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LED Downlight 90mm – A Complete Buying Guide

LED Downlight 90mm – A Complete Buying Guide

Last updated on December 12, 2023

An LED downlight is a great way to save energy and money. LED downlight is very efficient and can last up to 50,000 hours. They emit very little heat and are cool to the touch. LED downlights are available in a variety of sizes in the online store, but the most popular size is the 90mm downlight.

Fixed LED downlight for ceiling

LED downlights are also available in different colour temperatureses, so you can choose the perfect light for your space. Led downlights are dimmable, so you can create the perfect ambience for any room. Led downlights are a great way to save energy and money. They last longer and use less energy than traditional incandescent bulbs.

LED colour temperature Chart
Color Temperature Chart. Credit:Klmlighting

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LED Downlight Spacing Guide

When it comes to choosing the right size for your space, the most important factor to consider is the spacing between the downlights. They are available in a variety of sizes, but the most popular size is the 90mm downlight.

The spacing between these downlights should be no more than 90mm apart. This will ensure that the light is evenly distributed and there are no dark spots in your space.

Downlight spacing chart

If you have a larger space, you may want to consider downlights with a 100mm spacing. Such downlights with a 100mm spacing will provide more light and coverage than those with a 90mm spacing.

Rule of Thumb spacing method

The rule of thumb is a general guideline that can be useful when considering how to space your LED light fitting. However, it is important to use caution when relying on this rule, as there are a number of factors that should be taken into account when determining the ideal spacing for your particular situation.

These factors include the wattage of the bulbs, the size of the room, the purpose of the lighting, and the overall décor. By taking all of these factors into consideration, you can ensure that your LED lighting is installed in an effective and attractive manner.

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    Spacing criteria method

    The spacing criteria value is determined by the following properties: 

    • The number of LEDs in the fixture
    • The beam angle of the LED 
    • The lumen output of the LED
    • The reflector type used in the optical design 
    • The spacing between the LEDs 

    Depending on these values, you will have to space your LEDs a certain distance apart. As a general rule of thumb, the lower the spacing criteria value, the further apart you will have to space your lights.

    For example, if you are using 50 watt LEDs with a beam angle of 60 degrees and a spacing criteria value of 1.2, you will need to space your LEDs 1.2 feet apart.

    Is a dimmer recommended for a 90mm downlight?

    For a 90mm downlight, a dimmer is not necessary but it is recommended. A dimmer will allow you to control the amount of light that is emitted from the downlight. This can be helpful if you want to create a specific ambience in your space.

    Also see: The 10 best dimmer switches

    The downlights are available in a variety of colour temperatures, so you can choose the perfect light for your space.

    Dimmer switch for LED light

    The Diginet MEDM Adaptive Phase Dimmer switch is designed in Australia to provide optimised dimming of LED

    Buy DimmerGet a Complete LED Upgrade

    What is the difference between a 90mm and 100mm downlight?

    The main difference between a 90mm and 100mm downlight is the size of the light. A 90mm downlight is smaller in size and emits less light than a 100mm downlight.

    How many LED downlights do I need?

    The number of downlights you need will depend on the size of your space and the amount of light you want to emit. For a small space, you may only need two or three downlights. For a large space, you may need four or more downlights.

    How do I install 90mm LED downlights?

    LED light fitting is a simple process. LED downlights come with all the necessary hardware and instructions.

    • Start by finding the centre of your space. This is where you will install your first LED downlight.
    • Drill a hole in the ceiling that is big enough for the LED downlight to fit through.
    • Insert the LED downlight into the hole and screw it into place.
    • Repeat this process for each LED downlight you are installing.
    • Once all the LED downlights are installed, turn on the power and enjoy your new space!

    What is the standard downlight size?

    The standard size for a LED downlight is 90mm. The most common downlight cut-out size is 90mm. When it comes to downlights, the cut-out size is an important consideration. The most common size is 90mm, but the smaller size of 70-75mm offers a more sleek appearance.

    However, it is harder to install, as your electrician will struggle to get his/her hand through the hole to make the connection. If you are looking for a more discreet look, then the smaller size cut-out is the way to go. However, be aware that it may take longer to install and may require a more experienced electrician.

    How do I know what size downlight I need?

    The size of the LED downlight you need will depend on the size of your space and the amount of light you want to emit. For a small space, you may only need two or three LED downlights. For a large space, you may need four or more LED downlights.

    Also see: FREE LED replacements for just a $33 electrician fee

    Are 90mm downlights and 90mm recessed lights the same?

    No, a 90mm downlight is not the same as a 90mm recessed light. LED downlights are designed to be installed on the ceiling, whereas recessed lights are designed to be installed on the wall.

    Best 90mm LED Downlights You Can Buy


    1. HALO LED Downlight From Teknik

    While Colour HALO LED Downlight From Teknik

    The HALO is a high-quality 90mm LED downlight that is perfect for a variety of applications. Its versatile design allows for 30 degrees of angle adjustment, making it easy to customize the light output to meet your specific needs. In addition, the advanced front lens helps to reduce glare and ensure optimal illumination.

    The IP65 body makes the light suitable for both indoor and outdoor use, and the sleek design is sure to complement any space. If you are looking for an LED downlight that is stylish and functional, the HALO is the perfect option. Teknik offers a 3-year warranty on all of its products, ensuring that customers will be satisfied with their purchase.

    If a product fails or becomes defective under normal use within this time period, Teknik will replace it free of charge. This warranty is in addition to the statutory rights that consumers have under applicable law.

    Important features

    • Switchable tri-colour (3000K, 4000K and 5000K)
    • Range of wattage and size options
    • Flex and plug 0.8m

    2. LUNA] Tri-Colour Combo Downlight – Emerald Planet

    Luna downlight white colour

    The Luna Downlight is a highly efficient and versatile lighting option, perfect for both residential and commercial settings. With a variety of cut out options and wattage models, the Luna Downlight offers the flexibility to match existing lighting colours or provide your customers with additional options.

    The convenient switchable tri colour temperature technology makes it easy to create the perfect atmosphere for any setting, and the durable construction ensures long-lasting performance. Representing exceptional value for money, the Luna 90mm Downlight is an ideal choice for any installation.

    Important features

    • Market-leading and highly versatile
    • Advanced front lens designed to reduce glare
    • Can be installed in both interior and exterior applications

    3. Philips Tri-Colour LED Downlight 7.5W Dimmable LED (90mm)

    Phillips white colour downlight

    The Philips Tri-Colour LED Downlight is a high-quality and stylish lighting option that is perfect for any installation. Featuring a sleek design and advanced front lens, the downlight provides optimal illumination while reducing glare.

    The IP65 body makes the light suitable for both indoor and outdoor use, and the switchable tri colour temperature technology allows you to create the perfect atmosphere for any setting. In addition, the Philips Tri-Colour LED Downlight is dimmable, making it easy to customize the light output to meet your specific needs.

    This product comes with a 3-year warranty, ensuring that customers will be satisfied with their purchase. Get it today from your nearest store.

    Important features

    • Save up to 80% on energy costs compared to traditional lighting
    • 3000K, 4000K, and 5000K colour temperatures to choose from
    • Dimmable LED for the perfect ambiance
    • Robust IP54 rating makes it splash-proof
    • Available in a variety of settings

    4. Luce Bella 8W 90mm Tri-CCT LED Downlight

    Luce downlight white colour

    Luce Bella’s downlight features a selectable light colour switch, allowing the user to choose the desired light colour depending on the application. The integrated LED driver is suitable for use with trailing edge and universal dimmers.

    The downlight produces high lumen output (800lm) and is weather resistant with ingress protection IP44 (once installed). This downlight is ideal for use throughout the modern home.

    Luce Bella’s downlight is a versatile and stylish lighting solution that will bring a touch of class to any space. Luce Bella products are backed by a 2-year warranty, giving you peace of mind that your purchase is of the highest quality.

    Important features

    • 8W, 800lm
    • Selectable colour temperature
    • IP44 water-resistant
    • Suits 90 – 95mm cut out

    5. 90mm LED downlight by Havit Lighting

    Havit Lighting is Australia’s leading lighting wholesaler, and they have just released a new LED downlight that is sure to revolutionize the market. The downlight has been designed with Havit’s signature quality and attention to detail, and it is already being lauded as one of the best on the market.

    The light is made with high-quality materials, and it uses only the best LED chips and drivers. This means that you can be sure that your downlight will last for years to come. In addition, Havit Lighting offers an industry-leading warranty on their products, so you can be confident that you are making a wise investment.

    If you are looking for a high-quality, long-lasting LED downlight, then Havit Lighting is the brand for you.

    Important features

    • Long-life LED – 50,000 Hours with 5 years warranty
    • Fully dimmable
    • Bright and power saving
    • Easy Install – Flex and plug included for plug and play install.

    6. HPM DLI 7W 90mm LED Dimmable Downlight

    HPM Dimmable downlight

    Looking for an energy-efficient way to light up your home? Check out these HPM fixed downlights. These lights produce 820 lumens of cool white light while only using seven watts of power, making them a great choice for those looking to save on their energy bill.

    They’re also compatible with trailing edge dimmers and have a low ceiling depth, so you can easily install them in your home. Plus, they’re Insulation Contact – Fire Resistant (IC-F), so you can safely install them in areas where building insulation is exposed to 90oC. Give these HPM fixed downlights a try for your next lighting project!

    Important features

    • IP44 rated
    • Fitted with 1m flex and plug
    • Integrated dimmable LED driver compatible with trailing edge dimmers
    • Low ceiling depth, suitable for slab canisters
    • Suitable for 90mm cut-outs

    90mm LED Downlight Installation In Sydney


    Are you looking for a team of reliable and experienced electricians to install LED downlights in your home? If so, our authorized electrical business in Sydney can help.

    We understand that having work done on your home can be stressful, which is why we take care to treat your property with respect. We also pride ourselves on being punctual and efficient, so you can be sure that the job will be done right the first time.

    Energy Consumption Vs. light output chart

    It’s important to have a quality lighting system in our homes. Not only does it improve the aesthetic of our space, but it also can save us money on our energy bills. If you’re looking for a way to upgrade your home’s lighting, consider switching to LED downlights.

    LED downlights are a type of lighting that is becoming increasingly popular due to their many benefits. Not only are LED downlights more energy-efficient than traditional halogen downlights, but they also last longer, emit less heat, and are available in a variety of colours and styles.

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      Anything else you would like to ask us regarding our services and offers? Please feel free to get in touch and our friendly staff will assist you.

      COMPLETE LED LIGHTING UPGRADE

      From $33*
      Energy Saver is an initiative proudly funded by the NSW Government

      If you’re looking for a way to upgrade your home’s lighting system, switch to LED downlights today! $33 Only For entire home, no hidden cost! Learn More

      What are the benefits of upgrading downlights under NSW Energy Saving Scheme?

      NSW homeowners and businesses can save money on their electricity bills by upgrading to energy-efficient lightings, such as LED downlights.

      Under the NSW Energy Saving Scheme (ESS), eligible customers can receive a discount on their electricity bills when they upgrade to energy-efficient lighting.

      In addition, the ESS also offers rebates for businesses that install energy-efficient lighting. So if you’re a business owner, you could save even more money by upgrading to LED downlights!

      Not only will you save money on your electricity bills, but you’ll also be helping the environment by reducing your carbon footprint. So switch to LED downlights today and start saving money

      Exciting benefits of NSW LED Upgrade scheme

      • The cost of upgrading is subsidised by the NSW HEER scheme
      • All products are HEER approved and have gone through Australian Testing
      • Guaranteed to save you up to 80% of your lighting cost
      • 2-3 year product warranty on all our downlight upgrades
      • 12-month labour warranty for all our complete downlight upgrades

      Frequently Asked Questions

      What is a tri colour downlight?

      A tri colour downlight is a type of LED downlight that can produce three different colours of light – warm white, cool white, and daylight.

      What is the difference between warm white and cool white downlight?

      Warm white downlights emit a soft, yellowish light, while cool white downlights emit a brighter, whiter light. The warm white is around 3000K while the cool white is around 5000K

      What is the difference between a GU10 and an MR16 downlight?

      GU10 downlights are designed to be used with GU10 light bulbs, while MR16 downlights are designed to be used with MR16 light bulbs.

      How do I know if my downlight is compatible with a dimmer switch?

      If your downlight is compatible with a dimmer switch, it will be marked as “dimmable” on the packaging.

      What is the difference between an IP44 and an IP54 downlight?

      IP44 downlights are designed for indoor use, while IP54 downlights are designed for both indoor and outdoor

      What is a dimmable LED?

      A dimmable LED is an LED light that can be used with a dimmer switch to create different levels of lighting in a room. Dimming an LED light can save energy and help to create the perfect ambience in any space.

      Also read;

      e-green electrical logo image

      E-Green Electrical

      E-Green Electrical is a top tier energy efficiency company based in Sydney. We focus on utilising government rebates to help reduce our clients energy consumption by installing energy efficient solutions. E-Green boasts a rich heritage within the realm of energy efficiency, consistently staying up to date with cutting-edge technologies to deliver optimal results for our valued customers.

      We don't just sell products and services; we also provides tips and information on how to help reduce energy consumption. We believe in using energy wisely and teaching others how to do the same. For E-Green, it’s important to share knowledge with the community. That's why we regularly write articles about saving energy, new government rebates available and increasing sustainability.

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