PHOS vs. UNIOS vs. KREON for a Full-House Ceiling Lighting Plan

Having used both for various projects in my interior design career, I’d say PHOS and Unios are actually closer competitors than people think — just with slightly different philosophies.

If you’re doing a full-house ceiling lighting plan, the decision basically comes down to this:

  • PHOS = cleaner/invisible ceiling aesthetic

  • Unios = easier ambient brightness with less effort

PHOS is really strong if you care about that ultra-minimal architectural look. Their apertures are tiny, trims are beautifully refined, and the fittings visually disappear into the ceiling. In the right space, it looks very high-end. The light also feels very controlled and intentional.

The tradeoff is that small-aperture fittings naturally don’t throw as much light individually, so to get the same overall brightness you often need more fittings, tighter spacing, and better planning. 

Unios is a little more “practical architectural,” if that makes sense. Still very clean and premium, but the fixtures are generally a bit more output-oriented. Easier to achieve bright, even ambient lighting across an entire home without overcomplicating the layout.

Personally, if I were doing a full-house plan, I’d use PHOS in the highly visible areas (living room, entry, hallway, feature spaces), and Unios for the heavy-lifting ambient lighting (kitchen grids, circulation, utility zones). 


One other thing people underestimate: ceiling height and finishes matter a lot here. If you have darker interiors, timber ceilings, high ceilings or large open-plan spaces…then Unios becomes much safer because you simply need more usable lumens.

But if your ceilings are low-ish, pale, and you really care about visual minimalism, PHOS can look absolutely beautiful.

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