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Energizer 4W LED GLS Filament Bulb B22 2700K Warm White - Non-Dimmable

£199
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Description

The Energizer 4W LED GLS filament bulb pairs classic clear-glass filament styling with modern LED efficiency, delivering 470 lumens of 2700K warm white light through a B22 bayonet cap fitting. The exposed filament design recreates the look of traditional tungsten bulbs while consuming 90% less energy than the 40W incandescent bulbs it replaces.

Designed for standard UK bayonet fittings in table lamps, floor lamps, ceiling pendants and wall lights, the bulb fits anywhere a traditional GLS shape works. The 2700K colour temperature produces a warm amber-toned light suited to living rooms, bedrooms and hallways where a cosy atmosphere is needed rather than bright task lighting. The 320-degree beam angle provides wide light distribution without the directional hotspots of spotlight-style LEDs.

At 60mm diameter and 109mm height, the bulb matches the proportions of a standard GLS shape and sits comfortably in most decorative lampshades without protruding. The clear glass envelope shows the LED filament strips when the bulb is off, giving a vintage aesthetic that works in both traditional and industrial-style fittings. Energizer rates this bulb for a 15-year lifespan based on average household use, reducing the frequency of replacements compared to halogen or incandescent alternatives.

The bulb carries an Energy Rating of E under current UK labelling, reflecting its consumption relative to newer high-efficiency LED models, but still represents a substantial saving over the incandescent technology it replaces. Non-dimmable operation means the bulb should not be paired with dimmer switches — use only on standard on-off circuits.

Specification
Weight (KG) 0.03
Width (mm) 60
Height (mm) 109
Depth (mm) 60
Wattage 4W
Lumen 470
Lamp Shape GLS
Lamp Base B22
Energy Rating E
Kelvin 2,700K
Colour Temperature Warm White
Dimmable No
Beam Angle 320
LED or Halogen LED
Frequently Asked

Can this bulb be used with a dimmer switch?

No. This is a non-dimmable LED bulb and must only be used on standard on-off switching circuits. Pairing it with a dimmer switch may cause flickering, reduced lifespan or failure of the bulb.

What wattage incandescent does this replace?

This 4W LED bulb replaces a traditional 40W incandescent bulb while delivering the same 470 lumens of light output. The energy saving is approximately 90% compared to the older technology.

What colour is the light?

The bulb produces 2700K warm white light with an amber tone similar to traditional tungsten bulbs. This colour temperature suits residential spaces where a relaxed atmosphere is preferred over bright white task lighting.

Will the filament be visible when the bulb is off?

Yes. The clear glass envelope shows the LED filament strips inside the bulb even when it is switched off, giving a decorative vintage appearance that works well in exposed-bulb fittings and clear glass lampshades.

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 B22 bulbs, so you choose the brightness and colour to suit the room.

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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 4W LED GLS filament bulb pairs classic clear-glass filament styling with modern LED efficiency, delivering 470 lumens of 2700K warm white light through a B22 bayonet cap fitting. The exposed filament design recreates the look of traditional tungsten bulbs while consuming 90% less energy than the 40W incandescent bulbs it replaces.

    Designed for standard UK bayonet fittings in table lamps, floor lamps, ceiling pendants and wall lights, the bulb fits anywhere a traditional GLS shape works. The 2700K colour temperature produces a warm amber-toned light suited to living rooms, bedrooms and hallways where a cosy atmosphere is needed rather than bright task lighting. The 320-degree beam angle provides wide light distribution without the directional hotspots of spotlight-style LEDs.

    At 60mm diameter and 109mm height, the bulb matches the proportions of a standard GLS shape and sits comfortably in most decorative lampshades without protruding. The clear glass envelope shows the LED filament strips when the bulb is off, giving a vintage aesthetic that works in both traditional and industrial-style fittings. Energizer rates this bulb for a 15-year lifespan based on average household use, reducing the frequency of replacements compared to halogen or incandescent alternatives.

    The bulb carries an Energy Rating of E under current UK labelling, reflecting its consumption relative to newer high-efficiency LED models, but still represents a substantial saving over the incandescent technology it replaces. Non-dimmable operation means the bulb should not be paired with dimmer switches — use only on standard on-off circuits.

    Specification
    Weight (KG) 0.03
    Width (mm) 60
    Height (mm) 109
    Depth (mm) 60
    Wattage 4W
    Lumen 470
    Lamp Shape GLS
    Lamp Base B22
    Energy Rating E
    Kelvin 2,700K
    Colour Temperature Warm White
    Dimmable No
    Beam Angle 320
    LED or Halogen LED
    Frequently Asked

    Can this bulb be used with a dimmer switch?

    No. This is a non-dimmable LED bulb and must only be used on standard on-off switching circuits. Pairing it with a dimmer switch may cause flickering, reduced lifespan or failure of the bulb.

    What wattage incandescent does this replace?

    This 4W LED bulb replaces a traditional 40W incandescent bulb while delivering the same 470 lumens of light output. The energy saving is approximately 90% compared to the older technology.

    What colour is the light?

    The bulb produces 2700K warm white light with an amber tone similar to traditional tungsten bulbs. This colour temperature suits residential spaces where a relaxed atmosphere is preferred over bright white task lighting.

    Will the filament be visible when the bulb is off?

    Yes. The clear glass envelope shows the LED filament strips inside the bulb even when it is switched off, giving a decorative vintage appearance that works well in exposed-bulb fittings and clear glass lampshades.

    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.