Which Dimmer Switch Works with LiquidLEDs Bulbs?
Not all dimmer switches work well with LED bulbs. Using the wrong dimmer is the most common cause of flickering, buzzing and poor dimming performance. This guide explains what to look for, and what to avoid.
The Short Answer
LiquidLEDs bulbs are compatible with modern LED trailing-edge (capacitive) dimmers. The easiest and most reliable option is our own Pixie Dimmer, which is specifically designed and tested with our full range.
Trailing-Edge vs. Leading-Edge Dimmers
| Type | Also Called | Works with LED? | Notes | |---|---|---|---| | Trailing-edge | Capacitive, ELV | Recommended | Designed for low-load LEDs, smooth dimming, quiet | | Leading-edge | TRIAC, phase-cut, resistive | Sometimes | Designed for halogen/incandescent, can cause flicker or buzz with LEDs | | 0-10V / DALI | Commercial dimming | Yes (specific products) | For commercial/architectural applications |
If you are replacing an older dimmer that was installed for halogen or incandescent bulbs, it is almost certainly a leading-edge dimmer and should be swapped out for a trailing-edge model.
Why Incompatible Dimmers Cause Problems
Leading-edge dimmers work by "chopping" the AC power wave in a way that halogen and incandescent elements can handle easily. LED drivers are more sensitive to these interruptions, which can cause:
- Visible flickering, especially at lower dim levels
- Buzzing or humming from the bulb
- Limited dimming range (e.g., only dims down to 40-50% before flickering)
- Reduced bulb lifespan in some cases
Minimum Load Requirements
Many dimmers have a minimum load rating. For example, a dimmer rated for "20W-300W" needs at least 20W of connected load to operate correctly. Because LED bulbs draw very little power, a single LED bulb may fall below the dimmer's minimum load and cause flickering.
What to do: Choose a dimmer with a low minimum load rating (0W or 1W), or use multiple bulbs on the same circuit to raise the total load.
The Pixie Dimmer is designed with LED minimum load in mind and works reliably with as little as a single LiquidLEDs bulb.
What About Smart Dimmers?
Smart Wi-Fi or Zigbee dimmers (such as those from Lutron, Clipsal, or C-Bus) can work with LiquidLEDs bulbs, provided they are rated for trailing-edge / LED operation. Always check the manufacturer's compatibility list before installing.
The Pixie Dimmer: Our Recommended Choice
The Pixie Dimmer is LiquidLEDs' own smart dimmer switch, designed from the ground up for LED performance. Key features:
- App control: adjust brightness from your phone via the Pixie app
- Scene setting: save favourite brightness levels
- Low minimum load: works reliably with a single LED bulb
- Smooth dimming: no flicker, no buzz, full dimming range from 100% down to ~1%
- Australian standard: designed for standard Australian switch plates
Browse the Pixie Dimmer at liquid-leds.com.
Still Having Dimming Issues?
If your bulbs are flickering or buzzing with a dimmer, see our article: My Bulbs Do Not Turn On With My Pixie Dimmer at Low Settings.
For further help, contact our team or call +61 2 8880 9033 (weekdays 8am-6pm AEDST).