Domakihub How to Choose LED Bulbs: Save Energy and Pick the Right Light
Match brightness, color, and fitting to every room in your home or rental.
Reviewed by Domakihub home & decor pros · 2026-06-23 · 5 min read
Switching to LED lighting is one of the simplest upgrades you can make to cut electricity bills — a genuine priority for Greek homes and holiday rentals where summer air conditioning already pushes costs high. The video above walks through the key terms in plain language; this article turns those concepts into a five-step buying checklist you can use at any hardware store or online. Whether you are outfitting a single apartment in Athens or replacing every fixture across a villa in the Peloponnese, the same logic applies.
Why LED Bulbs Are Worth the Switch
LED (light-emitting diode) bulbs use up to 80 percent less electricity than the old incandescent bulbs they replace, and they last ten to twenty-five times longer — typically 15,000 to 25,000 hours of use. For a holiday rental that runs lights most of the evening, that translates directly into fewer replacements and noticeably lower energy bills over a season.
In Greece, electricity prices have risen sharply in recent years, making efficiency a practical financial decision rather than a lifestyle choice. LEDs also produce far less heat than halogen alternatives, which matters in homes and hotels that are already warm for much of the year.
The Jargon Decoded
Three numbers appear on every LED box and they are all you really need: lumens (brightness), watts (power draw), and Kelvin (colour of the light). Ignore the watt figure as a guide to brightness — that was the incandescent rule. Instead, use lumens: a standard living-room bulb needs roughly 800 lumens, a reading lamp 450, and a kitchen work area 1,000 or more.
Kelvin measures the warmth or coolness of the light. A low Kelvin value (2,700–3,000 K) gives a warm, amber tone that suits bedrooms, lounges, and dining rooms. A higher value (4,000–5,000 K) produces a cool, daylight-style white that works well in kitchens, bathrooms, and offices. Going above 5,000 K tends to feel clinical and is rarely comfortable in a home setting.
5 Steps to Choosing the Right LED Bulb
- 1
Check the fitting first
Before anything else, look at the base of the bulb you are replacing. The most common types in Greek homes are E27 (large screw), E14 (small screw), GU10 (bayonet spotlight), and G9 (pin fitting in small fittings and chandeliers). Buying the wrong base means the bulb will not physically fit, so confirm the type before browsing.
- 2
Decide on the brightness you need
Use lumens, not watts, to judge brightness. As a practical guide: hallways and accent lighting need around 250–450 lm; bedside and table lamps 450–800 lm; main ceiling lights in living rooms 800–1,100 lm; kitchens and workspaces 1,000–1,500 lm. If you are replacing a 60 W incandescent, look for 800 lm; for a 100 W bulb, aim for around 1,600 lm.
- 3
Choose the colour temperature for each room
Warm white (2,700–3,000 K) creates a relaxed, inviting atmosphere and is the right default for bedrooms, living areas, and dining spaces in homes and rentals — guests consistently respond well to it. Cool white (4,000 K) is good for bathrooms and kitchens where clarity matters. Avoid mixing colour temperatures in the same open-plan space, as the contrast looks jarring.
- 4
Check the CRI if quality of light matters
CRI (Colour Rendering Index) measures how accurately a bulb shows the true colours of objects, on a scale from 0 to 100. Standard LEDs have a CRI of around 80, which is fine for most rooms. If you are lighting a boutique hotel room, a showroom, or anywhere with artwork or carefully chosen fabrics, look for CRI 90 or above — colours will look richer and more natural.
- 5
Verify dimmability before you buy
Not all LED bulbs are compatible with dimmer switches, and using a non-dimmable LED on a dimmer can cause flickering, buzzing, or early failure. If you have dimmer switches (common in sitting rooms and master bedrooms), the bulb packaging must specifically state 'dimmable'. You may also need to replace older dimmer switches with LED-compatible models — it is worth checking at the same time.
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FAQ
- Can I use LED bulbs with my existing dimmer switches?
- Only if the bulb is explicitly labelled 'dimmable'. Standard LED bulbs will flicker or fail on a dimmer. Additionally, older leading-edge dimmers designed for incandescent bulbs often need to be replaced with LED-compatible trailing-edge dimmers for smooth operation. Check both the bulb and the switch.
- How many lumens do I need for a typical Greek living room?
- A living room of around 20–25 square metres generally needs 2,000–3,000 total lumens across all light sources. If you have a single ceiling fitting, a 1,000–1,100 lm LED gives a comfortable base level; add floor or table lamps to fill in. Rooms with dark walls or low ceilings benefit from slightly higher lumen totals.
- Are cheap LED bulbs from discount shops worth buying?
- Very low-cost LEDs often have poor CRI, shorter-than-stated lifespans, and may flicker noticeably on video calls or in spaces where people spend long hours. For holiday rentals and hotels where guest experience matters, mid-range bulbs from established brands (Philips, Osram, GE) cost a little more per unit but last longer and produce more consistent light quality — making them the better value over time.