Can Any LED Bulb Be Used Outside? What I Wish I Knew Before Our Facility Lighting Upgrade

The Purchase Order That Started It All

In early 2024, I got a request that seemed straightforward: upgrade the outdoor lighting around our office campus. We're a 220-person company across two buildings, and our parking lot and walkway lights were aging. Flickering bollards, a few dead wall luminaires, and one very dark stairwell that people kept complaining about.

My background? I manage procurement across roughly a dozen vendors—office supplies, janitorial services, furniture, the usual. Lighting was new territory. I figured: you buy lights, someone installs them, done. I'd handled printer toner for five years. How different could this be?

I want to say I'm exaggerating when I tell you it took six months, three vendor calls, and $3,400 in replacements before I understood what I was actually buying. But I'm not.

What I Thought the Problem Was

Here's the thing about outdoor lighting from a non-specialist's perspective: it looks like a solved problem. You go online, search "bega lamp" or "bega light fixtures" because that's the brand the facilities manager mentioned, and you find thousands of results. Some are cheap. Some are expensive. They all look like metal boxes with glass.

My first assumption was that the main challenge was aesthetics. Will the bollards match the building facade? Are the wall luminaires too modern or too traditional? I spent maybe two weeks going back and forth on style, finish, and beam angle—things I now realize are secondary.

My second assumption—and this is the one that cost us real money—was that the light source was standardized. I'd been told "LED is LED." That, as it turns out, is dangerously incomplete.

The Deeper Issue: It's Not About the Bulb, It's About the System

Fast-forward four months. We'd installed a mix of step lights, path lighting, and a few wall-mounted downlights. Then winter hit. And within eight weeks, six fixtures failed completely. Two others were dimming to maybe 40%. The electrician we'd hired (who, to be fair, is a solid guy but not a lighting specialist) was stumped.

Here's what I didn't understand: outdoor fixtures aren't just "lights that go outside." They're integrated systems where every component depends on the others.

Three things were happening simultaneously:

• Ingress protection wasn't sufficient. We'd used IP65-rated fixtures in a location where path lights sit in standing water after heavy rain. IP65 means "dust-tight and protected against water jets"—not "submersible." For that, you need IP67 or better. I didn't know the difference until I spent an hour on the IEC 60529 standard, which is genuinely tedious. But the gist: the second digit tells you water resistance. 5 is splashing. 7 is immersion. 6 is temporary submersion. These matter.
• Drivers weren't matched to the fixture. Every LED fixture has a driver—the component that regulates power. In many inexpensive units, the driver is sealed inside the housing with no ventilation. When water eventually gets in (and it will, unless the seal is perfect), the driver corrodes. Then the fixture dies even though the LED itself is fine.
• Heat was trapped. LED bulbs generate heat directly at the emitter—unlike incandescent, where heat radiates away from the bulb. In outdoor fixtures with tight enclosures, that heat builds up. I can't find the exact figures now, but I recall reading that a 10-degree temperature increase can cut LED lifespan by half. In a sealed bollard, you're essentially cooking your own investment.

And here's the part that really annoyed me: none of this is hidden knowledge. It's all in the spec sheets. But when you're comparing 15 products across 4 vendors, every spec sheet starts to look the same.

What It Actually Cost Us

Let's be specific, because I think that's what makes this real: the replacement fixtures and second installation ran about $3,400—$1,800 for hardware, $1,600 for labor. We'd originally budgeted $8,000 for the entire project. We ended up spending $11,600.

But the dollar figure isn't the whole story. There's also the reputational cost. When the parking lot lights failed during a client visit in February, my VP sent me a two-line email that just said: "Can we talk about the lighting situation?" That's never a good sign.

The electrician—who, again, wasn't at fault, but had inherited the spec I gave him—offered to redo the installation at cost. He didn't have to. I think he felt bad because he could see I genuinely didn't know what I'd asked for.

And then there's the timeline. What should have been a two-week project took six months from first search to final fix, mostly because I had to learn a new procurement category from scratch while managing my regular workload.

The Lesson: Specification-Grade Is Not a Marketing Word

After the mess, I reached out to a colleague at another company who manages facilities for a 400-person campus. She laughed when I told her the story. "You bought components instead of systems," she said. That stung, but she was right.

What I should have done from the start: treat outdoor lighting procurement the same way I treat buying a commercial-grade printer. You don't buy the cheapest paper and then wonder why it jams. You match paper to printer to usage volume.

For outdoor lighting, that means:

• Start with the environment. Is this fixture near a sprinkler? In a flood-prone area? Exposed to salt air (if you're near the coast)? That determines your IP rating and housing material.
• Ask for the driver spec separately. If a vendor can't tell you who makes the driver and what the rated life is, that's a red flag. It doesn't have to be brand-name—ours were from a Taiwanese manufacturer I'd never heard of—but the spec should be clear.
• Check whether the fixture is serviceable. Can you replace the driver? The LED board? Or is it a sealed unit that gets thrown away when anything fails? The answer affects your five-year cost.

I'm not going to pretend I'm an expert now. I'm not. I can only speak to our situation—two buildings, moderate climate, no extreme weather. If you're in a coastal area or somewhere with heavy snow load, the calculus is different.

The One Thing I'd Do Differently

If I could go back, I'd skip the spreadsheets and find one decent lighting consultant—or at least a contractor who specializes in outdoor lighting—and pay them $500 to review the spec before I ordered anything. That $500 would have saved me nearly $3,000 and a lot of awkward conversations.

The other thing: I'd stop treating "light bar" and "luminaire downlight" as interchangeable search terms. They're not. A light bar (or striplight) is usually linear and surface-mounted; a downlight is recessed and directional. In outdoor settings, the difference affects both performance and how the fixture handles water. Searching generically gets you generic results, and generic results are what got me here.

We eventually replaced the failed units with properly rated fixtures—IP66 for the path lights and IP67 for the step lights. The wall luminaires we kept, but I upgraded the drivers. Total cost for round two: about $2,800. Less than I expected, honestly. The hardware we chose this time was from a brand called Bega, which kept coming up in my searches but that I'd initially dismissed as "too expensive." Turns out the price gap wasn't as wide as I thought once I compared apples to apples—same IP rating, same driver quality, same warranty terms.

"Cheap isn't the same as inexpensive. We paid twice for the same project because we bought for price instead of for the environment the lights would live in."

If you're an admin or office manager who's been asked to "just replace the outdoor lights," do yourself a favor: spend an afternoon reading about IP ratings and LED driver basics before you call a vendor. It's tedious. But it's a lot less tedious than explaining to your VP why the parking lot is dark again.