Energizer 5W Dimmable LED ST64 Gold Filament Bulb E27 2200K Warm White

The Energizer ST64 is a 5W dimmable LED bulb with gold-tinted glass, a visible LED filament arrangement, and an E27 screw base. The bulb produces 550 lumens at 2200K, a warm amber tone lower than standard warm white (2700K-3000K), creating a soft glow that replicates early Edison-era incandescent lamps. The gold tint on the glass envelope adds to the vintage aesthetic when the bulb is off and intensifies the amber cast when lit.

Designed for decorative pendant fittings, exposed-bulb table lamps, wall sconces and chandeliers where the bulb itself forms part of the visual design, the ST64 shape (64mm diameter, 145mm height) suits larger lampshades and open fittings. The 320-degree beam angle provides near-omnidirectional light distribution, making it suitable for general ambient lighting in living rooms, dining rooms and bedrooms. The dimmable function allows brightness adjustment from full 550 lumens down to a low glow, compatible with most leading-edge and trailing-edge dimmers.

At 5W consumption, the bulb replaces 40W incandescent equivalents, reducing running costs by approximately 87% over the bulb's rated 15,000-hour lifespan. The E27 base fits standard UK Edison screw lampholders. The Energy Rating E classification reflects the 2200K colour temperature, which produces fewer lumens per watt than cooler white LEDs, but the lower energy rating is offset by the reduced wattage compared to incandescent alternatives. The gold glass finish and filament design remain visible when dimmed, maintaining the decorative quality at all brightness levels.

Is this bulb dimmable and what dimmers does it work with?

Yes, the Energizer ST64 is dimmable and compatible with most leading-edge and trailing-edge dimmers. If you experience flickering or a limited dimming range, the dimmer may need to be replaced with a model specifically rated for low-wattage LED loads.

What colour is the light output at 2200K?

2200K produces a warm amber light similar to candlelight or early tungsten filament bulbs, noticeably warmer and more orange-toned than standard warm white (2700K-3000K). This creates a cosy, low-contrast ambient light rather than functional task lighting.

What incandescent wattage does this replace?

At 550 lumens, the 5W LED replaces a 40W incandescent bulb. The visible filament design and gold glass mimic the appearance of traditional incandescent Edison bulbs while reducing energy consumption by approximately 87%.

Will the bulb fit in a standard UK lamp socket?

Yes, the E27 base (Edison screw) fits standard UK ES lampholders. The 64mm bulb diameter and 145mm overall height suit most pendant fittings and table lamps designed for medium to large decorative bulbs.