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Energizer 4.2W E27 LED GLS Bulb 2700K Warm White - 470lm Non-Dimmable

£149
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Energizer 4.2W E27 LED GLS bulb delivers 470 lumens of warm white 2700K light through a standard Edison screw base, replacing traditional 40W incandescent bulbs while consuming one-tenth of the power. The GLS (General Lighting Service) shape is the classic bulb profile that fits most table lamps, ceiling pendants and bare-bulb fittings found in UK homes.

Designed for ambient and general room lighting rather than task-specific applications, the 240° beam angle distributes light evenly across living rooms, bedrooms, hallways and dining areas. The 2700K colour temperature produces a warm, slightly yellow-toned white that softens the feel of a room after dark and works well in spaces where relaxation and comfort matter more than clinical brightness. The non-dimmable design means the bulb operates at full 470-lumen output whenever switched on, with no compatibility concerns around dimmer switches.

Energizer rates the bulb for a 15-year lifespan based on average domestic use of 2.7 hours per day, which translates to approximately 15,000 hours of operation before the LED output degrades below usable levels. The frosted polycarbonate diffuser over the LED array hides the individual diodes and creates a soft, even glow similar to a traditional filament bulb. At 60mm diameter and 110mm height, the bulb fits standard lampshade dimensions without protruding awkwardly from most shades.

Specification
Weight (KG) 0.05
Width (mm) 60
Height (mm) 110
Depth (mm) 60
Wattage 4.2W
Lumen 470
Lamp Shape GLS
Lamp Base E27
Energy Rating E
Kelvin 2,700K
Colour Temperature Warm White
Dimmable No
Beam Angle 240
LED or Halogen LED
Frequently Asked

Can this bulb be used with a dimmer switch?

No. This bulb is non-dimmable and should only be used on standard on/off switches. Installing it on a dimmer circuit may cause flickering, buzzing or premature failure.

What's the equivalent brightness to a traditional bulb?

The 470-lumen output is comparable to a traditional 40W incandescent bulb. The warm white 2700K colour temperature also matches the tone of an old-style tungsten filament bulb.

How long does the bulb last?

Energizer rates this bulb for 15,000 hours, which equates to approximately 15 years based on 2.7 hours of daily use. Actual lifespan depends on usage patterns and ambient temperature.

Does it fit standard lampshades and ceiling fittings?

Yes. The E27 Edison screw base is the standard large screw fitting used in most UK table lamps, pendants and ceiling roses. The 60mm diameter and 110mm height match typical GLS bulb dimensions, so it fits most shades without protruding awkwardly.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Light source

Takes standard bulbs

Takes standard E27 bulbs, so you choose the brightness and colour to suit the room.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Energizer 4.2W E27 LED GLS bulb delivers 470 lumens of warm white 2700K light through a standard Edison screw base, replacing traditional 40W incandescent bulbs while consuming one-tenth of the power. The GLS (General Lighting Service) shape is the classic bulb profile that fits most table lamps, ceiling pendants and bare-bulb fittings found in UK homes.

    Designed for ambient and general room lighting rather than task-specific applications, the 240° beam angle distributes light evenly across living rooms, bedrooms, hallways and dining areas. The 2700K colour temperature produces a warm, slightly yellow-toned white that softens the feel of a room after dark and works well in spaces where relaxation and comfort matter more than clinical brightness. The non-dimmable design means the bulb operates at full 470-lumen output whenever switched on, with no compatibility concerns around dimmer switches.

    Energizer rates the bulb for a 15-year lifespan based on average domestic use of 2.7 hours per day, which translates to approximately 15,000 hours of operation before the LED output degrades below usable levels. The frosted polycarbonate diffuser over the LED array hides the individual diodes and creates a soft, even glow similar to a traditional filament bulb. At 60mm diameter and 110mm height, the bulb fits standard lampshade dimensions without protruding awkwardly from most shades.

    Specification
    Weight (KG) 0.05
    Width (mm) 60
    Height (mm) 110
    Depth (mm) 60
    Wattage 4.2W
    Lumen 470
    Lamp Shape GLS
    Lamp Base E27
    Energy Rating E
    Kelvin 2,700K
    Colour Temperature Warm White
    Dimmable No
    Beam Angle 240
    LED or Halogen LED
    Frequently Asked

    Can this bulb be used with a dimmer switch?

    No. This bulb is non-dimmable and should only be used on standard on/off switches. Installing it on a dimmer circuit may cause flickering, buzzing or premature failure.

    What's the equivalent brightness to a traditional bulb?

    The 470-lumen output is comparable to a traditional 40W incandescent bulb. The warm white 2700K colour temperature also matches the tone of an old-style tungsten filament bulb.

    How long does the bulb last?

    Energizer rates this bulb for 15,000 hours, which equates to approximately 15 years based on 2.7 hours of daily use. Actual lifespan depends on usage patterns and ambient temperature.

    Does it fit standard lampshades and ceiling fittings?

    Yes. The E27 Edison screw base is the standard large screw fitting used in most UK table lamps, pendants and ceiling roses. The 60mm diameter and 110mm height match typical GLS bulb dimensions, so it fits most shades without protruding awkwardly.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.