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How to Choose LED High Bay Lights for a Warehouse

2026-07-08

How to Choose LED High Bay Lights for a Warehouse

If you're lighting a warehouse, the first thing to get right isn't wattage — it's knowing how much light actually needs to hit the floor. We see a lot of RFQs that say "quote me 150W high bays," and when we ask what lux they need, the answer is often a guess. That guess costs money. Too much light wastes energy. Too little creates dark zones where forklift drivers miss pallet labels — or worse, each other.

So start with the application. EN 12464-1 gives you a clear framework: bulk storage with low activity only needs 100–150 lux. General warehousing with forklift traffic wants 200–300 lux. Picking and packing zones, where someone is reading labels all day, need 300–500 lux. If you've got a quality inspection corner in the same warehouse, that area alone might need 500–750 lux. The point is, don't light the whole 5,000 sqm uniformly if different zones do different jobs.

Once you know your lux targets, matching mounting height to the right wattage and beam angle is what separates a decent install from one where half the light never reaches the work plane. Here's what we typically recommend:

4–6 meter ceilings: 100W with a 120° lens, fixtures spaced about 4–5 meters apart
6–9 meters: 150W, tighten to 90°, 5–6 meter grid
9–12 meters: 200W at 90°, 6–7 meter grid
12–15 meters: 240W, drop to 60° or stick with 90° depending on your racking layout
Above 15 meters: 300W+, and you're going to need a proper optical design, not an off-the-shelf lens

One thing that surprises buyers: above 12 meters, the beam angle matters more than raw wattage. We've put 240W fixtures with a well-designed 60° lens up against 300W fixtures with a generic 120° lens on the same ceiling grid, and the 240W actually delivered more lux on the floor. The light was going where it was supposed to, not scattering into the rafters.

Optics matter more than most people realize

If your warehouse has tall racking, the standard round Type V distribution (symmetrical, light spreads evenly in all directions) isn't always the best call. Type III throws light into medium-wide aisles — about 2 to 3 times the mounting height in width — which covers most racking layouts nicely. For narrow aisles between tall racks, Type II is worth looking at. And if you want light to actually hit the faces of the racks so people can read labels at height, asymmetric optics aimed at the rack faces can improve vertical illuminance by 40–60% compared to a standard downlight pattern. That's the difference between someone climbing a ladder with a flashlight and just glancing up.

CRI — don't overpay for what you don't need

CRI 80 is fine for most warehouses and logistics centers. The task is navigation and identification, not color matching. Bump to CRI 90 if you're in food processing, textile inspection, or anywhere someone needs to judge colors accurately. The premium for CRI 90 is about 10–15% on the fixture cost. Worth it when you need it, wasted money when you don't.

IP ratings and the real world

For a clean, dry indoor warehouse, IP44 does the job. But we default to IP65 for anything in a humid region, any space that gets washed down, cold storage (condensation is brutal on electronics), or dusty environments like cement plants and grain storage. The IK rating matters too — forklifts happen. IK08 means the fixture can take a stray impact and keep working. If your lights are mounted low enough to be within reach of machinery, go IK08 or higher.

Controls are where the real savings live

A good LED fixture cuts energy by 50–60% compared to the old metal halide it replaces. But adding smart controls cuts another 30–60% on top of that. The payback on controls is often faster than the payback on the LED retrofit itself.

0-10V is the simplest and cheapest. It's a pair of low-voltage control wires, dims per zone, compatible with almost everything. If you just need three or four zones in a warehouse, this is the pragmatic choice.
DALI gives you per-fixture addressability — you can re-zone without touching a wire. Costs more and needs commissioning, but in a 5,000 sqm facility where the layout might change, the flexibility pays off.
Zigbee or Bluetooth Mesh makes sense for retrofits where pulling new control cables is impractical. You lose the wires but gain reconfigurability from an app.
Microwave motion sensors built into the fixture are the no-brainer. Aisles that see traffic 30% of the time can see 60–70% energy reduction just by dimming when nobody's there. No external controller needed.

Drivers and chips — the stuff that determines whether the light actually lasts

We've written a separate deep dive on drivers (see our Meanwell vs MOSO vs Sosen comparison), but the short version: the driver fails before the LED chip does, every time. Specify the exact driver model in your purchase order. "Meanwell driver" isn't enough — you want "Meanwell HLG-240H-48B." If a supplier won't commit to a specific model number, they're reserving the right to substitute.
For chips, Bridgelux is our default for CRI 90 projects — they're consistent batch to batch. Philips Lumileds gives you the highest efficacy numbers. Osram handles heat best, which matters in a warehouse roof cavity in summer.

How to Choose LED High Bay Lights for a Warehouse 1

Four questions to ask before you place the order

1. "Send me the IES file for this fixture." If the supplier can't produce a photometric test file from an accredited lab, walk away. A real manufacturer has these on hand.

2. "What's the L70 at Tc 75°C, not just at 25°C?" LEDs degrade faster when they run hot. A fixture claiming 50,000 hours L70 at a cool 25°C ambient might only manage 35,000 hours inside a warehouse ceiling that hits 40°C in August. The number at actual operating temperature is what matters.

3. "Show me a thermal image of this fixture after two hours at full power." You want to see that the heat sink is pulling heat away from the LEDs effectively. If the LED solder point is way hotter than the heatsink fins, the thermal path is broken somewhere.

4. "Which third-party lab did the LM-79 and LM-80 testing?" Acceptable answers: TÜV, SGS, Intertek, UL, DEKRA. If the answer is "our in-house lab," ask again.

How to Choose LED High Bay Lights for a Warehouse 2

We're Xiamen Longing for Light, an LED solution provider based in Xiamen, China. Our UFO high bays run 100W to 240W, IP65 rated, with Meanwell drivers and Bridgelux or Philips chips as standard. We do DIALux simulations before you order so you know the light levels you'll get before the container leaves. If you're working on a warehouse project and want to talk through the specs, get in touch.

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