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Energizer 5W Dimmable LED Candle Filament Bulb - Cool White B15 4000K

£199
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Description

The Energizer 5W LED candle bulb uses a visible filament LED element behind a clear glass envelope, giving the appearance of a traditional incandescent candle bulb while drawing just 5W to produce 550 lumens. The B15 small bayonet cap fits UK decorative light fittings including wall lights, chandeliers and candelabra-style table lamps where the smaller 15mm base diameter is required over the standard B22.

Rated at 4000K, the bulb produces a cool white light that sits between warm white (2700K-3000K) and daylight white (5000K+), offering clearer colour rendering than warm tones without the clinical feel of daylight bulbs. The dimmable design works with most leading-edge and trailing-edge dimmer switches, allowing light levels to be reduced for ambient lighting or increased for task lighting as needed.

At 5W consumption the bulb replaces traditional 40W incandescent candles, reducing energy use by approximately 87% while maintaining comparable light output. The E energy rating under current EU/UK regulations reflects the efficiency gains LED technology delivers over older bulb types. Energizer rates the bulb for a 15-year average lifespan based on typical domestic use patterns of 2.7 hours per day.

Specification
Wattage 5W
Lumen 550lm
Lamp Shape Filament
Lamp Base B15
Energy Rating (New Regs) E
Kelvin 4,000K
Colour Temperature Cool White
Dimmable? Yes
LED or Halogen LED
Frequently Asked

What is a B15 bulb base?

B15 is a small bayonet cap with a 15mm diameter base, also called SBC. It's smaller than the standard B22 bayonet found in most UK ceiling lights, and is used in decorative fittings such as chandeliers, wall lights and candelabra-style lamps where space is limited.

Is this bulb compatible with dimmer switches?

Yes. The bulb is rated as dimmable and works with most modern leading-edge and trailing-edge dimmer switches. Compatibility can vary by dimmer model, so if flickering or limited dimming range occurs, check that the dimmer is rated for LED loads and that the total wattage of bulbs on the circuit meets the dimmer's minimum load requirement.

What is 4000K cool white used for?

4000K sits between warm white and daylight white, producing a neutral, slightly crisp light that improves colour clarity compared to warmer tones. It's commonly used in kitchens, bathrooms, home offices and hallways where clear visibility matters more than creating a cosy atmosphere.

How long does the bulb last?

Energizer rates this bulb for a 15-year lifespan based on typical domestic use of 2.7 hours per day. Actual lifespan will vary depending on daily usage hours, switching frequency and whether the bulb is dimmed regularly.

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.

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Takes standard bulbs

Takes standard B15 bulbs, so you choose the brightness and colour to suit the room.

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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 5W LED candle bulb uses a visible filament LED element behind a clear glass envelope, giving the appearance of a traditional incandescent candle bulb while drawing just 5W to produce 550 lumens. The B15 small bayonet cap fits UK decorative light fittings including wall lights, chandeliers and candelabra-style table lamps where the smaller 15mm base diameter is required over the standard B22.

    Rated at 4000K, the bulb produces a cool white light that sits between warm white (2700K-3000K) and daylight white (5000K+), offering clearer colour rendering than warm tones without the clinical feel of daylight bulbs. The dimmable design works with most leading-edge and trailing-edge dimmer switches, allowing light levels to be reduced for ambient lighting or increased for task lighting as needed.

    At 5W consumption the bulb replaces traditional 40W incandescent candles, reducing energy use by approximately 87% while maintaining comparable light output. The E energy rating under current EU/UK regulations reflects the efficiency gains LED technology delivers over older bulb types. Energizer rates the bulb for a 15-year average lifespan based on typical domestic use patterns of 2.7 hours per day.

    Specification
    Wattage 5W
    Lumen 550lm
    Lamp Shape Filament
    Lamp Base B15
    Energy Rating (New Regs) E
    Kelvin 4,000K
    Colour Temperature Cool White
    Dimmable? Yes
    LED or Halogen LED
    Frequently Asked

    What is a B15 bulb base?

    B15 is a small bayonet cap with a 15mm diameter base, also called SBC. It's smaller than the standard B22 bayonet found in most UK ceiling lights, and is used in decorative fittings such as chandeliers, wall lights and candelabra-style lamps where space is limited.

    Is this bulb compatible with dimmer switches?

    Yes. The bulb is rated as dimmable and works with most modern leading-edge and trailing-edge dimmer switches. Compatibility can vary by dimmer model, so if flickering or limited dimming range occurs, check that the dimmer is rated for LED loads and that the total wattage of bulbs on the circuit meets the dimmer's minimum load requirement.

    What is 4000K cool white used for?

    4000K sits between warm white and daylight white, producing a neutral, slightly crisp light that improves colour clarity compared to warmer tones. It's commonly used in kitchens, bathrooms, home offices and hallways where clear visibility matters more than creating a cosy atmosphere.

    How long does the bulb last?

    Energizer rates this bulb for a 15-year lifespan based on typical domestic use of 2.7 hours per day. Actual lifespan will vary depending on daily usage hours, switching frequency and whether the bulb is dimmed regularly.

    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.