＜16

• Suitable for bedrooms, hotel rooms, offices; avoids uncomfortable direct glare to eyes.

Avoid exposed bare‑chip downlights for human‑occupied spaces.

5. Power & luminous flux

• 2.6‑3 m ceiling: 7‑12 W

• 3‑4 m ceiling: 12‑18 W

  Do not only look at wattage; check lumens(lm) for real brightness.

  
  

6. Heat dissipation

As we discussed earlier: higher thermal‑conductivity MCPCB (2.0W/m·K) improves heat dissipation performance.

7. Driver & dimming compatibility

• Constant‑current driver for stable performance.

• If you need dimming: confirm compatibility with 0‑10V / DALI / Triac dimmer.

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8. Cut‑out size

Match ceiling cut‑out dimension before installation. Common sizes: 75mm, 90mm, 110 mm etc.