Energizer 5W Dimmable LED Candle Filament Bulb E27 4000K Cool White

The Energizer 5W E27 candle filament bulb is a clear glass LED candle with exposed filament strips visible through the bulb envelope, delivering 550 lumens at 4000K cool white. The E27 Edison screw base fits standard UK light fittings, and the 5W draw replaces traditional 40W incandescent candles at approximately one-eighth of the energy consumption.

Designed for decorative fittings where the bulb is visible, the filament design pairs the aesthetics of traditional carbon-filament bulbs with LED efficiency. The 4000K colour temperature produces a neutral cool white light that sits between warm domestic lighting (2700K-3000K) and bright office white (5000K+), making it suitable for kitchens, bathrooms, hallways and utility areas where clear task visibility matters more than warm ambient glow. The bulb is fully dimmable with compatible dimmer switches.

The clear glass candle envelope measures approximately 35mm diameter and 98mm overall length, fitting inside most chandelier shades, wall light housings and pendant fittings designed for candle bulbs. The exposed filament strips glow amber-gold when dimmed low, giving a visual warmth that contrasts with the cooler colour temperature at full brightness. The bulb carries an E energy rating under current UK regulations and a stated 15-year lifespan based on average domestic use patterns.

Is this bulb dimmable?

Yes. The bulb is rated as dimmable and works with most LED-compatible dimmer switches. Dimmer compatibility can vary by manufacturer, so if you experience flickering or limited dimming range, check that your dimmer is rated for LED loads and consider upgrading to a trailing-edge or universal dimmer designed for low-wattage LEDs.

What colour temperature is 4000K?

4000K is classified as cool white, sitting between warm white (2700K-3000K) and daylight white (5000K+). It produces a neutral, slightly crisp light that enhances visibility without the blue cast of higher colour temperatures. It suits task-focused areas like kitchens, bathrooms and hallways rather than living rooms or bedrooms where warmer tones are typically preferred.

What does 550 lumens compare to?

550 lumens is approximately equivalent to a traditional 40W incandescent candle bulb. This level of output suits decorative multi-bulb fittings (chandeliers, wall lights with multiple arms) rather than single-bulb task lighting, which typically needs 800+ lumens.

Will the filament be visible through a lampshade?

Yes. The filament strips are clearly visible through the clear glass envelope, so this bulb is designed for fittings where the bulb itself is on display or only lightly diffused by a shade. In opaque or heavily frosted shades the filament effect is lost, and a standard pearl-finish LED would perform identically at lower cost.