Answers for people who make lighting decisions
Technical Documentation & Expertise.
Guides, standards explainers, and spec sheets for lighting professionals — covering energy efficiency, LED retrofits, compliance, and product selection for the North American market. Written by engineers, kept current.
Illumineer Technical Guides
Plain answers to real lighting questions.
LED Retrofit vs. Replacement
When to upgrade a fixture and when to replace it — decided on evidence, not habit.
Beyond the 50% Swap
Why a like‑for‑like tube swap leaves about a third of the savings behind.
Understanding UL, cUL, CSA, ETL & DLC
What the lighting marks mean, and which ones your project actually needs.
How Carbon Costs Change the Lighting ROI
Why rising energy and carbon costs make efficient lighting pay back faster.
How LED Retrofits Help Fight Climate Change
The climate case for efficient lighting — lower energy, and less waste.
More on the way: FAQs, standards explainers, and downloadable spec sheets.