I am delighted to have used Kellwood...
- P. Nisbet, Wabtec Corporation
a project that was well planned and promptly accomplished
- E. McHugh, Loganair
Where others let us down, Kellwood did not
W. Coley, Barking Abbey School
...my client is over the moon with the end results
A. Fraser, MacLean Electrical
I'd certainly recommend them
V. Richardson, Stolle Europe
I'm more than pleased with the guys. I'd recommend them to anyone
G. Gray, Logoplaste
What is lighting Efficacy?
Efficacy is a measure of how much light a light source produces for the energy put in to it. This is normally expressed in lm/W (lumens per watt). With LED sources, efficacy is advancing at a rate of roughly double every 3 years although (as with lumen degradation) this varies with drive current and temperature. Like most markets, there is a wide variety of quality and cost - efficacy is one of the most important parameters in selecting an LED light fitting. High end products can reach around 150 lm/W or even higher whereas typically the budget end of the market can be as low as 70 or 80 lm/W, meaning that they are around half the efficiency of their premium counterparts!
Our lights are used by