Tunable White Lighting Explained: How It Works & Cost
Tunable white lighting is LED lighting whose colour temperature can be adjusted — shifting from warm 2700K in the evening to neutral or cool white during the day, without changing the fixture. It works by blending two LED channels, one warm white and one cool white, in different ratios. It's the technology that makes circadian and human-centric lighting possible in practice, and it needs to be specified and wired before construction — not added later. Tunable white is one of the most talked-about lighting technologies right now, and one of the most misunderstood. Showrooms use “tunable white” and “dim to warm” as if they mean the same thing. They don’t. This guide explains how it actually works, what to specify, what it costs, and — honestly — when it’s worth it and when it isn’t. Who Is This Guide For? Homeowners planning a new home or renovation who've been offered "tunable" or "adjustable" lighting and want to understand what they're actually buy...