Whether you’re upgrading your lighting or moving into a new home, choosing the right light bulb fitting is probably not high on your priority list. But believe me, knowing your fittings can save you money, time, and a few headaches down the line. From bayonet caps to screw-in types, there’s a world of fittings out there—and not all bulbs fit in every socket! In this guide, we’re breaking it down South African style to help you make smart, stylish and functional lighting choices.
Key Takeaways
- Light bulb fittings vary by shape and base type — the most common in SA are B22 (Bayonet) and E27 (Edison Screw).
- Selecting the right fitting is essential for compatibility and safety.
- Always double-check wattage and voltage to ensure bulbs match your fittings.
- Smart bulb fittings and dimmable options give you even more control over your space.
- Lighting can be both practical and decorative — pair the right fitting with the perfect fixture.
- Future Light stocks a wide range of LED bulbs to suit all fittings.
Understanding the Different Types of Light Bulb Fittings
You’re not alone if you’ve stood staring at rows of bulbs wondering which one to buy. The type of fitting needed mostly depends on your light fixture. The two most common types you'll see in South African homes are:
B22 – Bayonet Cap
This is your good old twist-and-lock fitting. It’s been around forever and is likely what you have in most older ceiling lights. Simply push the bulb in and twist clockwise until it locks. They're known for being secure and less likely to loosen than some screw fittings.
E27 – Edison Screw
The E27 (or ES) is a screw-in fitting and it’s becoming more and more common. These fittings are super easy to work with—you literally just screw the bulb in. Modern furnishings and designer lights often use this type of fitting because it provides a cleaner look.
Other Fittings You Might Come Across
Besides B22 and E27, you’ll occasionally bump into:
- GU10 – Common in downlights. Twists in and locks, works well with LED downlights.
- MR16 – A low-voltage option, frequently found in specialised or accent lighting setups.
- G4 or G9 – Used in smaller, decorative fittings like some LED pendants or desk lamps.
Fitting Functionality: More Than Just Matching Shapes
While the physical match between bulb and fitting is vital, don’t forget about voltage compatibility, dimming functionality, and whether or not your fitting supports smart bulbs.
One of our favourite things at Future Light is pairing style with function. That means recommending fittings that do a bit more—like motion sensing or colour tuning. If you're tinkering with smart home tech, be sure to check out our Smart Life home automation range for bulbs that can talk to Alexa or Google Assistant.
“Pro tip: If you're planning on switching to LEDs, make sure the fitting can handle them. Older dimmers often don’t play nicely with LED bulbs and may require an upgrade.”
Get the Most Out of Your Light Fixtures
Light bulb fittings directly influence not only what kind of bulb you can use, but how your whole space feels. A poorly-matched bulb can affect brightness, colour temperature and even energy efficiency.
Choosing Fittings Room by Room
If you're doing a room revamp, think about the vibe you want. Warm light in the bedroom? Go for E27 fitting LED filament bulbs. Highlighting a kitchen top with under-counter lights? Consider GU10s for directional beam control. Outdoor areas? Waterproof fittings designed for LED bulbs are your go-to—especially paired with solar lighting options.
“Choose fittings with a dimming feature in living rooms or dining spaces to set just the right ambience. Combine them with LED dimmable bulbs for energy-friendly flexibility.”
Mounting and Maintenance Made Easy
Let’s face it, no one wants to be up a ladder every other week. The beauty of matching the right bulb to the right fitting is a longer lifespan and better performance. Modern LED bulbs are not only energy-efficient but far more durable when appropriately fitted.
Make installation even smoother with purpose-built products like the LED Bathroom Downlight Holder with GU10 Fitting. This is a clever piece of kit specially designed for damp areas and works fantastically with LED downlights. It’s a clean and safe choice for spaces like bathrooms and laundry rooms.
Conclusion
Choosing the right light bulb fitting isn’t about making your life complicated; it’s about making it easier and better lit. Armed with this info, you can shop smart, use your space better, and avoid costly mistakes down the line. Whether you’re browsing online or strolling down the aisles, understanding fittings helps you make lighting both beautiful and brilliant.
Still unsure about the right fit for your project? Our team is just a message away—pop over to our contact page and let’s chat about your lighting needs.
Frequently Asked Questions
What is the difference between B22 and E27 fittings?
B22 is a bayonet cap that twists and locks into place, while E27 is a screw-in Edison cap. Both are common in South Africa, and you’ll usually find B22 in older fittings and E27 in newer, more modern ones.
Can I use an E27 bulb in a B22 fitting?
Not directly, but you can use an adaptor. However, it’s always better to use a bulb that matches the original fitting to ensure safety and performance.
Do LED bulbs fit in all light fittings?
Most LED bulbs come in standard fitting sizes like B22, E27 and GU10. As long as the base matches and the voltage is compatible, you're good to go.
How do I know which bulb fitting I need for my fixture?
Check the base of the old bulb or look at the fixture itself. It usually indicates the required fitting. If unsure, snap a pic and compare it online or ask our team for assistance.
Are smart bulbs available with E27 or B22 fittings?
Yes! Many smart LED bulbs come in E27 and B22 fittings. Just make sure your fitting is compatible and you have the correct smart hub or app to manage the bulb.
