How to Replace a Recessed Light With an LED Retrofit (2024)

TL;DR: An LED retrofit kit replaces the bulb and trim in an existing recessed housing without cutting drywall, usually in 10 to 20 minutes per fixture and for $8 to $25 per kit. Most kits fit both 4-inch and 6-inch housings, use up to 75% less energy than a halogen or incandescent can light, and last 25,000 hours or more. Skip the retrofit and call an electrician if the housing is damaged, the wiring is aluminum, or the fixture shows scorch marks.

_Last reviewed: July 2026 · 7 min read_

Your recessed lights are still burning through 65-watt bulbs, the trim rings are yellowed, and one fixture flickers every time the AC kicks on. You don't need to tear open the ceiling to fix any of that. An LED retrofit kit drops into the housing you already have and turns a dated can light into a flat, efficient disc in about as much time as it takes to change a bulb.

Okoniq Property Hub lets you log the retrofit date, kit brand, and warranty for every fixture, so you're not guessing which room still has the old halogen bulbs when something needs replacing.

What is an LED retrofit kit, and how is it different from a full fixture replacement?

An LED retrofit kit is a self-contained light engine and trim that screws or clips into your existing recessed housing, replacing the bulb, socket, and trim ring in one piece. A full fixture replacement means removing the entire housing from the ceiling, which usually requires cutting drywall and rewiring from scratch.

Retrofit kits come in two main styles. Gimbal kits use an Edison screw base (E26) and thread directly into the socket like a bulb, keeping your existing baffle trim in place if you want. Integrated LED kits replace the entire trim and use spring clips that snap into the housing's mounting ears, no screw base at all. Both styles work with standard 4-inch, 5-inch, and 6-inch housings, and most packaging tells you the housing size range right on the box.

The main advantage over a bulb swap is heat and lifespan. A retrofit kit's LED driver sits outside the hot zone of the housing, so it runs cooler and typically lasts 25,000 to 50,000 hours versus 10,000 to 15,000 hours for a screw-in LED bulb in the same can.

How do you actually swap the fixture, step by step?

You turn off the breaker, remove the old trim and bulb, then clip or screw in the new kit and test it. The whole process takes 10 to 20 minutes per fixture once you've done one.

1. Kill the power at the breaker, not just the wall switch, and confirm with a non-contact voltage tester.
2. Remove the old trim ring (it usually pulls down or twists free) and unscrew or unclip the old bulb/housing insert.
3. Check the housing for a wattage rating sticker and confirm your kit matches (most kits are rated 65W-equivalent or less, safe for nearly any housing).
4. For gimbal kits: screw the adapter into the existing socket, then snap the LED head onto the adapter.
5. For integrated kits: compress the mounting springs, insert the kit into the housing opening, and let the springs expand to hold it flush against the ceiling.
6. Restore power and test on the dimmer if you have one. Not all kits are dimmable, check the box before you buy if you have dimmer switches installed.

If a fixture won't stay seated, buzzes, or trips the breaker, stop and check the housing wiring before forcing anything. That's usually a sign of a loose wire nut or a housing that's been damaged by heat over the years.

Which kit is right for your ceiling, and what will it cost?

The right kit depends on housing size, dimmer compatibility, and color temperature, and pricing runs $8 to $35 per fixture depending on brand and features. A 10-fixture kitchen and hallway retrofit typically costs $100 to $250 in parts if you do it yourself, versus $600 to $1,200 to hire an electrician for the same job.

| Feature | Gimbal Kit | Integrated Kit | |---|---|---| | Install method | Screws into existing socket | Clips into housing ears | | Adjustability | Tiltable head for accent lighting | Fixed, flush to ceiling | | Typical price | $15-$35 | $8-$20 | | Best for | Track-style directional light | Standard ambient lighting |

Color temperature matters more than most people expect. 2700K reads as warm and yellow-white, close to an old incandescent. 3000K is a neutral warm-white common in kitchens and bathrooms. 4000K and above reads cooler and bluer, better suited to garages or workshops than living rooms. Most retrofit kits list the color temperature on the front of the box in bold, so check before you buy a whole case.

If your home still has older wiring behind those housings, a lighting upgrade is a good moment to have it checked. Homes built before 1980 sometimes still have knob-and-tube wiring in ceiling runs, which isn't rated for the same fixture loads as modern Romex, even at LED's lower wattage.

When should you skip the DIY route and call an electrician?

Call a licensed electrician if the housing shows scorch marks, the wiring is aluminum, or the fixture is on a circuit that's already tripping breakers. Retrofit kits are safe for the vast majority of standard housings, but they don't fix an underlying electrical problem, they just sit on top of it.

Aluminum wiring from homes built in the 1960s and 70s needs special connectors, not standard wire nuts, and a loose aluminum connection at a recessed light can overheat even with a low-draw LED. If you're not sure what's behind your ceiling, an electrician can check in a few minutes with a panel inspection, and aluminum wiring safety fixes like COPALUM crimps are a one-time repair, not a recurring cost.

It's also worth checking your panel capacity before adding a large bank of new fixtures, especially if you're combining the retrofit with other upgrades like a workshop or EV charger down the line. 100 vs 200 amp service covers how to tell if your existing panel has room to spare.

Does a recessed light retrofit affect your attic insulation or energy bill?

Yes, older recessed housings that aren't IC-rated (insulation contact rated) create a gap in your attic insulation, and LED retrofits don't fix that gap by themselves. Non-IC-rated cans require a 3-inch clearance from insulation to prevent fire risk, which means older attics often have insulation pulled back around every single can light, creating a ring of thermal loss above each fixture.

Switching to LED does cut the heat output dramatically, an LED retrofit kit runs at roughly 15-20°F above room temperature versus 150°F+ for an old halogen can, which is one reason many manufacturers now rate their integrated kits as IC-rated even in older housings. Check your kit's packaging for an "IC-rated" or "airtight" label. If it's not there, the insulation clearance rule still applies even after the LED swap. For a broader look at whether closing those gaps pays off, see attic insulation upgrade payback.

FAQ

Can I put an LED retrofit kit in any recessed housing?

Most kits fit standard 4-inch, 5-inch, and 6-inch housings, but always check the housing's wattage sticker and the kit's listed compatible sizes before buying, since a small number of older or specialty housings need a different adapter.

Do LED retrofit kits work with dimmer switches?

Many do, but not all, and using a non-dimmable kit on a dimmer circuit can cause flickering or buzzing. Check the box for "dimmable" and confirm your existing dimmer is LED-compatible, since older incandescent-rated dimmers often need to be swapped too.

How much money does switching to LED recessed lighting actually save?

A 65-watt halogen can light running 5 hours a day costs roughly $14 a year in electricity at the national average rate of 16 cents per kWh. An equivalent 10-watt LED retrofit costs about $2 a year for the same use, so a 10-fixture room saves around $120 annually.

Why is my new LED retrofit kit flickering?

Flickering after installation usually means a dimmer incompatibility, a loose connection in the housing, or an LED kit that isn't fully seated in its mounting clips. Reseat the kit first, then check the dimmer type before assuming the bulb itself is defective.

How long does an LED retrofit kit actually last?

Most integrated LED retrofit kits are rated for 25,000 to 50,000 hours, which works out to 15-25 years at 3-5 hours of use per day, roughly triple the lifespan of a screw-in LED bulb in the same fixture.

This is educational information, not electrical advice. Call a licensed electrician if you find damaged wiring, aluminum wiring, or a housing showing signs of overheating.