LED Lights:
How They Work,
Cost and Safety
Plain English homeowner reference for everything LED. Whether you are upgrading old bulbs, fitting strip lights for the first time or wondering whether flickering is dangerous, this hub answers it. Written by NAPIT registered electricians.
This hub covers everything UK households need to know about LED lighting. The basics of how an LED actually produces light, the genuine answers to the safety questions (yes including spiders), the running cost vs old halogens and the practical side of cutting and connecting strip lights at home. Fourteen plain English guides organised into four topic clusters. Use the navigation below to jump to your question.
The numbers that
made LEDs the standard
These figures explain why every UK home is moving to LED. Lower running cost, longer life and a tiny fraction of the energy use of the old halogen and incandescent bulbs.
Energy vs Incandescent
A modern LED bulb uses around 90 percent less electricity than an old incandescent for the same brightness. The single biggest lighting saving any UK household can make.
Typical LED Lifespan
A quality LED bulb lasts 25,000 to 50,000 hours of use. Compare this to incandescent at 1,000 hours and halogen at 2,000 hours. Most LEDs outlast the fitting they sit in.
Cost Per Hour LED
A typical 9W LED bulb running for one hour costs around 0.2p of electricity. Even left on all evening, the cost barely registers compared to old halogen alternatives.
In This Knowledge Base
Fourteen UK LED guides covering what they are, how they work, safety questions, running costs and the practical side of strip and tape lighting installs.
Four clusters,
fourteen guides
LED Basics
Three guides covering what LED actually means, what an LED bulb is and how the technology produces light without using hot filaments like the bulbs of old.
What does LED stand for?
Read our guide on What Does LED Stand For in LED Lights covering the meaning of the acronym and a plain English explanation of what it represents.
Read guideWhat are LED lights?
Our guide on What Are LED Lights covers the different LED form factors found in UK homes. Bulbs, downlights, strip lights, panels and integrated fittings.
Read guideHow LED lights actually work
Read our breakdown of How Do LED Lights Work covering the semiconductor science in plain English and why it makes LEDs so efficient.
Read guideLED Lighting
Installation Service
C-Lec Electrical fits LED downlights, strip lights, kitchen plinths and full house upgrades across Bedford, Milton Keynes, Northampton and Luton. Free site quote, NAPIT registered work and full Building Control compliance on rewires and new circuits.
Safety & Concerns
Five guides answering the most common safety questions about LED lighting. Flickering, eye strain, fire risk, heat output and the strange but persistent question about spiders.
Are flickering LEDs dangerous?
Read our guide on Are Flickering LED Lights Dangerous covering what causes the flicker, when it signals a wiring issue and when to call an electrician.
Read guideAre LEDs bad for your eyes?
Our guide on Are LED Lights Bad for Your Eyes covers blue light, glare and what the actual research says about LED exposure for adults and children.
Read guideCan LEDs cause a fire?
Read our breakdown of Can LED Lights Cause a Fire covering the rare scenarios where LEDs are involved in fires and how to avoid them.
Read guideDo LEDs get warm?
Our guide on Do LED Lights Get Warm covers why LEDs do produce some heat (just from the driver, not the diode) and what is normal vs concerning.
Read guideDo LEDs attract spiders?
Read our overview on Do LED Lights Attract Spiders covering the surprisingly nuanced answer to one of the most asked questions about garden LED lighting.
Read guideIf you are planning a full LED upgrade, kitchen plinth lights or driveway strip installation, the install is the part to get right. Our team handles LED lighting projects across Bedford, Milton Keynes, Northampton and Luton. Strip light dimming, driver sizing and proper IP-rated outdoor work all included.
Cost & Lifespan
Two guides covering the running cost and longevity questions. Whether LEDs really are cheaper to run and how long a quality bulb actually lasts in a UK home.
Are LEDs cheaper to run?
Read our guide on Are LED Lights Cheaper to Run covering the per-hour, per-day and per-year cost comparison vs incandescent and halogen.
Read guideHow long do LEDs last?
Our guide on How Long Do LED Lights Last covers the typical 25,000 to 50,000 hour lifespan, what shortens it and how to choose long-lasting bulbs.
Read guideStrip Lights & Install
Four guides covering the practical side. Dimming compatibility, cutting strip lights to length, joining sections together and installing tape lights cleanly.
Can LED lights be dimmed?
Read our guide on Can LED Lights Be Dimmed covering the dimmable vs non-dimmable distinction and the right dimmer switches to use.
Read guideCutting LED strip lights
Our guide on Can You Cut LED Strip Lights covers the cut points marked on the strip, what tools to use and when not to cut.
Read guideConnecting LED strip lights
Read our breakdown of How Do You Connect LED Strip Lights covering connectors, soldering and how to extend a strip without dimming the end.
Read guideConnecting LED tape lights
Our guide on How to Connect LED Tape Lights covers the slimmer tape format used for under-cabinet and shelf lighting and the install detail that matters.
Read guideCommon LED questions answered fast
Are LED bulbs worth the higher upfront cost?
Why does my LED bulb flicker on a dimmer?
Can I install LED downlights myself?
Why do my LEDs look colder than the old halogens?
Do LED strip lights need a transformer?
Are smart LED bulbs worth it?
Let C-Lec Handle
Your LED Project
Once you have read enough, the next step is straightforward. Free quote, NAPIT registered work, full strip light driver sizing handled and Building Control notification on any new circuits. We cover Bedford, Milton Keynes, Northampton, Luton and surrounding areas.