Fittings and Lamps

There are many different light fittings, most of which have been designed to use the traditional incandescent light bulb. But that's not to say you can't use new energy efficient lamps to replace them. In any case, the number of new light fittings designed around energy efficient bulbs and lamps is growing by the day.

Here are the a few things to remember when choosing energy efficient replacements:

1. Choose the right replacement bulb wattage. To maintain existing light levels, use an efficient bulb that provides a similar light output (this should be clearly stated on the packaging). Never exceed the maximum wattage stated on the fitting.

2. Match the light colour to the bulb you're replacing. New generation halogen bulbs and halogen spotlights are a similar colour temperature to standard incandescent bulbs. Look for a CFL with 2700K or 3000K on the packaging (often called 'warm white') for a similar colour temperature.

3. If you can't see the light bulb, it doesn't matter what it looks like. The effect of the light and the light output is what is most important so in a covered fitting a standard CFL is likely to be the most cost effective way to maximise your energy efficiency.

4. Make sure the replacement bulb has the necessary features or functionality. To use a CFL on a dimmer circuit or in a high-switch area, choose one designed for this use. New generation halogen bulbs can be used anywhere a standard incandescent is used.

5. Check the base type. Make sure the base of the new bulb – whether it be bayonet or screw fitting - is the same as the one you are replacing. If you get it home and it doesn’t fit, don’t force it.

6. Just because it fits doesn't mean it is going to give you the light you need. Some fittings such as recessed ceiling lights may only work well with certain bulbs. Choose a replacement bulb that's similar to the original bulb's shape and size - such as the most appropriate new generation halogen bulb or reflector CFL. Alternatively, replace the fitting with one designed to take a the efficient bulb you want to use.

Which bulb fits which fitting?

Ceiling domes

Remember: if you can't see the light bulb, it doesn't matter what it looks like. CFLs can be used if they fit, but expect a reduced lifespan of the bulb if there is limited ventilation. Halogen reflector bulbs are another option but be cautious of the additional heat these produce and never exceed the maximum wattage for the fitting.

Table/standard lamps with lampshades

Any lamp fitted with a lampshade is a good candidate for a CFL or new generation halogen bulb. If you prefer a CFL, choose a 'cool daylight' type that is good for contrast (e.g. reading) or a 'warm white' that is good for relaxing. And don't forget to match the light colour and wattage of the bulb you're replacing.

Pendant lamps

If the bulb is visible, and appearance is an issue, use a covered or globe-type CFL or a new generation halogen bulb. And if you can't see it, a standard CFL should be fine. Planning on using a CFL on a dimmer circuit or in a high-switch area? That's fine but make sure you choose one designed for this purpose.

Exposed ceiling fitting

If the bulb is visible, and appearance is an issue, use a covered or globe-type CFL – there is an ever increasing range of decorative bulbs available – or a new generation halogen bulb. Otherwise a standard CFL should do. To maintain existing light levels, use an equivalent wattage efficient bulb and never exceed the maximum wattage for the fitting.

Concealed fittings (under pelmets)

Use a CFL if it will fit or a more energy efficient fluorescent tube. Remember: if you can't see the light bulb, it doesn't matter what it looks like. Otherwise consider upgrading the fitting to an LED if it fits within your budget.

Energy-saver down lights

Only use the recommended bulb with these fittings, whether it's a special or standard CFL.

Incandescent downlight fittings without built-in reflector

Never insert a standard CFL into these fittings as the light is likely to get trapped inside the fitting and provide poor light output. Here you can either use a reflector CFL that has been designed to replace the reflector bulb or new generation reflector halogen of similar size. Alternatively, it may be worthwhile considering replacing the fitting with one designed to take a CFL.

Halogens spotlights (commonly used in small downlights and display lighting)

Use the most energy efficient IRC halogen spot lights you can find. If the halogen spotlights are used for general room lighting, there are a number of CFLs designed to replace these downlights that come complete with fittings (note, choosing new fittings will require fitting by an electrician).

Recessed downlights in large areas

While some recessed downlights can accommodate CFLs and maintain good performance, most standard downlight fittings are designed to use inefficient incandescent bulbs or less efficient reflector lamps.  There are also potential downsides when it comes to lighting large areas if fittings are designed to direct light onto the floor and a large number of fittings is required to provide even lighting throughout a space.

The key to maximising efficiency is to choose purpose-designed energy efficient fittings where practical rather than just replacing standard incandescent bulbs with energy saver bulbs in existing fittings. 

If you choose to install recessed downlights, make sure they have been designed specifically to use energy efficient bulbs. By also selecting a product with a completely sealed design that allows insulation to be abutted directly to the fitting, you can maintain the overall efficiency of your home by ensuring the thermal envelope of the home is not compromised.  This is important as open-style downlights can allow heat to transfer between the room and the ceiling cavity, making heating and cooling your home less efficient.