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Lighting Audit

lighting audit
by John A. Herbert

Fluorescent fittings are the predominate choice for lighting systems in commercial buildings, they are an excellent energy efficient light source for the built environment. The majority operate up to 20,000 hours with high efficiency (high lumens per watt) and provide acceptable colour rendering.

lighting audit



Increasingly LED type lamps are gaining acceptance because the life span of the lamp is significantly longer and lower power consumption.

replace inefficient lighting, you will save money on your energy bills and help save the environment too



In commercial office buildings, the lighting systems account for more than 15% of the energy consumption and provide significant opportunities for energy reduction without influencing the indoor environment for the occupants.

Kelcroft's on site lighting audit expertise identifies those energy and cost savings.

Lighting Level, Lux Level

What is the right quantity of light? We use the term LUX to describe lighting level for a room, where the higher number equates to higher intensity, and higher energy bill.

For office general lighting level of 500 Lux would be satisfactory, for a corridor or other transient areas 200 Lux would adequate. However, often Hong Kong offices have more than 1000-1200 Lux recorded at working plane.

Having the poor lighting causes occupants to suffer discomfort and additional eye strain, so having the right level is critical for productivity.

Using our own instruments we physically measure the existing lighting level and record our findings. When excessive illumination is recorded we make recommendations to reduce/upgrade the lighting system to the recommended level saving money and saving energy.

The lighting level in perimeter areas that enjoy natural daylight can have lower levels of electric lighting during bright days.



Call Kelcroft to order your lighting audit today!

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tags: lighting audit