Who to call · Electrician
Recessed lights turning off by themselves? Here's Who to Call
Recessed (can) lights that turn off by themselves and come back on after a few minutes are almost always activating their built-in thermal protection cutoff. Every recessed housing has a thermal switch that kills power when the fixture overheats, preventing a fire in the ceiling cavity. Once it cools, the light comes back on — and the cycle repeats. The most common cause is using a bulb with higher wattage than the fixture is rated for: a 75W or 100W incandescent in a can rated for 60W generates far too much heat. The second cause is insulation contact. Non-IC-rated (insulation contact) housings require a minimum 3-inch clearance from insulation. If blown-in or batt insulation has been piled against or over a non-IC can, heat cannot dissipate and the thermal switch trips. Older non-IC cans installed in the 1980s and 1990s are especially prone to this after attic insulation upgrades. The easiest and safest fix is retrofitting with LED modules or LED bulbs, which produce a fraction of the heat — a 10W LED replaces a 65W incandescent flood. LED retrofit kits that snap into the existing housing cost $15–$40 per light and can be self-installed. If the housing itself is damaged, corroded, or non-IC-rated in an insulated ceiling, an electrician can replace it with a modern IC-rated, airtight housing ($100–$250 per fixture installed). A licensed electrician should also inspect the wiring connections inside the junction box — loose wire nuts or backstabbed connections in the fixture's J-box can arc and cause intermittent shutoffs ($75–$150 per service call). If multiple recessed lights on the same circuit are cycling off, the circuit itself may be overloaded.
What's going on
How to fix recessed lights turning off by themselves
Some "recessed lights turning off by themselves" cases look simple, but getting it wrong almost always costs more than calling a pro: hidden leaks, fire risk, code violations, and insurance headaches. A licensed electrician will diagnose the exact cause, use the right professional tools, and stand behind the repair. Most local pros offer free quotes and can visit the same day or the next.
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Electrician
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Symptoms to look for
- 01
Recessed light turns off after being on for a while, then turns back on after cooling
- 02
Bulb feels extremely hot to the touch when the light shuts off
- 03
Burning or hot plastic smell near the ceiling around the light
- 04
Light flickers or dims before shutting off completely
- 05
Multiple recessed lights on the same circuit cycling off together
FAQ
Frequently asked questions
Who should I call for: Recessed lights turning off by themselves?
Recessed (can) lights that turn off by themselves and come back on after a few minutes are almost always activating their built-in thermal protection cutoff. Every recessed housing has a thermal switch that kills power when the fixture overheats, preventing a fire in the ceiling cavity. Once it cools, the light comes back on — and the cycle repeats. The most common cause is using a bulb with higher wattage than the fixture is rated for: a 75W or 100W incandescent in a can rated for 60W generates far too much heat. The second cause is insulation contact. Non-IC-rated (insulation contact) housings require a minimum 3-inch clearance from insulation. If blown-in or batt insulation has been piled against or over a non-IC can, heat cannot dissipate and the thermal switch trips. Older non-IC cans installed in the 1980s and 1990s are especially prone to this after attic insulation upgrades. The easiest and safest fix is retrofitting with LED modules or LED bulbs, which produce a fraction of the heat — a 10W LED replaces a 65W incandescent flood. LED retrofit kits that snap into the existing housing cost $15–$40 per light and can be self-installed. If the housing itself is damaged, corroded, or non-IC-rated in an insulated ceiling, an electrician can replace it with a modern IC-rated, airtight housing ($100–$250 per fixture installed). A licensed electrician should also inspect the wiring connections inside the junction box — loose wire nuts or backstabbed connections in the fixture's J-box can arc and cause intermittent shutoffs ($75–$150 per service call). If multiple recessed lights on the same circuit are cycling off, the circuit itself may be overloaded.
Can I fix this myself?
Some minor cases can be handled DIY, but most require a licensed electrician to avoid costly rework and safety risks. A free quote takes under a minute.
How fast can a pro come out?
Most electricians offer same-day or next-day visits for non-emergency issues. True emergencies (burst pipes, gas smell, no heat in winter) are typically handled within 1–4 hours.
How much does it cost to fix?
Costs vary by severity and your location. Submit a free quote request to get real pricing from verified local pros in your area.
What are the signs of: Recessed lights turning off by themselves?
Recessed light turns off after being on for a while, then turns back on after cooling. Bulb feels extremely hot to the touch when the light shuts off. Burning or hot plastic smell near the ceiling around the light. Light flickers or dims before shutting off completely. Multiple recessed lights on the same circuit cycling off together.