LED vs Halogen: Why Upgrading Saves You Hundreds
Halogen downlights cost 5–8x more to run than LED equivalents. Here's our detailed comparison with real energy savings data and upgrade costs for Devon homes.
Solutions Ltd
The Case for LED — By the Numbers
Halogen lighting technology hasn't changed in decades. A typical 50W halogen GU10 downlight produces the same brightness as an 8W LED — using over 80% less energy. In a home with 20 downlights running 8 hours a day, that's the difference between £400/year and £70/year on your electricity bill.
Beyond energy savings, modern LED downlights offer superior colour rendering, adjustable colour temperatures from warm to daylight, longer lifespans, and significantly less heat output — reducing fire risk in insulated ceilings. The only area where halogen still technically leads is colour rendering index (CRI), but premium LEDs now achieve 95+ CRI, which is indistinguishable to the human eye.
LED vs Halogen: Full Comparison
| Feature | LED | Halogen |
|---|---|---|
| Energy use (equivalent brightness) | 8–12W | 50–60W |
| Annual running cost (per bulb, 8hrs/day) | £3–£5 | £18–£25 |
| Lifespan | 25,000–50,000 hours | 2,000–3,000 hours |
| Heat output | Low — cool to touch | High — fire risk in confined spaces |
| Colour temperature range | 2700K–6500K (warm to daylight) | ~3000K (warm white only) |
| Dimmer compatible | Yes (with LED-compatible dimmer) | Yes (any standard dimmer) |
| CRI (colour rendering) | 80–98 CRI | 100 CRI (benchmark) |
| Price per bulb | £3–£15 | £1–£3 |
| Fire-rated downlight option | Yes — standard in modern installs | Limited — older style |
| Environmental impact | Low — no mercury, recyclable | Higher — more energy, shorter life |
Real Savings Example: 20-Light Kitchen/Living Area
20 × Halogen (50W each)
1,000W total × 8 hrs/day = 8 kWh/day
Annual cost: ~£430
20 × LED (8W each)
160W total × 8 hrs/day = 1.28 kWh/day
Annual cost: ~£69
Annual saving: approximately £361 — upgrade pays for itself in under 12 months.
Frequently Asked Questions
Is it worth upgrading halogen to LED?
Absolutely. A typical home with 20 halogen downlights spends £350–£500 per year on lighting energy alone. Switching to LED reduces this to £60–£100 per year. The upgrade typically pays for itself within 12–18 months through energy savings. LED bulbs also last 10–25 times longer, eliminating frequent bulb replacements.
Can I replace halogen bulbs with LED myself?
Simple bulb swaps (GU10 or MR16) can be DIY if you're replacing like-for-like. However, if you want to upgrade to fire-rated LED downlights, change the transformer (MR16 systems), or install new LED-compatible dimmers, this is electrical work that should be done by a qualified electrician for safety and warranty purposes.
Do LED lights work with existing dimmer switches?
Not always. Standard leading-edge dimmers designed for halogen often cause LED flickering, buzzing, or limited dimming range. We install LED-compatible trailing-edge dimmers that provide smooth, flicker-free dimming from 100% down to 5-10%. This is one of the most common issues we fix.
How much does an LED upgrade cost in Devon?
A full LED downlight upgrade (supply and fit) typically costs £50–£80 per light, including fire-rated fittings, LED-compatible drivers, and labour. A kitchen with 6 downlights would cost approximately £300–£480. We provide free, itemised quotes for all LED upgrade projects.
LED Upgrade Electricians Across Devon
We provide LED lighting upgrades in Newton Abbot, halogen to LED conversion in Torquay, downlight upgrades in Exeter, and LED installations in Plymouth. Our electricians also cover Paignton, Teignmouth, Dawlish, Totnes, Brixham, Ivybridge, Ashburton, Bovey Tracey, Kingsteignton, Chudleigh, Sidmouth, Exmouth, Honiton, Crediton, Okehampton, and all surrounding areas.
LED Lighting Upgrade Available Across Devon
Can't see your area? We cover all of Devon, Cornwall & Somerset. Contact us
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"Replaced 24 halogen downlights with LED. Our electricity bill dropped noticeably within the first month. Wish we'd done it years ago."
Janet & Paul H., Dawlish – LED Upgrade
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All work completed to:
BS 7671 (18th Edition) • Part P Building Regulations • IET Wiring Regulations
LED lighting upgrades available across Devon:
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