How Should I choose the Best LED Light Bulb for rooms in my home?

Every room in your home is different.

Lighting gives us a subtle impact from sleep schedule to brain power.  Bulbs that emit blue light waves produce serotonin, which makes us focused, awake, and alert. Bulbs that don’t emit blue light waves allow for our brain to produce melatonin, which makes us relaxed, drowsy, and ready for a good night sleep.

Lower temperature bulbs produce warm-whites, like a fire, while medium temperature bulbs produce neutral-whites, and higher temperature bulbs produce cool-whites or mimic daylight.

It is also a common misconception that the brightness of a light bulb is measured in Watts. Watts measure energy usage, while Lumens measure brightness.

LED Lighting for Bedroom Use
In our bedrooms, most of us want the atmosphere to be relaxed, calm, and peaceful. Avoiding blue light waves in the bedroom will keep your circadian rhythm from confusing the light in your bedroom with the natural light outside. This allows your brain to produce the melatonin needed for a comfortable sleep. Are you a nighttime reader? If you have a bedside reading lamp or plan on buying one, soft blue or neutral tones are better for reading specific fixtures, since the cool-white color creates a high contrast with the page.
Suggested Total Brightness Level – 1,500 to 4,000 Lumens / Suggested Color Temperature: 2700-6500K
LED Lighting for Home Office Use
When lighting a home office, we want to make sure that the lights are maximizing our ability to be productive in the space provided. Putting cool-white lights in the office that mimic daylight will increase serotonin production keeping you focused, alert, and energized. Make sure to choose a place that won’t create unwanted glares on your computer screen. You may also want to consider LED Desk Lamps which offer great task lighting and the ability to switch color temperature on demand.
Suggested Total Brightness Level – 3,000 to 6,000 Lumens/ Suggested Color Temperature: 3000-6500K
LED Lighting for Living Room Use
The living room is a popular place to seat guests, entertain, or just kick back and relax. Whether you are watching a movie, or chatting with friends, it is important to have a mix of light sources in the living room in order to adapt to whatever the occasion may be. Like in the bedroom, it is good to avoid bright, blue-light emitting lamps that create serotonin and give us energy. Adjustable spotlight lamps can be pointed at the walls to illuminate artwork, family photos, or simply to reduce glare on the TV. Positioning spotlight lamps at walls or ceilings is also a great way to eliminate unwanted shadows. New LED 3-Way lamps can be used in all three way table lamps you may have in your living room.


Suggested Total Brightness Level – 1,500 to 3,000 Lumens / Suggested Color Temperature: 2200-6500K

LED Lighting for Dining Room Use
When eating a nice meal with the family or guests, we don’t want the lighting to be overly bright and obnoxious, and we certainly don’t want it to be so dim that we’re dozing off. Whether it’s an afternoon brunch or a late dinner, a dimmable overhead fixtures allow for that perfect brightness at any time of day. We recommend soft to neutral tones for the dining room that create the perfect ambiance. Also, consider LED bulbs for chandelier fixtures that are commonly used in a dining room, LED chandelier bulbs now offer beautiful color and light output.
Suggested Total Brightness Level – 3,000 to 6,000 Lumens/ Suggested Color Temperature: 2200-6500K
LED Lighting for Kitchen Use
The kitchen is in essence a workspace. Many of us start our mornings in the kitchen, so those blue-light emitting bulbs over the counters will help make us alert and awake while prepping breakfast. If you also have a table in your kitchen, a dimmable overhead fixture with a warmer color temperature can create a nice ambiance to balance out the brighter blue lights over the kitchen counters. Kitchens also can take advantage of recessed overhead lighting which can benefit from LED BR Bulbs or Recessed Retrofit Kits.
Suggested Total Brightness Level – 4,000 to 8,000 Lumens /Suggested Color Temperature: 2700-6500K


LED Lighting for Bathroom Use
Before we go to school or work, most of us get ready by looking in the bathroom mirror. Ideally, we want the lighting to come from around the mirror rather than on the ceiling. Using bright lights will ensure we don’t miss a spot shaving or mess up our makeup. Since many of us start the day with a shower, putting a high output surface mount retrofit fixture in the shower fixture is a great way to start waking up before tackling the day ahead. Use larger globe style bulbs to illuminate common fixtures places above and or around the mirror.
Suggested Total Brightness Level – 4,000 to 8,000 Lumens / Suggested Color Temperature: 3000-6500K



How can I start to do lighting for my house?

Lighting is around us and it affects our daily life. So, when a home owner engages in lighting design for his own house, lighting in house will be more practical suiting purposes best. You can start from some basic rules. Certain types of lighting serve a specific purpose. Choosing the right type should consider:

Step 1: Each Room’s Function
Generally, lighting function falls in one of three categories: ambient, task, and accent.

  • Ambient Lighting : This is usually your primary source of light in the room. It can allow for entrance and egress, function within the room. It also task. It usually provides an even distribution of light around the room and is not usually your dramatic mood lighting. It can come from recessed ceiling lights, a pendant/chandelier or ceiling mounted lights as in a closet or Laundry Room.
  • Task Lighting : It lights an area where a task is being performed. It is usually in addition to the other types of light in the room and rarely used alone. It can be used for reading, cooking, sewing, writing, applying make-up, etc. Some sources of task lighting are under cabinet lights in a kitchen, vanity lights in a bathroom, a reading lamp or desk lamp, adjustable recessed lights directly over a bed for nighttime reading.
  • Accent Lighting: it provides an accent light source to highlight art or an architectural feature, a piece of furniture, a sculpture or even a plant. This light source can come from an adjustable recessed light, a track light, a mono-point ceiling or wall mounted light, a wall sconce, a picture light, a table lamp, cove lighting, or in-the-floor up-lighting. Accent lighting has a more specific subject to light than the broader focused general lighting.

To properly light your rooms using these techniques to layer your room lighting, you can start with ambient lighting, then consider task and accent lighting.

Step 2: Choose the Right Bulbs
Different bulbs perform differently and determines what the light will look like. There are four basic types of bulb most common for home use:

  • Incandescent: They produce a warm, glowing light but are starting to phase out in favor of more energy – efficient options.
  • Halogen: They give off a bright and white light similar natural daylight. Suitable for task lighting. They are starting to phase out in favor of more energy – efficient options.
  • Compact Florescent Bulbs (CFLs): They are available in a range of brightness level and temperature while consuming 50%- 75% less energy consumption than incandescent bulbs. They also last longer. CFLs contain somewhat amount of mercury which requires more careful handling and disposal.
  • LEDs: LED, or light-emitting diode, is a two-lead semiconductor light source. LEDs are often more efficient, durable, and longer lasting than other types of light bulbs.


Therefore, we recommend you make the transition to LED bulbs throughout your home.

Step 3 : Learn lighting language on label
When you buy a bulb, you might notice a label which includes information about brightness, how long the bulb will last, how much energy it uses, and whether it meets Thai Industrial Standard as well as Consumer Protection Board

Lumens = Brightness

The more lumens, the brighter the bulb. So how many lumens do you need for each room? It depends on how big your room is, what color your walls are, also, intensity of lighting you prefer. Use this calculator to come up with a specific number, based on your home and preferences. However, here’s a rough chart from Lighting Research Center

Light Appearance = Kelvins

Beyond brightness, you also want to consider the color temperature of the light measured in Kelvins. The higher the Kelvins, the cooler the light. Here is some advice of how to use bulb temperatures in different room functions.

  • Warm White (2700-3000 Kelvin): Best for bedrooms and living rooms; providing a traditional warm, cozy feel to them
  • Cool White (4000 Kelvin): Best in kitchens, bathrooms or garages; giving rooms a whiter, more energetic feel
  • Daylight (5000-6000 Kelvin): Best in bathrooms, kitchens and basements; good for reading, intricate projects, or applying makeup—provides the greatest contrast among colors.

Step 4: Pick Your Fixtures
Here are some fixtures and some tips how to choose and install:

  • Ceiling mount fixtures: Standard for ambient lighting. Ideally for entry foyers, hallways, bedrooms, task areas, stairways.
  • Chandeliers: For general or ambient lighting, they are mostly used in dining room or bedrooms. Chandeliers with complex design will appear bigger. You should scale your maximum width down slightly.

Please click here for more details about how to choose the perfect chandelier.

  • Wallmounted fixtures: They can be used in any room for ambient, task, or accent lighting, depending on installed location and the kind of bulb used with. The closer you will be to wall lamp’s lighting, the smaller the lamp should be.

Please click here for more details about how to choose the perfect wall lamp.

  • Pendant lighting: Can be used for task or general lighting, hanging from the ceiling and are equipped with shades to avoid glare. They work best over dining room tables, countertops or other work areas.
  • Recessed lighting: is most versatile; it can be used for general, task or accent lighting, depending on how bright home owners require and where they are located.
  • Track Lighting: Suitable for accent lighting. Users can adjust the individual lamps around and point them in preferred direction such as artworks painting. On the other hand, they can be used to illuminate the whole room.

Table lamps: Suitable for accent lighting in a living room or task lighting in a bedroom. A general rule of thumb is that the lamp should be no more than 1.5 times the height of installation stand and lampshade diameter should not be wider than the table top.

Can we do lighting decoration like a professional lighting designer?

Yes, we can start to enhance personality, style as well as functionality to your home. Here are some tips from professional interior designers.

Light in Layers
Lighting different zones and areas of a room – as well as the entire room – helps provide light where you’ll need it most and adds visual interest. When choosing lighting fixtures, consider these three light “layers”: Ambient lighting, task lighting, and accent lighting.
Have fun with pendants
Pendant lights are a great source for style and illumination. Their compact size and adjustable height allows you to use multiple and arrange them in creative ways. Choose pendant lights from different collections, stagger them or create cluster
Add dimmer controls
switches and controls provided added versatility – creating a light source that’s customizable to your needs and mood. Consider your dining room lighting design: with a dimmer switch, you can turn a chandelier on when kids are doing homework or soften the light for a more subdued gathering with friends.
Position vanity lights right
Whether you’re applying makeup, shaving or brushing your teeth, the lighting in a bathroom helps you see it all. To avoid shadows, and to fully surround your face with flattering light, install a fixture that’s at least 24-inches wide over the top of your bathroom mirror. Then add two wall sconces or pendants on each side of the mirror. Position these at least 28-inches apart and 60-inches from the floor.
Long table? Go linear
With a longer dining room or kitchen table – or even a rectangular table – consider a linear chandelier or multiple pendants along the length of the table.
Counters + extra light
Under-cabinet lighting is a must in the kitchen. The light will shine on the outer edge of the counter – where it will fully illuminate kitchen tasks.
Make an entrance
Lighting inside an entryway helps welcome guests – and makes a lasting first impression. Consider a stylish chandelier along with wall lamp flanking the space.
Create a focal point
aren’t just for the dining room. Use them in master suites, children’s rooms, bathrooms and even luxury powder rooms; they add an elegance and focal point that can define the style for a room.
Wow your powder room
Powder rooms are the perfect place to add a little bling to your home; whether you choose a petite crystal chandelier over the sink, decorative pendants beside a mirror or an ornate light that’s a bit unexpected.
Stay Coordinated
Today’s open floor plans mean lighting from one room to another need to coordinate as well – in style as well as quality of light. When choosing bulbs, make sure they all deliver a similar color temperature. This will help décor colors look consistent from room to room.
What are suggested brightness for each room in my house ?
What are suggested luminair brightness for each commercial use ?
Are there any regulations for lighting design for business & industrial use?

The Royal Gazette, Volume 133, Part 31 a, 17 October 2016: Ministerial Regulation on the Prescribing of Standard for the Administration and Management of Occupational Safety, Health and Environment in relation to Heat, Light and Noise, B.E. 2559 (2016) (New Version) which came into force on 17 October 2016 (by virtue of Section 8 of the Occupational Safety, Health and Environment Act, B.E. 2554 (2011)).