The Case for LED Lighting

If your Devon home still has halogen bulbs, you're paying more than necessary for lighting. LED technology has advanced dramatically, offering better light quality at a fraction of the energy cost.

The Numbers

Bulb Type	Power	Running Cost (per 1,000 hrs)
LED equivalent	5W	£1.50
Halogen GLS	60W	£18.00
LED equivalent	6W	£1.80

Based on 30p/kWh electricity cost

LED vs Halogen Comparison

Energy Efficiency

Factor	Halogen	LED
Heat waste	90% as heat	10% as heat
Power for same light	50W	5-7W
Savings	Baseline	80-90% less

Lifespan

Bulb Type	Typical Lifespan
LED	25,000-50,000 hours
Ratio	12-25x longer

Light Quality

Modern LEDs match or exceed halogen:

Colour temperature - Warm white (2700K) matches halogen
Dimming - Good dimmable LEDs now available
Colour rendering - CRI 90+ LEDs show true colours
Instant on - Full brightness immediately

Room-by-Room Savings

Kitchen (8 x 50W Halogens)

Current	LED Upgrade
£120/year (4hrs/day)	£12/year
Annual saving: £108

Living Room (6 x 50W Halogens)

Current	LED Upgrade
£65/year (3hrs/day)	£6.50/year
Annual saving: £58.50

Bathroom (4 x 50W Halogens)

Current	LED Upgrade
£22/year (1hr/day)	£2.20/year
Annual saving: £19.80

Whole House Example

A typical 3-bed Devon home with 30 halogen spotlights:

Current	After LED Upgrade
£328/year	£33/year
Annual saving: £295

Types of LED Upgrades

Direct Replacement

Simply swap halogen bulbs for LED equivalents:

Fitting	Halogen	LED Replacement
MR16	50W	5-7W LED MR16
G4	20W	2W LED G4
GLS (E27/B22)	60W	6-8W LED

Cost: £3-8 per bulb (DIY)

Dimmer Compatibility

If you have dimmers, ensure:

Trailing edge dimmers work best with LEDs
LED-compatible dimmers may be needed
Minimum load requirements are met

Upgrade cost: £30-60 per dimmer installed

Full Fitting Upgrade

Sometimes better to replace entire fittings:

Integrated LED fittings - Longer warranty
Modern designs - Improved aesthetics
Better optics - More even light distribution

Cost: £40-100 per fitting installed

Choosing Quality LEDs

What to Look For

Specification	Recommended
CRI (Colour Rendering)	90+ for best quality
Lumens	Match or exceed halogen
Dimmable	If using with dimmers
Warranty	3+ years

Brands We Recommend

Philips - Consistent quality, good dimming
Osram/Ledvance - Reliable, widely available
Aurora - Good trade option
Integral LED - Value with quality
Luceco - Budget-friendly basics

Avoid Cheap LEDs

Poor quality LEDs cause problems:

Flickering - Annoying and harmful
Early failure - False economy
Colour inconsistency - Uneven appearance
Poor dimming - Buzzing, not smooth
Fire risk - Inadequate heat management

Common Problems and Solutions

Dimmer Buzzing

Cause: Incompatible dimmer

Solution: Upgrade to LED dimmer (£30-60 installed)

Flickering

Cause: Poor quality LED or incompatible dimmer

Solution: Try different LED brand or upgrade dimmer

Not Bright Enough

Cause: Insufficient lumens

Solution: Choose higher lumen output (check lumens, not watts)

Too Blue/Cold

Cause: Wrong colour temperature

Solution: Choose 2700K for halogen warmth

Transformer Issues

Low Voltage Systems

Many kitchens have 12V MR16 halogen systems:

Issue	Impact
Minimum load	LEDs often below transformer minimum
Compatibility	Some transformers cause flickering

Solutions

LED driver replacement - Best long-term fix
GU10 retrofit - Convert to mains voltage
Dummy load - Meets minimum (temporary fix)

Conversion cost: £20-40 per fitting point

Installation Options

DIY (Bulb Swap Only)

If simply replacing bulbs:

Switch off at wall
Let halogens cool
Swap like for like
Test and dispose of halogens safely

Professional Installation

For dimmer upgrades or fitting replacements:

Service	Typical Cost
Fitting replacement	£40 - £80 each
Transformer conversion	£50 - £80 per group
Whole house LED upgrade	£300 - £600

Environmental Benefits

Carbon Reduction

Per household switching 30 halogens to LED:

Energy saved: 1,350W → 135W
Annual kWh saved: 1,500+ kWh
Carbon saved: ~350kg CO2/year

Waste Reduction

Fewer bulbs - LEDs last 12-25x longer
Less packaging - Fewer replacements
Recyclable - LEDs contain no mercury

Ready to upgrade to LED lighting in Devon? Call Grant's Electrical Solutions on 01626 374 059 for advice and installation.