Energizer LED GLS E27 7.2W Filament Non-Dimmable - Daylight 6500K

This is a 7.2W LED filament bulb with the classic GLS pear shape and an E27 screw cap, the size most UK pendants and table lamps take. It puts out 1521 lumens at 6500K, which the pack labels daylight: a crisp, blue leaning white rather than the yellow of a traditional filament lamp. The glass is clear, so the LED filament arms inside stay on show, and the pack states that this is a 100W replacement. The energy label carries a class A rating at 8kWh/1000h.

A clear bulb suits fittings where the lamp itself is part of the look: an open pendant, a caged shade, a wall bracket with the glass facing out. The 6500K output is the brightest and coolest white in the usual domestic range, so it earns its place where you need to see detail rather than settle in for the evening. Garages, workshops, utility rooms, garden offices, kitchens with poor natural light and stairwells all suit it. In a living room or a bedroom it will read as stark next to warm white lamps, so we would keep the two apart rather than mix them in one space.

This bulb is not dimmable, so put it on a plain switch: a dimmer will usually make an LED flicker, buzz or fail early. The pack prints a 50-year lifespan claim. The manufacturer does not state an IP rating, so this is one for indoor fittings. Each box holds one bulb, and our minimum order is 12, sold in multiples of 12, which makes it a sensible way to relamp a whole property in one go. It sits alongside other LED bulbs we stock with B15 (SBC) and GU10 caps, including candle shapes, if you have mixed fittings to cover.

Will this fit my existing lamp holder?

It has an E27 screw cap, the larger of the two common screw sizes used in the UK. Check the old bulb: if it twists in on a threaded metal base around 27mm across, this one will fit.

What wattage does it replace?

The pack states it as a 100W replacement. At 1521 lumens it gives the sort of output people expect from an old 100W pearl bulb while drawing only 7.2W.

Can I put it on a dimmer switch?

No. This bulb is non-dimmable and needs a plain on and off switch. Run on a dimmer circuit, an LED like this can flicker, hum or fail well before its time.

What does 6500K daylight actually look like?

It is a crisp white with a slight blue cast, much cooler than the 2700K warm white most living rooms use. It helps you judge colour and see fine detail.

Will the filament show in an open shade?

Yes. The glass is clear and the LED filament arms run up the centre of the bulb, so it is made to be looked at rather than hidden behind a diffuser.

Why is the minimum order 12?

This line is sold in trade quantities, so the smallest order is 12 bulbs in multiples of 12. Each box holds one bulb, which is handy when relamping several rooms at once.