There are 4 main types of light bulbs:

• LED (the most long-lasting and energy-efficient)

• Incandescent (old type, no longer widely preferred)

• Fluorescent

• Halogen

For our homes, the most suitable and long-lasting option is LED.

What is Lumen?

The lumen value on the package indicates how bright the bulb is.

• Living room and bedroom: 1000–2000 lumens

• Kitchen and bathroom: 3000–4000 lumens

These are total lumen values based on average home sizes in Turkey. They may vary slightly for very large or very small spaces but still work well. You may need to spread this amount of light across the entire space. It’s difficult—and usually ineffective—to try achieving these values with just one bulb. Like the examples in the video, it’s better to distribute lighting across multiple fixtures to reach the total desired lumen value.

Kelvin Value: The Color Temperature of Light

(It’s essentially the color of the light.)

• Low Kelvin (2700K): Warm, yellowish white
  Ideal for living rooms and bedrooms

• High Kelvin (3000–5000K): Cool, white light
  Best for kitchens or office spaces

Socket Type: How the Bulb Connects

The socket where the bulb is installed:

• E27 (most common): 27 mm diameter

• E14: 14 mm diameter

• Some special types may exist, like G or B types.
  Always check the socket type before buying a bulb.

Watt Value: The Energy Used by the Bulb

In the past, wattage directly indicated brightness.
For example, old incandescent bulb packages didn’t mention lumens. A 60W bulb was brighter than a 40W.

But in LED bulbs, wattage no longer indicates brightness—it only shows energy consumption.

For those used to the old system, manufacturers often still list comparisons:

• 4W = 60W — This means the LED bulb uses only 4 watts of energy but gives off light as bright as a 60-watt incandescent bulb. In the new system, that’s about 800 lumens.

So, bulbs that require more watts to produce the same lumens are less economical. It’s that simple.

CRI Value

Some packages mention CRI (Color Rendering Index).
Make sure it’s above 80. Good-quality bulbs are usually 90 or higher, which means they display colors more accurately.

Choose Energy Class A Products

They are better for the environment and your wallet.

Lighting is a deep topic. More tips coming soon. Stay tuned 💛