Question 1

What is the difference between a round and a square downlight?

Accepted Answer

The main difference is aesthetic and relates to integration with the ceiling. A round downlight is more neutral and versatile, so it fits well in almost any room. A square downlight provides a more geometric aesthetic and is often used in spaces with straight lines or a more architectural design. In terms of lighting, both can offer similar results if they have the same flux, wattage, optic, colour temperature and driver quality. The external shape alone does not determine the amount of light.

Question 2

Are round downlights better for renovations?

Accepted Answer

In many renovations, yes, they are more practical, because many older recessed fittings used round cut-outs. This makes it easier to find LED models compatible with the existing opening and reduces the need to modify the suspended ceiling. Even so, the real cut-out diameter and available depth should always be measured before choosing the new downlight.

Question 3

What cut-out diameter do I need?

Accepted Answer

It depends on the model and the available opening. Small cut-outs can range from 60 to 90 mm, medium ones from 120 to 180 mm, and large ones above 200 mm. In replacements, measuring the visible bezel of the old fitting is not enough. It is advisable to check the real ceiling opening, because the external diameter is usually larger than the cut-out diameter.

Question 4

What colour temperature should I choose for round downlights?

Accepted Answer

For living rooms and bedrooms, 2700K or 3000K provide warm and comfortable light. For bathrooms, kitchens and work areas, 4000K provides greater clarity. For garages, storage rooms or technical spaces, 5000K can be used if a cooler light is desired. The important thing is to maintain consistency within the same room or visual area. Mixing temperatures without planning can create an uneven result.

Question 5

Can I install round downlights in the bathroom?

Accepted Answer

Yes, provided they have the appropriate IP rating for the area. In areas away from splashes, IP44 may be sufficient, while near a shower or bath IP65 is recommended, in accordance with the applicable electrical regulations. It is also advisable to choose a suitable colour temperature and CRI, especially if the bathroom is used for make-up, shaving or personal care.

Question 6

How many round downlights do I need in a living room?

Accepted Answer

It depends on the surface area, the output of each fitting and the desired lighting level. As a reference, a living room may require between 150 and 250 lux for general lighting. For example, a 20 m² living room with a target of 200 lux needs around 4,000 useful lumens. If each downlight provides 800 lm, around five points could be installed, adjusting the layout according to furniture and usage zones.

Question 7

Are adjustable round downlights recommended?

Accepted Answer

Yes, when light needs to be directed towards a specific area. They are useful for highlighting walls, pictures, shelves, reading areas or products in shops. For general lighting, fixed models usually provide a simpler and more uniform distribution. In many spaces, combining both types works well.

Question 8

What beam angle is best?

Accepted Answer

For general lighting, angles between 90° and 120° are usually the most comfortable. For accent or decorative lighting, narrower angles between 24° and 60° can be used. In low ceilings, a narrow angle can create overly marked light areas. In high ceilings, a wide angle can disperse the flux too much.

Question 9

Can round downlights be dimmed?

Accepted Answer

Yes, provided the model is dimmable and the dimmer is compatible with LED. If a non-dimmable downlight is connected to a dimmer, flickering, buzzing or operating faults may occur. Dimming is especially useful in living rooms, bedrooms, hotels, restaurants and spaces where the light intensity needs to be adapted to the atmosphere.

Question 10

How long does a round LED downlight last?

Accepted Answer

The usual service life is between 25,000 and 50,000 hours, depending on the quality of the LED, driver and thermal dissipation. In a home with 4 hours of daily use, 25,000 hours is equivalent to more than 17 years of theoretical operation. In shops, offices or communal areas with many hours of use, it is advisable to choose models with good thermal management and reliable components to maintain performance in the long term.

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