Achieving Well Standard v2

The impact of interior lighting on human wellness is one of 11 concepts that make up WELL Standard V2: LIGHT. Research indicates that lighting can also impact other areas of the WELL Standard, SOUND and MIND, in particular.

LIGHT Features

LIGHT is comprised of eight distinct features that explore the impact of light in the built environment:

Feature Key Variable
L01 Light Exposure and Education (pre-condition) Daylight
L02 Visual Lighting Design (pre-condition) Illuminance design
L03 Circadian Lighting Design (optimization) Luminaires with spectrum optimized for EML
L04 Glare Control (optimization) Luminaires with good glare control
L05 Enhanced Daylight Access (optimization) Daylight
L06 Visual Balance (optimization) Surface luminance design
L07 Electric Light Quality (optimization) Luminaire color quality and flicker
L08 Occupant control of Lighting Environment (optimization) Personal control and task lighting
SOUND Feature S04

FEATURE S04: Sound Absorption

Lighting can assist in the sound feature (S04) using acoustical luminaires to absorb sound and help improve reverberation times. Reverberation time is simply the Echo in the room.

Lumenwerx and WELL: Luminaire selection

Lumenwerx can help designers and architects meet WELL standards in four features related to luminaire selection:

• L03 Circadian Lighting
• L04 Glare Control
• L07 Electric Light Quality
• L08 Occupant control of Lighting Environment
• S04 Sound Absorption


Feature L03: Circadian lighting optimization

WELL standard for circadian lighting can be satisfied by earning either 1 or 3 points. This variance depends on the Equivalent Melanopic Lux (EML) levels registered by your electric lighting system.

• EML levels must be measured between 9 a.m. and 1 p.m. and may include daylight

• You will need at least 1 point from L03 as a precondition for L01: Light Exposure and Education

Measuring Equivalent Melanopic Lux (EML)
Equivalent Melanopic Lux (EML) must be recorded vertically at eye level using the following formula:

EML=L x EML ratio

Measuring vertical illumination
The best way to measure vertical illumination at eye level is through one of:
• Indirect light distributions

• Direct/indirect light distributions

• Direct lighting with soft distribution (above 45 degrees)

Achieve the results you need with Luminaires that use:
• Bios LED
Tunable white DUO

Recommended luminaires with bios LED

Feature L04: Glare Control

Today’s stringent energy codes have made under lit workspaces are a fact of modern life. The struggle is to provide enough light to keep people alert and focused on their tasks, while controlling glare that leads to eye strain. Achieving WELL v2 standard for Glare Control requires reducing glare through two requirements:

Part 1. Daylight
Part 2. Electric Light

Requirements: Glare control
L04 provides four ways to meet glare reduction requirements:

  • Installing indirect luminaires
  • Installing luminaires below 16 foot AFF or 5m with a UGR of 19 or lower
  • Mounting luminaires above 16 foot AFF or 5m with a UGR of 22 or lower
  • Installing fixtures with a luminance of less than 10,000 cd/m2, or 1,000 candela, between 45 degrees  and 90 degrees from nadir

All recommended fixtures have been tested and verified base on all four requirements stated above.

View luminaires

Feature L07 Electric Light Quality

While the volume of light in a room is important, the quality of that light is also key. This means taking light colour into consideration, and ensuring trusted light engines are used. WELL feature L04 addresses the quality of electric light in a space, with the goal of promoting wellness for the people who occupy it.

Requirements: Ensuring colour rendering quality (1 point)
Feature L07 governs the use of LED light sources and low-flicker electronics. As such, all electric lighting in a space (with the exception of decorative, emergency or special-purpose lighting) must meet at least one of the following requirements:Requirements: Managing flicker (1 point)
All electric lighting in a space (with the exception of decorative, emergency or special-purpose lighting) must meet at least one of the following requirements:

  • Minimum frequency of 90 Hz at all 10% light output intervals, from 10% to 100% light output.
  • LED fixtures with a “low risk” flicker level (light modulation) of less than 5% – especially below 90 Hz operation as defined by IEEE standard 1789-2015 LED.

All Lumenwerx luminaires meet this criteria with all listed driver options, when 90 CRI or bios LED is selected.

View luminaires

Feature L08 Occupant Light Control of Lighting and Environment

When the people in a room can control the lights themselves, their enjoyment of a space increases dramatically. This is why Feature L08 requires that lighting systems, even those that are automatically controlled, allow room occupants to exert control over specific aspects of the lighting scheme.

Requirements: Part 1 – all spaces
WELL Feature L07 mandates that ambient lighting systems in a regularly occupied space, are:

  • Human-centrically tuned and automated to maximize circadian and visual comfort.
  • Able to be overridden by room occupants for at least 30% of operating hours. This includes control over dimming, colour temperature and the colour of electric light in their immediate environment.

Requirements: Part 2 – all spaces except dwelling units
WELL V2 also requires that in workspaces where people will be performing specific tasks, supplemental (task) light fixtures:

  • Allow occupants to increase light levels at least two times above those indicated in Feature L02 of Visual Lighting Design.
  • Must be included as part of the master lighting design concept with no additional costs.

Additionally, Part 2 requires that supplemental fixtures must be provided within eight weeks of an employee request.

View luminaires

Feature S04 Sound Absorption

By using sound absorbing luminaires in wide open spaces, we can assist with this WELL feature. At Lumenwerx we have developed an easy acoustic calculator to assist in simple calculation for our 9 Acoustix luminaires.

Recommended luminaires

Acoustic calculator