HOZO Room Planning Guide
Lighting Size & Installation Guide
Choose a fixture that fits the room, clears the people and furniture below it, and can be supported safely. This metric-first guide turns room measurements into a practical lighting brief.
A successful light is not selected by diameter alone. Its visual weight, drop, light output, glare, mounting plate, cable adjustment and installation surface all affect whether it belongs in the room. Use the calculations below as starting points, then verify every dimension and electrical detail on the exact product variant.
01 / Measure first
Build a room and installation brief
Record the room length, width and finished ceiling height. Add the dimensions and position of the table, island, bed or seating group below the light. Mark doors, tall cabinet doors, circulation routes and the strongest sightline into the room.
Length, width, ceiling height and architectural centre.
Table, island or furniture width, length and finished height.
Overall width, body height, canopy, cable range and weight.
Mounting surface, electrical point, controls and access for maintenance.
Measurements are not structural approval
Confirm ceiling construction, permitted fixture weight, mounting hardware and electrical requirements before ordering. Fixed wiring and uncertain mounting conditions should be handled by a qualified electrician or competent professional.
02 / Scale
Estimate diameter, then judge visual weight
Room example
A 3.5 m x 4.5 m living room gives (3.5 + 4.5) x 8.3 = about 66 cm. Compare nearby available sizes, then check the fixture depth and silhouette. An open glass frame reads lighter than an opaque metal shade of the same width.
For an elongated room, two smaller fixtures may create better rhythm than one very large central fixture.
Above a dining table or island
A fixture or grouped composition spanning roughly one-half to two-thirds of the surface width is a useful visual starting range. Keep the outer edges comfortably inside the table or island so people can stand up, reach and see across it without meeting the light.
Start with a round fixture around one-half to two-thirds of the table diameter. Preserve edge clearance and sightlines.
Use a linear pendant, an elongated chandelier or a repeated series whose total visual span follows the table.
Centre on the seating composition when that is stronger than the geometric room centre. Check the view from doorways.
A central ceiling light can follow room scale; bedside pendants should instead follow the bed, bedside surface and user reach.
03 / Vertical position
Set the drop from what happens below
Measure from the lowest part of the installed fixture, including bulbs, finials and decorative drops. Adjustable cables help, but only within the range allowed by the product and canopy.
| Location | Useful starting point | Check before fixing |
|---|---|---|
| Dining table | 75-90 cm above the tabletop | Eye line when seated, glare and centrepiece height |
| Kitchen island | 75-90 cm above the worktop | Standing eye line, task light and extractor/cabinet clearance |
| Open walking route | About 210 cm minimum floor clearance | Tall users, doors and applicable local requirements |
| Bedside pendant | Position from the bedside surface and shade | Reach, head clearance and exposed bulb glare |
| Stair or double-height void | Plan from every floor and landing | Head clearance, sightlines and safe servicing access |
04 / Repetition
Space multiple pendants as one composition
Define the usable span
Subtract a comfortable end margin from each end of the table or island. The remaining length is the composition zone.
Mark fixture centres
For two pendants, divide the usable span into two equal bays. For three, divide it into three. Keep centre-to-centre spacing consistent unless the design intentionally varies.
Check shade width
Confirm adjacent shades do not visually crowd one another and that the outer shades remain inside the surface edges.
Mock up before drilling
Use tape, string or paper circles at full scale and view them from the room entrance and seated positions.
Example: 220 cm island, three pendants
Reserve about 25 cm at each end, leaving a 170 cm composition span. Divide that span into three equal bays and place each pendant near the centre of its bay. Refine the result for the real shade diameter and ceiling points.
05 / Performance
Match light quality to the task
A correctly sized object can still produce poor light. Review lumen output, colour temperature, beam direction, shade transparency, glare and dimming on the exact variant.
Comfortable residential layers
2700-3000 K often supports warm living and dining spaces. Kitchens and work areas may benefit from clearer task lighting, but consistency with adjacent rooms matters.
Do not assume dimming
The light source, LED driver and dimmer must be compatible. Confirm the required control method before purchase.
Broad, comfortable illumination for movement and room balance.
Directed light on counters, desks, mirrors or reading positions.
Narrower light on art, texture or architecture, kept subordinate to the task.
The visible fixture itself, evaluated for proportion both switched on and off.
06 / Installation brief
Check the ceiling, canopy and electrical system
- Record the total fixture weight and the approved mounting method.
- Identify concrete, masonry, timber, plasterboard or another substrate; decorative finishes are not structural support.
- Measure the canopy against the junction point, ceiling rose and moulding.
- Confirm whether cable, rod or chain can be shortened to the planned drop.
- Verify supply voltage, frequency, earthing or insulation class and light-source requirements.
- Check bathroom and outdoor fixtures for the required IP rating and installation zone.
- Plan access for lamp replacement, cleaning and future driver service.
- Keep the supplied instructions and all exact model information.
Stop and escalate
Use a qualified electrician or competent professional for fixed wiring, heavy fixtures, high ceilings, uncertain structure, wet locations or any mismatch between the product label and the intended supply.
07 / FAQ
Common sizing questions
Should I always choose the calculated diameter?
No. It is a starting point. Shade opacity, number of arms, ceiling height, furniture scale and the view into the room can justify moving up or down.
Can a pendant be wider than the dining table?
Usually keep the fixture inside the tabletop edges to reduce collision risk and preserve proportion. Sculptural exceptions require a deliberate clearance study.
How far apart should kitchen pendants be?
Use equal centre spacing within a defined composition zone, then confirm the real shade diameters and task coverage. There is no single spacing number for every island.
What matters most with a low ceiling?
Protect walking clearance first. Choose a shallow fixture, control glare and create interest through width, finish or layered wall lighting instead of a long drop.
Homepage forms for a scale comparison
Use these products to compare overall width, openness and visual weight. Confirm the dimensions, weight, canopy, voltage and installation method on the exact product page and selected variant.
Nordic Multi-tiered PH5 Pendant
A broad layered form that reads differently from an open frame.
View product →
Cecil Glass Cube Pendant
A compact geometric form suitable for testing repeated spacing.
View product →Measure the room before selecting a category
Start with the fixture family that suits the ceiling and task, then compare exact product dimensions against your completed brief.
