Wall Pack vs Flood Light: A Procurement Manager's 6-Year TCO Breakdown

I've been buying exterior lighting for two commercial properties for the past six years—one a 12-acre industrial park, the other a strip mall with about 40 tenants. In that time I've approved, returned, and re-approved enough fixtures that my procurement spreadsheet has a tab just for exterior lighting. It is not a small tab.

The question I get most often from other facility managers is some version of: wall pack or flood light? On paper it sounds like a simple spec call. It isn't. Not when you factor in install, controls, maintenance access, and what I call the "nobody-told-me" line items. Here's the framework I actually use when I sit down to compare them.

The four dimensions that actually decide it

Before I get into the numbers, let me save you some scrolling. When I compare wall packs and flood lights for a site, I look at four things: (1) coverage geometry, (2) upfront and install cost, (3) controls compatibility, and (4) long-term maintenance access. Anything else—lumen output, color temp, warranty terms—matters, but it usually ties or becomes a spec detail you can specify your way out of. These four are where the two fixture types genuinely diverge.

Dimension 1: Coverage geometry

A wall pack mounts on a wall and throws light down and outward. A flood light mounts where you can aim it—could be a wall, a pole, a canopy—and pushes a focused beam to a target area.

What most people don't realize is that the two aren't really interchangeable at the site level, even though they show up in the same procurement categories. Wall packs are perimeter fixtures. Flood lights are target fixtures. If you're lighting the side of Building C so nobody trips on the loading dock, that's a wall pack job. If you're lighting a parking field from a 20-foot pole, that's flood light territory. I've watched a property manager try to use flood lights for building perimeter security and end up with glare complaints from neighboring tenants within a month.

Bottom line for this dimension: match the fixture to the geometry, not to the price sheet.

Dimension 2: Upfront and install cost (the surprising one)

Here's the part that surprised me the first time I ran the numbers properly. On a per-fixture-unit basis, wall packs usually cost more. But on a total installed cost basis, wall packs frequently come out ahead.

The reason is installation. A flood light on a pole needs the pole, the base, the footing, the conduit run back to a power source, and often a licensed electrician for the whole chain. A wall pack mounts to an existing wall, ties into whatever circuit is already there, and in a retrofit scenario often reuses the box from the fixture it's replacing.

When I audited our 2023 exterior lighting spend, I pulled every invoice for the industrial park. The flood light retrofit on the north lot—six fixtures, one new pole, new conduit—came in around $14,800 installed, or roughly $2,467 per fixture. The wall pack retrofit on the east building—eleven fixtures, no new poles, existing circuits—came in at about $16,900 installed, or $1,536 per fixture. Per unit, the wall packs looked cheaper to install. Per lumen delivered to the ground, they were almost identical. That's the kind of math that doesn't show up on a vendor quote.

So the practical rule: if poles and trenching are involved, price the whole project, not the fixture. If you're replacing existing wall fixtures, the wall pack almost always wins on install.

Dimension 3: Controls compatibility

This is where the two fixtures really separate, and it's the dimension most buyers underweight.

Wall packs are usually specified with an integral photocontrol or a built-in dimming module. Flood lights—especially the cheaper ones—often have no photocontrol interface at all, which means you're adding a separate relay, a time clock, or a contactor panel. That's a change order waiting to happen.

When I looked at Acuity Brands' DTL dark-to-light photocontrols for our wall pack retrofit, the draw was that the controls are integrated at the fixture level—no separate panel, no extra labor line. The DTL line is what Acuity builds specifically for dark-to-light switching, and for a site like ours where nobody's on property at night, that matters more than the fixture's lumen count. We paired the wall packs with those controls and cut our manual override calls to zero in the first quarter.

I'm not going to pretend every site needs that. But if you're comparing a wall pack against a flood light for a dark-to-light application, add the cost of the external control solution to the flood light side of your spreadsheet before you decide. That's the honest comparison. The Acuity Brands lighting operation out of Conyers, GA, was also where our distributor pulled most of the controls inventory, which cut two weeks off our lead time versus the pole-mount flood lights we'd been waiting on. Lead time is a cost, even if it doesn't show up on the invoice.

One caveat, and this is the "don't do what I did" part: I initially specified a cheaper flood light with an external photocell for the south lot, thinking I'd save about $60 a fixture. The install added a relay box and a second electrician visit. Total delta was closer to $180 a fixture after labor. I've since stopped trying to save money by unbundling controls. The integration is the value.

Dimension 4: Long-term maintenance access

Here's the counterintuitive one. Wall packs are harder to service—they're mounted high on walls, often above a loading dock or a landscaped bed, and you need a lift or a ladder setup that satisfies OSHA. Flood lights on poles can be worse, depending on pole height and whether the site has overhead access.

For our two properties, the wall packs became the maintenance headache, not the flood lights. Three of the eleven wall packs needed driver replacements in year three, and each one required a scissor lift rental. That's a $400-per-visit line item I didn't put in my original TCO. In hindsight, I should have specified a fixture with a hinged door or tool-less access for the driver. The flood lights, ironically, were easier—the pole had a winch system, so the electrician could lower the fixture head without a lift.

If I could redo that decision, I'd add "service access method" as a required spec field. But given what I knew at the time—nobody warned me—the spec was reasonable. It just wasn't complete.

So which one should you buy?

Scene-specific, honestly:

• Go wall pack if you're lighting a building perimeter, a loading area, or an entry, and you can tie into existing wall circuits. Pair it with a DTL-class photocontrol if the site runs unattended at night. Budget for lift access on driver replacements.
• Go flood light if you're lighting an open area—parking field, yard, sign—and you need distance and aimability. Price the pole and trenching into the comparison before you commit. Make sure the controls question is answered at the quote stage, not the install stage.
• Go both if your site has mixed geometry. This is what we ultimately did at the strip mall: wall packs on the building faces, flood lights on two poles in the parking field. The split ran about 60/40 on fixture count and roughly even on total installed cost, which was the best outcome of the three.

And one thing I want to be clear about, because I've been asked it and I think it's worth saying out loud: my framework is for commercial and industrial exterior lighting. If you're looking for a Batman spotlight or a phantom chandelier—decorative, themed, or statement pieces—that is a completely different purchasing problem. Different supply chain, different resale dynamics, and frankly a different skill set than mine. I'd point you toward a decorative lighting specialist rather than pretend my TCO spreadsheet applies. Knowing where my expertise stops is the main reason the rest of my recommendations hold up.

The bottom line after six years of invoices: the wall pack vs flood light question is really a "what's the geometry and what's the controls plan" question in disguise. Price the whole installed system, not the fixture box in the catalog. That's the comparison that actually pays off.