{"id":269,"date":"2026-09-01T03:38:30","date_gmt":"2026-08-31T19:38:30","guid":{"rendered":"http:\/\/www.interseamarine.com\/blog\/?p=269"},"modified":"2026-09-01T03:38:30","modified_gmt":"2026-08-31T19:38:30","slug":"how-to-choose-the-right-power-for-a-cob-downlight-4b43-634346","status":"publish","type":"post","link":"http:\/\/www.interseamarine.com\/blog\/2026\/09\/01\/how-to-choose-the-right-power-for-a-cob-downlight-4b43-634346\/","title":{"rendered":"How to choose the right power for a COB Downlight?"},"content":{"rendered":"

When it comes to lighting solutions, COB (Chip on Board) downlights have emerged as a popular choice for both residential and commercial spaces. Their energy efficiency, long lifespan, and high – quality illumination make them a go – to option for many. As a COB downlight supplier, I understand that one of the most crucial decisions customers face is choosing the right power for their COB downlights. In this blog, I’ll guide you through the process, sharing insights and tips to help you make an informed choice. COB Downlight<\/a><\/p>\n

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Understanding COB Downlight Power<\/h3>\n

Before delving into the selection process, it’s essential to understand what power means in the context of COB downlights. Power is typically measured in watts (W) and represents the amount of electrical energy the downlight consumes. A higher – wattage downlight generally produces more light, but it also consumes more energy.<\/p>\n

The light output of a COB downlight is measured in lumens (lm). Lumens indicate the total amount of visible light emitted by the light source. The relationship between watts and lumens can vary depending on the efficiency of the COB technology used. Modern COB downlights are designed to provide a high lumen output with relatively low wattage, thanks to advancements in LED technology.<\/p>\n

Factors to Consider When Choosing the Right Power<\/h3>\n

1. Room Size<\/h4>\n

The size of the room is one of the primary factors to consider when selecting the power of a COB downlight. Larger rooms require more light to be adequately illuminated. As a general rule of thumb, for a small room such as a powder room or a closet (less than 5 square meters), a 3 – 5W COB downlight may be sufficient. These low – wattage downlights can provide enough light for basic tasks without over – illuminating the space.<\/p>\n

For medium – sized rooms like bedrooms, home offices, or small living rooms (around 5 – 15 square meters), 5 – 10W COB downlights are a good choice. They offer a balance between energy consumption and light output, ensuring that the room is well – lit for daily activities.<\/p>\n

In large rooms such as open – plan living areas, commercial showrooms, or conference halls (over 15 square meters), 10 – 20W or even higher – wattage COB downlights may be necessary. These high – power downlights can cover a larger area and provide uniform illumination.<\/p>\n

2. Room Function<\/h4>\n

The function of the room also plays a significant role in determining the appropriate power of the COB downlights. Different activities require different levels of illumination.<\/p>\n