what are the best light bulbs to buy

At that place are iii types of energy-saving light bulb: meaty fluorescent lamps, known as CFLs (the nearly mutual type of light seedling); halogens (which are at present banned from sale); and LEDs.

In this adept guide, nosotros'll aid you to choose the right low-cal bulbs for your home, whether you're shopping for standard bulbs or a multipack of internet-enabled smart bulbs. Opt for smart bulbs and yous'll be able to control your lights using your vocalization or from your mobile phone.

Below, nosotros explicate the central differences betwixt types of lite bulb. Plus, we accept information on choosing the right bulb brightness and colour, along with instructions on what to do with your sometime, retired bulbs.

Aside from swapping out your old light bulbs, there are enough of other means to lower your free energy bill. Read our communication on how to brand your habitation more energy efficient .

Element of group vii vs CFL vs LED vs light bulbs: what'southward the divergence?

Our tabular array shows at a glance how these light seedling types compare for lifespan, typical price and energy use – we delve into more than item on the pros and cons of each blazon later in this article.

As you tin can see from our table, LEDs are miles ahead of CFLs and halogens in terms of estimated lifespan, although they're usually the most expensive to buy.

LEDs are also the most free energy-efficient option, using ninety% less energy than traditional incandescent bulbs, which were phased out in the U.k. in 2009. Although the upfront cost might be high, you'll find the difference in your annual free energy bills. Past dissimilarity, CFLs apply 60%-80% less energy than incandescents, while halogens use xx-thirty% less.

When thinking about where to position your bulbs, note that LEDs work fine in low temperatures, whereas CFLs don't. Halogen bulbs will likewise struggle in cold temperatures.

The stage-out of halogen and fluorescent light bulbs

Old-mode 'high-energy' incandescent bulbs stopped beingness sold in the UK from 2009, but they're not the final lite bulb to face the chop because of their relatively poor energy efficiency. In October 2021, the United kingdom of great britain and northern ireland government banned the sale of halogen light bulbs in an effort to 'cut emissions and relieve consumers on their energy bills'.

The regime says 'high-energy' fluorescent lights (including traditional, tube-style fluorescent lights unremarkably found in offices) will follow suit. The program is to first removing these lights from retailer shelves from September 2023, and there's now a good range of LED strip-light alternatives.

Compact fluorescent lamps (CFLs) are low-energy bulbs (although not as low as LEDs), so don't appear to be role of the planned ban. However, we look that manufacturers will stop producing them over the coming years, regardless of whatsoever ban, equally their focus shifts to LEDs. We recommend opting for LEDs where possible, as they'll be sticking around for years to come.

A post on Gov.uk notes that a shift to LED bulbs 'will cut ane.26 1000000 tonnes of CO2' – the equivalent of removing more than than half a meg cars from UK roads. Additional figures claim that effectually 2 thirds of bulbs sold in Great britain are LED lights and that, while they produce the same corporeality of light, these last 'five times longer' than traditional halogen lite bulbs.

There's a take a chance yous'll find a couple of dusty halogen light bulbs notwithstanding on auction at your local DIY store, but retailers will no longer be able to buy new stock once shelves are empty.

To assistance consumers understand the benefit of replacing halogens and fluorescent low-cal bulbs with the about energy-efficient alternatives, all new light bulbs will exist sold with updated energy labels on their boxes.

A new, simpler scale, running from A-1000, will supervene upon the old (and slightly bewildering) A+, A++ and A+++ ratings. The Gov.great britain website says these labels will 'enhance the bar for each course, meaning very few bulbs volition now exist classified every bit A, helping consumers cull the almost environmentally friendly bulbs.'

CFL light bulbs explained

What are CFL light bulbs?

Compact fluorescent lamp (CFL) calorie-free bulbs are the original free energy-efficient culling to now-defunct traditional incandescent bulbs. CFLs typically utilize 60-80% less energy than an incandescent, while halogens use 20-xxx% less and LEDs use an astonishing xc% less.

With the government looking to remove 'high-free energy' fluorescent lights from shelves from 2023, and an increasing industry focus on the move to LEDs, nosotros conceptualize that CFLs will gradually become harder to find. Manufacturers will gradually stop producing CFLs every bit more buyers transition to LEDs.

Erstwhile-style incandescent bulbs had a filament inside that was heated until it glowed, which meant they used up free energy to generate heat. CFL bulbs don't have a filament. Instead they utilise an electric current to excite gases within the bulb that then crusade a phosphorous coating on the within to glow, producing light. This method means less energy is lost to heat and the seedling uses less free energy overall. Some CFLs take a few minutes to reach full brightness.

CFL bulbs come in stick and spiral shapes, although some are now bearded as traditionally shaped bulbs. They typically toll between £3 and £xv.

Nearly modern dimmer switches should work with CFL bulbs, although some older ones might non be compatible.

Pros of CFLs:

CFLs are reasonably cheap to buy, with prices starting as low as £three.
They pay for themselves with energy savings fairly quickly. Replacing just one 60W incandescent with a CFL bulb tin reduce your electricity pecker by around £7 a twelvemonth.
CFL low-cal bulbs have a long lifespan of around x,000 hours (or roughly nigh ten years of use).

Cons of CFLs:

They have a bit of fourth dimension to warm upward and become bright when they're start switched on. This ways CFLs aren't e'er the all-time choice for stairs or bathrooms.
Some CFLs aren't suitable to use with dimmer switches.
These bulbs tend to work poorly in cold temperatures, making them less suitable for unheated rooms or outdoor spaces, such as a garage.
Some CFLs expect significantly different compared with old-style bulbs and it can be tricky to get them in certain shapes and sizes, such equally modest candle bulbs.
Nosotros expect that CFLs will get harder to obtain over coming years every bit the industry shifts its focus more than fully on to LEDs.

LED light bulbs explained

What are LED calorie-free bulbs?

LED lights have been hailed as the future of home lighting, as they use very little energy, are claimed to final a very long time and, unlike regular free energy-saving bulbs, are instantly vivid when switched on. Near smart calorie-free bulbs (see below) are LEDs.

While one-time-fashioned incandescent low-cal bulbs passed electricity through a thin wire filament, LEDs produce lite through the use of a semi-conductor that emits lite energy when an electrical current is passed through it.

Early LEDs were limited by high prices and relatively low light output, but the technology has developed rapidly in recent years. You can now get vivid, efficient LED bulbs that give out as much light as 100W old-fashion bulbs and look simply like a traditional bulb.

Plus, prices are getting lower all the time. While the brightest bulbs tin still set you dorsum around £xx, most cost less than £x, and the energy savings they volition provide in your home brand them well worth because.

Pros of LED bulbs:

LEDs use 90% less energy than traditional incandescents, and can sometimes pay for themselves through energy savings in just a couple of months.
These lite bulbs can last for 25-30 years, depending on which ones y'all buy and how y'all use them.
They give out light almost instantly when you lot flick the lite switch, and then y'all don't have to put upwardly with dim light while your LEDs get going.
They work fine in low temperatures.

Cons of LED bulbs:

Some people don't like the quality of light given out by LED light bulbs, as they can produce a cooler, bluish lite.
To dim LED lights, you might need to upgrade to a dimmer that recognises low electrical loads. The packaging should say whether LEDs are dimmable.
It's tricky to get a consistent look in your home if you lot mix different LED brands and types. The colour temperature and color rendering alphabetize (CRI) can vary more with traditional light bulbs.

Tin can LED lite bulbs affect digital radios?

All electrical appliances, including low-cal bulbs, emit electromagnetic interference (EMI), although this is tightly controlled within the European union. In some rare cases, EMI can bear upon the DAB radio signal.

Nosotros've previously tested lower-priced LED bulbs for radio interference, but haven't establish any bulbs that caused a problem. Despite this, nosotros practice know that 1-2% of Which? members have experienced this issue.

If you're having trouble with radio interference, check that your bulbs have a CE marking and replace them if they don't. If this doesn't prepare the issue, it could be a trouble with your setup, so consult an electrician.

Smart light bulbs explained

What are smart light bulbs?

Smart light bulbs are cyberspace-connected and controllable from anywhere in the world, every bit long as you have a data or wi-fi connectedness. Although you'll notice some incandescent smart lights if you lot store online, most are powered by LEDs.

When setting upwardly a smart lighting system, y'all'll usually need to buy a smart hub – this allows your bulbs to communicate with your router, which makes them cyberspace-enabled. The smart hub connects to your router via an ethernet cable. Once it'southward gear up, you lot tin first adding bulbs to your smart lighting system. But you'll need to make certain these 2 components are compatible – for example, Philips smart bulbs will simply work with a Philips Hue Bridge.

Some smart bulbs will yet function without a smart hub. For case, certain bulbs from LIFX accept congenital-in wi-fi, which means they work independently.

Nosotros've as well seen smart lights that work over Bluetooth as well every bit (or instead of) wi-fi. This ways that although y'all can control the bulbs remotely using a phone or tablet, y'all need to be within a specific range. For case, Philips Hue sells smart bulbs (controlled through the Philips Hue Bluetooth app) that have a Bluetooth range of 'about 30 feet.' Only as Bluetooth bulbs aren't connected to the net via a smart hub, you lot can't control them when you're out of the house.

When shopping for a smart lite bulb, brand certain you pick a bulb that matches your existing fitting. Philips, for example, sells bayonet, Edison screw and GU10 bulbs.

If you're replacing old halogen fittings with LED smart bulbs, you'll exist pleased to hear that your new lights have a much longer lifespan. The downside is that if you're replacing lots of lights in your home with smart bulbs, initial costs tin be high.

Smart seedling features and costs

You can turn smart bulbs on and off at via an app, and most smart lighting systems are compatible with voice commands through Google Assistant or Amazon'south Alexa. Y'all can endeavour saying 'OK, Google, turn the living room lights down to xx%', for example.

Many smart bulbs can change colour , so you lot can change the appearance of your living room depending on your mood or the time of day. You can await to spend up to around £l for a single, color-shifting smart bulb. If yous're shopping for a smart bulb that just switches between warmer and cooler white tones, look to pay £ten-30.

Pros of smart light bulbs

You can control smart light bulbs while out of the firm, which is handy if you accidentally leave a calorie-free on.
Smart bulbs are made with existing lamps and light fixtures in mind and most come up with Edison caps, bayonet caps or both.
As an extra layer of security, you can plough on your lights remotely to deter burglars.
Many smart home hubs come with motility sensors – you tin set them and so that your smart bulbs plough on when they detect motion.

Cons of smart calorie-free bulbs

If y'all're looking to upgrade multiple 'regular' bulbs to smart alternatives, costs can ramp up.
You won't be able to control your smart light bulbs remotely if you have wi-fi or mobile signal issues.
Bluetooth-only smart bulbs tin't be controlled beyond a sure distance.

For more on Philips Hue smart bulbs and key rivals, check our guide to Philips Hue vs other smart lighting systems

Element of group vii light bulbs explained

What are element of group vii light bulbs?

Element of group vii light bulbs comprise a filament enclosed in element of group vii gas, meaning they tin can burn down hotter than an incandescent but yet use less energy. While they're more than energy efficient than traditional incandescent bulbs and were once a decent choice, technology has moved on and in that location are now much more environmentally friendly options.

Because of this, halogen lights have now been banned from sale.

Should I replace my existing element of group vii light bulbs?

With halogens now banned from sale in the UK, you might be wondering whether it's time to replace your own halogen bulbs.

Halogens are more than expensive to run than LEDs and they don't last nearly equally long, so we suggest swapping out your halogens sooner rather than later. Don't look for your halogen bulbs to die before making the switch to an environmentally friendly LED.

Three tips for choosing the right light bulb

1. Buy a light bulb with the correct plumbing equipment and shape

Make sure the bulb fitting and shape matches the one you're replacing by cross-checking the plumbing equipment reference number. If you're buying in store, it could help to have the erstwhile bulb with you. If non, write downwards the fitting reference number and match it with the packaging on the box of your new bulb.

Our graphic, below, shows some of the well-nigh common fittings.

You lot also demand to retrieve most which bulb shape y'all want – at that place's a bewildering multifariousness, and different brands have a subtly different look and characteristics.

Each of the different shapes provides a slightly different spread and angle of light, from the almost 360-degree spread of a globe or golf bulb, to the narrow beam of a spotlight. The 'right' shape of the seedling and spread of the light is essentially down to your personal preference, but consider how the bulbs will look when they're switched off too every bit on, and whether they will fit sensibly in their chosen location. For example, yous wouldn't want a large stick shape if it will beetle from the pinnacle of your bedside lamp.

ii. Don't be put off by the upfront cost of LED lights

LED light bulbs could relieve yous hundreds of pounds in the long run.

A typical 700+ lumen LED seedling will cost y'all around £i.71 a year, based on 3 hours of use every day. For a CFL alternative that would be £two.04, or £8.42 if y'all use an existing halogen seedling.

3. Go the right light seedling effulgence and color

Watts and lumens (brightness)

Since the introduction of energy-saving bulbs, wattage is a less useful measure of effulgence, as new bulbs use a lot less power to produce the aforementioned amount of light. So, instead, light output is measured in lumens. The higher the number of lumens, the brighter the calorie-free.

As a rough guide, around 400 lumens would typically be suitable for a bed-sized tabular array lamp, whereas y'all might want between one,500 and 3,000 lumens in full (from more than one seedling) for a expert-sized living room.

Kelvin scale (colour)

The colour of light is measured on the Kelvin scale, which is actually a measure of temperature. This is why calorie-free bulb manufacturers often refer to 'color temperature' on the packaging. The numbers you see on the side of the seedling packet denote the colour of light that the bulb will emit.

Most people accept become used to the warm, yellowy light given out by the old incandescent bulbs, which is ii,700 on the Kelvin scale. Midday sunlight is about 5,500k, dusk or sunrise lighting is effectually two,500k and a candle is around 1,600k.

CRI (colour rendering index)

Every seedling is given a CRI score. CRI stands for color rendering alphabetize and is a measure of the ability of a light source to accurately represent different colours. Put simply, you desire to brand sure yous become a seedling that makes your tomatoes wait cherry, rather than a strange orangey colour.

Traditional incandescent and halogen bulbs have a well-nigh-perfect CRI and score in the high 90s. LEDs and CFLs are a piddling behind this and are more likely to have a CRI value in the mid 80s. 80 is considered an acceptable level, although similar many things it comes downward to personal preference.

The image below shows the impact of CRI – the left-hand prototype is shot under light with a CRI value of 100, while the image on the right has a CRI value of 80.

Where to purchase calorie-free bulbs

Several popular online retailers stock light bulbs.

Amazon has a massive selection of light bulbs, including budget-priced smart bulbs and energy-efficient LED multipacks.
Argos sells a selection of calorie-free bulbs split by category: Edison spiral (ES), bayonet (BC), minor Edison spiral (SES), GU and smart bulbs.
B&Q has a mix of LED bulbs, decorative LEDs and smart bulbs.
Ikea has hundreds of low-cal bulbs to cull from, including £2 LEDs besides equally internet-continued bulbs that alive within the brand's Ikea Home Smart ecosystem.
Lightbulbs Direct offers a broad selection of LEDs and CFLs.
Screwfix sells regular LED lights alongside smart light bulbs from large-proper noun brands including Hive, Philips Hue and TCP.

Find out which retailers are rated highly by Which? members with our expert guide on the all-time and worst shops.

How to dispose of your sometime light bulbs

CFL bulbs – If y'all want to become rid of an old CFL bulb, avoid chucking it in with your regular rubbish. CFL bulbs contain tiny amounts of mercury, which means they'll need to go to a recycling middle or one of your local recycling driblet-off points.
LED bulbs– These terminal a long fourth dimension, and then you shouldn't demand to become rid of i often. If one of yours finally conks out , you can just chuck the seedling in your normal household waste. Bear in mind that warranties on LED bulbs typically final betwixt two and four years, so if the bulb fails within this time you should exist able to become your coin back. Bank check the box for details, and contact the retailer or the manufacturer's client service department.
Halogen bulbs – These aren't recyclable because they contain a series of fine wires which are difficult to separate out. Wrap the bulb in case it shatters, so put it with your normal household waste.

For more than details on getting rid of your old electronics, come across our adept guide onhow to recycle electrical items.

Practise CFL light bulbs pose a health risk?

CFL light bulbs have been anecdotally linked with certain wellness conditions – here's what we know almost them.

Practice energy-saving CFL light bulbs cause cancer?

The Health Protection Agency (HPA) issued a warning in October 2008 nearly some free energy-saving low-cal bulbs emitting college levels of UV radiation than guidelines suggest is safe.

It suggests, as a precaution, that spiral and tube-type free energy-saving CFL light bulbs shouldn't be used for more than than one hour a day if y'all're less than 30cm away from the bulb, such every bit a desk-bound lamp. Instead, you should switch to globe-style bulbs, or move the lamp further away.

The HPA is neat to bespeak out that CFL calorie-free bulbs won't directly crusade peel cancer. But sitting very shut to a light bulb that emits more the recommended amount of UV light has similar furnishings to going outside on a sunny day – so some caution is recommended.

There's no need to panic and supplant all your CFL lite bulbs.

Can CFL calorie-free bulbs trigger epilepsy?

The charity Epilepsy Activity has some anecdotal reports from people who believe ill effects, such as headaches and dizziness, have been caused by energy-saving low-cal bulbs.

It has said: 'Epilepsy Action isn't aware of whatsoever evidence that low-energy calorie-free bulbs can straight trigger epileptic seizures in people with photosensitive epilepsy. All the same, we have been contacted by a number of people with epilepsy who believe that energy-saving low-cal bulbs have impacted on their condition.

'Nosotros aren't able to quantify how many people with epilepsy are affected by these bulbs, or say definitively how energy-saving low-cal bulbs may bear on people with epilepsy. We're asking the government to ostend that ordinary light bulbs will even so be available for people with epilepsy, should they have concerns well-nigh the apply of energy-efficient low-cal bulbs and their epilepsy. We will continue to monitor the state of affairs.'

Practice CFL light bulbs crusade migraines?

Some migraine back up groups, such as the Migraine Activity, have raised this as a concern.

The Department of Health has said in response: 'The Department is aware of business from migraine support groups that the utilize of some energy-saving light bulbs could potentially bear on migraine sufferers. We're continuing to work with clinicians and support groups regarding the nature and extent of any reported health effects, and bring influence to bear where appropriate.'

Although we're still to see concrete evidence linking CFLs with migraines, if you suffer from migraines you might wish to attempt a different type of seedling. Standard painkillers might barely scratch the surface of a migraine, merely they can be effective with more minor aches and pains, every bit long as yous selection the correct type.

Detect out which works best for unlike ailments with our expert guide to the best painkillers: aspirin, ibuprofen or paracetamol?

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Source: https://www.which.co.uk/reviews/light-bulbs/article/how-to-buy-the-best-light-bulb-a5ZLF4v6VDlw