Why Is My Bulb Flickering? Fix Dim-to-Warm LED Issues
By Ravenhill Studio | Published: 2026-10-28
Category: How-to Guides
Flickering dim-to-warm LEDs usually have simple fixes. Learn to diagnose the cause, check your dimmer, and know when to replace the bulb.
Quick Answer
Most flickering dim-to-warm LEDs are caused by an incompatible dimmer, loose connections, or a failing bulb. Start by checking your dimmer and connections before replacing the bulb.
Why Dim-to-Warm Bulbs Flicker
Dim-to-warm LEDs change color temperature as they dim, which requires more complex electronics than standard LEDs. This makes them more sensitive to dimmer compatibility and wiring issues.
A common cause is using an older dimmer designed for incandescent bulbs. These dimmers may not provide the correct minimum load or waveform, causing the LED to flicker.
Loose connections in the fixture or socket can also interrupt power flow, especially at low dim levels.
When to Replace Instead of Fix
If your bulb is past its rated lifespan or has been damaged, replacement may be the only solution. Check the bulb's rated hours and look for signs of physical damage.
If you've verified the dimmer and connections are fine, but the flicker persists, try a different bulb of the same type to isolate the issue.
Diagnose Your Flicker
- Symptom: Flicker only at low dim levels: This is often a dimmer compatibility issue. Replace your dimmer with one rated for LED or dim-to-warm bulbs. Check your dimmer's compatibility before replacing the bulb.
- Symptom: Flicker at all brightness levels: This suggests a loose connection or a failing bulb. Turn off power, check the socket and wiring, and tighten any loose connections. If connections are tight, try a different bulb to test.
- Symptom: Flicker stops when you replace the bulb: The old bulb was likely failing. If the new bulb also flickers, the issue is in the fixture or dimmer. If the new bulb flickers, stop and consult an electrician.
Bulb Options to Consider
- A19 DTW LED Bulb: A19 DTW LED Bulb has a 15,000-hour lifespan and is JA8 compliant. This bulb is designed for long-term use in standard medium-base fixtures, making it a reliable replacement for flickering A19 bulbs.
A19 DTW LED Bulb - G25 DTW LED Bulb: G25 DTW LED Bulb has a 15,000-hour lifespan and is JA8 compliant. If your fixture uses a G25 globe shape, this bulb offers the same dim-to-warm performance with a long lifespan.
G25 DTW LED Bulb - G8 DTW LED Bulb - 4.5 Watts: G8 DTW LED Bulb has a 25,000-hour lifespan and is currently back ordered until August. For G8 bi-pin fixtures, this bulb lasts significantly longer, but you may need to plan ahead due to the back order.
