Description
The Energizer 4.2W LED candle bulb is a dimmable E27 fitting designed as a direct replacement for 40W incandescent candle bulbs. It produces 470 lumens at 4000K cool white, giving a neutral, slightly crisp light that suits task-oriented spaces. The E27 Edison screw base fits standard UK and European lamp holders in chandeliers, wall sconces, pendant fittings and table lamps.
The cool white 4000K colour temperature sits between warm domestic lighting and clinical daylight, making it appropriate for kitchens, bathrooms, utility rooms, home offices and craft spaces where colour accuracy and clarity matter more than ambient warmth. The bulb is dimmable across most leading-edge and trailing-edge dimmer switches, allowing brightness adjustment from full output down to approximately 10% without flicker on compatible dimmers.
The candle shape with a frosted glass envelope diffuses the LED elements inside, removing visible hot spots and giving an even light distribution when used in exposed fittings. At 4.2W consumption the bulb draws 89% less power than the 40W incandescent it replaces, and the rated 15-year lifespan reduces replacement frequency. The Energy Rating E classification under 2021 UK regulations reflects the shift in rating standards — this is still a far more efficient light source than any halogen or incandescent equivalent.
Specification
| Wattage |
4.2W |
| Lumen |
470lm |
| Lamp Shape |
Candle |
| Lamp Base |
E27 |
| Energy Rating (New Regs) |
E |
| Kelvin |
4,000K |
| Colour Temperature |
Cool White |
| Dimmable? |
Yes |
| LED or Halogen |
LED |
Frequently Asked
Is this bulb dimmable?
Yes. The Energizer 4.2W candle bulb is dimmable and compatible with most leading-edge and trailing-edge dimmer switches. Performance may vary by dimmer model — if you experience flicker or the bulb does not dim smoothly, the dimmer may require an LED-compatible load or minimum wattage setting.
What's the difference between 4000K and 2700K?
4000K produces a cool white light with a neutral, slightly crisp tone, while 2700K is warm white with a yellow-orange tone closer to traditional incandescent bulbs. 4000K suits task lighting in kitchens, bathrooms and offices; 2700K suits living rooms, bedrooms and decorative settings.
What does the E27 base fit?
E27 is the standard Edison screw base used in most UK and European domestic light fittings. It fits chandeliers, wall sconces, table lamps, pendant lights and ceiling fittings designed for screw-in bulbs. It does not fit bayonet (B22) sockets.
How long does the bulb last?
Energizer rates this bulb at 15 years based on average use of 2.7 hours per day. Actual lifespan varies with usage patterns, ambient temperature and dimmer compatibility.