E27 (ES) LED GLS Bulb 4.9W 470lm Non-Dimmable - Cool White 4000K

This is a standard GLS bulb, the familiar rounded pear shape most of us picture when we think of a light bulb, rebuilt around LEDs. It draws 4.9W and gives back 470 lumens, which the pack rates as the equal of a 40W conventional bulb. The cap is E27, the larger of the two screw fittings, so check the old bulb for a 27mm threaded base rather than the smaller E14 before ordering. Light comes out at 4,000K, a cool white that reads clean and crisp against yellower 2,700K and 3,000K lamps, and the white diffuser spreads it evenly instead of throwing a hard point of light.

Cool white at this level suits rooms where you want to see clearly: kitchen ceilings, utility rooms, garages, workshops, home offices and hallways that get little daylight. At 470 lumens one bulb lights a small room adequately, and a three or five lamp fitting built from them gives a bright, even wash. It works well in pendants, opal shades and older table lamps with an ES holder, and the traditional shape sits properly inside a shade. For a cosier light in living rooms and bedrooms, choose a 2,700K or 3,000K lamp and keep this one for the working parts of the house.

This lamp is not dimmable, so give it a plain on/off switch; on a dimmer circuit it may flicker, buzz or fail early. The pack states a 10 year life, 10,000 hours, more than 10,000 on/off switching cycles and no mercury, and it runs on 220 to 240V. The energy label rates it F, at 5kWh per 1,000 hours. Its IP20 rating means indoor, dry positions only. Each box holds one bulb, and the minimum order is 5, sold in multiples of 5. The wider Eveready range includes a 7W E27 filament GLS and B15 candle and golf bulbs in warm white, cool white and daylight.

Will this fit my light fitting?

It has an E27 screw cap, sometimes called ES or Edison screw, with a 27mm threaded base. Unscrew the old bulb and compare the thread; if it is the smaller 14mm E14, this one will not fit.

Can I use it on a dimmer switch?

No. The specification confirms it is not dimmable, so it needs a standard on/off switch. On a dimmer circuit it may flicker, buzz or fail well before its rated life.

How bright is 470 lumens in a real room?

The pack rates it as the equal of a 40W conventional bulb, so one is enough for a small room, a bedside lamp or a hallway. Multi lamp ceiling fittings add up quickly.

What does 4,000K cool white actually look like?

It is a clean, neutral white with none of the yellow warmth of a 2,700K lamp and none of the blue edge of 6,500K daylight. Good for kitchens, offices and workshops.

How long should it last?

The pack prints a 10 year life based on 10,000 hours of use and more than 10,000 on/off switching cycles, so frequent switching in a hallway or landing is not a problem.

Do I have to buy more than one?

Each box holds a single bulb, and our minimum order on this listing is 5 boxes, sold in multiples of 5. Spares are worth having if several fittings use the same lamp.