Energizer 4W LED GLS Bulb E27 Gold Filament 2200K Warm White Non-Dimmable

The Energizer 4W LED GLS bulb combines a gold-tinted glass envelope with a visible LED filament strip running vertically through the centre, designed to mimic the look of traditional carbon-filament Edison bulbs. The E27 screw base fits standard UK lampholders, and the bulb outputs 440 lumens at 2200K, delivering a warm amber glow closer to candlelight than standard warm white bulbs.

Designed for decorative and ambient applications rather than task lighting, this bulb suits exposed-filament pendants, table lamps with clear glass shades, wall sconces and vintage-style industrial fixtures where the bulb itself is visible. The 2200K colour temperature produces a noticeably warmer, more golden tone than typical 2700K-3000K warm white LEDs, making it better suited to evening and hospitality settings where soft, low-intensity light creates atmosphere.

The gold tint on the glass envelope softens the light output and gives the bulb a bronze appearance when switched off, contrasting with clear or frosted glass bulbs in the same fixture. At 60mm diameter and 117mm height, the GLS profile matches the size of a standard household bulb. The 4W power draw replaces a 35W incandescent while drawing 88% less energy, and the non-dimmable driver keeps the unit cost down for applications where dimming is not required.

The 320-degree beam angle provides near-omnidirectional light distribution typical of GLS bulbs. The Energy Rating of E reflects current UK bulb efficiency standards — this rating sits in the middle of the post-2021 LED scale, which runs from A (most efficient) to G. The visible filament design means the bulb performs best in fixtures where it can be seen, rather than hidden inside a closed shade or recessed fitting.

What colour temperature is 2200K compared to standard warm white?

At 2200K this bulb produces a noticeably warmer, more amber tone than typical warm white LEDs, which sit between 2700K-3000K. The light is closer to candlelight or early evening sunset, making it well-suited to atmospheric and decorative applications rather than functional task lighting.

Is this bulb suitable for reading or task lighting?

Not really. The 440 lumens output and 2200K colour temperature are designed for ambient and decorative use. For reading or desk work, a higher lumen output and a cooler colour temperature around 3000K-4000K would be more appropriate.

Can this bulb be used in enclosed fittings?

Check the fitting for ventilation. Some fully-enclosed glass or metal shades can cause LEDs to overheat if there is no airflow. This bulb performs best in open or semi-open fixtures where the filament can be seen and air can circulate.

What does the gold tint do to the light output?

The gold-tinted glass filters the light, reducing overall brightness slightly and adding warmth to the colour tone. When the bulb is off, the gold tint gives the glass a bronze appearance, which is decorative in exposed-filament fixtures.