If you grew up with the familiar A+, A++ and A+++ lighting labels, then you might have noticed in your recent purchases something different on the packaging of your LED bulbs. In their place, you now see a simple A to G scale.
This change has left many people wondering: What does A-rated actually mean now? Are all A-rated lights the same?
Under the new system, an A-rated LED bulb is extremely energy efficient. In fact, it’s far harder to get an A than it used to be.
Especially for first-time buyers, all of these can get complicated and overwhelming.
That’s why in this guide, we’ll explain:
- What the new A rating really means
- How much energy A-rated bulbs can save
- Whether they are worth paying extra for
We’ll also use three of our recommended A-rated LED bulbs to help you better understand the new rating system.
7.2W B22 GLS LED Bulb – A Rated Filament Style
7.2W LED Lamp GLS Filament E27 Screw – Warm White
3.8W LED Bulb B22 GLS Filament – Cool White
The New Energy Rating Scale Explained
Why Did the Energy Labels Change?
The old system worked for a few years… until it didn’t. So, what happened?
The scale became crowded at the top, which made it confusing for buyers. Under the old system, almost every LED bulb was rated A+, A++ or A+++. If nearly everything was “A+”, how could you tell what was truly efficient?
To fix this, the EU and UK reset the system back to a simple A to G scale, while enforcing stricter criteria. An A rating today represents the highest level of energy efficiency currently achievable. Many products that were previously A++ are now rated C or D under the new rules.
In short, the bar has been raised.
What Does “A-Rated” Actually Mean?
An A-rated LED bulb is among the most energy-efficient available. It produces more light per watt of electricity used. To understand this properly, you need to know three simple terms:
- Lumens – This measures brightness. The higher the lumens, the brighter the bulb.
- Watts – This measures energy use. The lower the watts, the less electricity the bulb consumes.
- Lumens per watt – This measures efficiency. It shows how much brightness you get for each watt of energy used. The math is simple: Lumens per watt = Lumens ÷ Watts
The higher the lumens per watt, the more efficient a light is. An A-rated bulb delivers very high lumens per watt, which means strong brightness with minimal power consumption.
Disclaimer: Being A-rated does not automatically mean the bulb is brighter. It means it is more efficient at producing brightness. So, always check the total lumens when looking for a bright bulb. When choosing a bulb, it helps to understand the basics of selecting LED lighting properly.
Top Picks for the Brightest A-Rated LED Bulbs
Here’s a more detailed view of the recommended lighting products we mentioned earlier:
7.2W B22 GLS LED Bulb – A Rated Filament Style
This is an exceptionally bright bulb for just 7.2 watts. Producing 1521 lumens, it delivers strong, crisp illumination suitable for task-heavy areas with a stunning efficacy of 211.25 lumens per watt.
The 6500K cool white light provides a sharp, daylight-like appearance. Combined with a wide 320-degree beam angle, it spreads brightness evenly across the room.
This bulb is best for kitchens, utility rooms, garages, and workspaces.
Expert tip: Choose cool white for areas where clarity and visibility matter most, such as food preparation zones (worktops) or detailed tasks. Also, make sure you have a fixture that has a B22 lamp holder.
7.2W LED Lamp GLS Filament E27 Screw – Warm White
This LED bulb offers the same impressive 1521 lumens as the B22 bulb. Wattage is the same at 7.2W, which means that efficiency is also at 211.25 lumens per watt. The only difference? It comes in a warm 2700K colour temperature.
Warm white light has a softer, golden appearance. It feels comfortable and welcoming, making it ideal for living areas where atmosphere matters. The wide 320-degree beam angle ensures even room coverage without dark patches.
This light bulb is best for living rooms, bedrooms, and dining areas.
Expert tip: Despite having the same 1521 lumen output, the cool white LED bulb will still look brighter than this warm bulb, since brightness perception is higher with the colder colour temperature lights.
3.8W LED Bulb B22 GLS Filament – Cool White
This bulb proves that high efficiency does not require high wattage. At just 3.8 watts, it still produces 806 lumens. That’s an amazing 212 lumens per watt efficacy. That makes it ideal for areas where lights stay on for long periods. It delivers practical brightness while keeping energy use extremely low.
This light bulb is best used in hallways, landings, secondary rooms, or multiple-bulb fittings (like chandeliers or pendants).
Expert tip: For multi-bulb ceiling fittings, lower-wattage A-rated bulbs can dramatically reduce total electricity use.
How Much Money Can A-Rated Bulbs Save?
It’s time to look at practical examples. Don’t worry, the maths is simple; even fifth graders will understand how much savings A-rated LED bulbs can make you.
For these examples, assume electricity costs 27p (£0.27) per kWh (UK average at the time of writing).
A traditional 60W incandescent bulb used for 5 hours per day costs:
- 60W x 5 hours x 365 days ÷ 1000 = 109.5 kWh per year
- 109.5 x £0.27 = £29.57 per year
Now compare that to a 7.2W A-rated LED:
- 7.2W x 5 hours x 365 days ÷ 1000 = 13.14 kWh per year
- 13.14 x £0.27 = £3.55 per year
That’s a saving of over £26 per bulb per year. Over 5 years, that’s about £130 saved from just one fitting. And when you apply this across your entire home using efficient lighting throughout, the long-term savings can be surprisingly substantial.
In high-use rooms like kitchens, living rooms, or home offices, the savings multiply quickly. If you have 10 frequently used bulbs in your home, the long-term savings on energy bills become significant.
Where A-Rated Bulbs Make the Most Difference
Here’s an interesting fact: Savings increase the longer the A-rated lights are on each day. This is because electricity costs are based on how much power is used over time (time x power). An A-rated LED uses far fewer watts than a traditional bulb, so every hour it runs, it consumes significantly less energy. The more hours per day a light is switched on, the bigger the gap in electricity use becomes.
That’s why A-rated bulbs matter most in high-use areas like kitchens, living rooms, and offices.
Kitchen & Utility Rooms
These spaces often have lights running for a long time for food prep and cooking. An A-rated cool white bulb ensures strong task lighting while keeping running costs low.
Living Rooms
Living rooms combine ambience with extended usage. Evenings, weekends, and winter months (longer nights) can mean many hours of daily use. Warm white A-rated bulbs deliver comfort and efficiency.
Office Spaces
Home offices and commercial workspaces require reliable lighting for productivity. This often means longer operating hours. Bright, efficient A rated bulbs reduce electricity consumption.
Commercial Settings
In retail shops, salons, and reception areas, lighting often runs all day. Switching to A-rated bulbs can significantly cut operational costs over time.
Are A-Rated Bulbs Worth It?
Many people find the idea of upgrading to A-rated LED lights a little overwhelming for one reason: upfront cost. Which is the case for most LED lights. Replacing 30 to 50 light bulbs is a significant investment that not everyone is ready to do right off the bat.
However, when you look at the running cost compared to their traditional counterparts, it is significantly lower. LED bulbs also typically last 15,000 to 25,000 hours, with some even reaching 50,000 hours. That means fewer replacements over time, dramatically reducing costs.
A-rated LED bulbs also reduce carbon emissions due to lower energy consumption. This is perfect for hitting environmental goals.
Common Misunderstandings About A-Rated Bulbs
Despite all the good things about A-rated lights, there are a few myths worth clearing up.
A Rated Does Not Mean Brighter
We want to make this clear. Brightness is measured in lumens. The rating reflects efficiency, not light output. An A-rated bulb can be 800 lumens or 1500 lumens, so always check that when choosing lights.
Wattage Does Not Equal Brightness
This is an old concept that’s not relevant to modern lighting. With LED technology, wattage only shows energy use. A 7W LED can produce the same light output as a traditional 60W bulb.
A-Rated Does Not Affect Colour Temperature
As evident with the above recommended lights, you can get A-rated bulbs in warm white, natural white, or cool white. The energy rating does not change the light colour.
Not All LEDs Are A-Rated Under the New Scale
Many LEDs now fall into B, C, or D categories under the stricter system. An A rating represents the top tier of efficiency available today.
Should You Switch to an A-Rated LED Bulb?
Under the new energy label system, an A rating means top-level efficiency. These bulbs:
- Deliver excellent lumens per watt efficiency
- Reduce electricity costs significantly
- Perform best in frequently used rooms
If you want high brightness with minimal energy waste, A-rated LED bulbs are one of the smartest lighting upgrades you can make.
For kitchens, living rooms, offices, and commercial spaces, they combine performance, savings, and sustainability in one simple solution. And in today’s energy-conscious world, they’re the bright choice that makes perfect sense.
Frequently Asked Questions
What is the difference between A and A+ light bulbs?
The old A+, A++ system is retired. Under the new A-G scale, A is harder to earn than the old A+.
Are A-rated light bulbs brighter?
Not necessarily. Brightness is based on the total lumen output. An A-rated bulb is more efficient, with high lumen-per-watt ratings, but you must check the lumen output for brightness.
Why are A-rated bulbs more expensive?
Manufacturing higher-efficiency LEDs and better drivers costs more. But this extra expense is usually offset by lower energy bills and a longer lifespan.
How long do A-rated LED bulbs last?
LED bulbs generally last 15,000-25,000 hours. If you use them for only 5 hours per day, they can last up to 14 years.
Are A-rated bulbs worth it?
Yes, especially where lights are used for many hours each day. They often pay for themselves within a few years through energy savings alone.
