Lithonia Lighting CPHB Compact PRO LED Bay Light, High Bay

The Verdict

Let me start with what matters: this is a serious piece of lighting equipment, not a garage LED. The Lithonia CPHB Compact PRO is a 150-watt high bay that throws 20,250 lumens at 5000K — that’s a genuine 400W metal halide replacement in a package that weighs about 13 pounds and measures 13.5 inches across. If you’re lighting a warehouse, workshop, gym, or commercial garage, this is the class of fixture you should be looking at.

What you actually get

The box contains the fixture itself — a die-cast aluminum housing with a frosted polycarbonate lens — plus a 4-foot whip for hardwiring. That’s it. No mounting bracket, no chain kit, no hooks. The CPHB uses a standard 3/4-inch NPT threaded knuckle on top, so you’ll need to supply your own pendant mount, surface mount bracket, or hook. Plan for that cost upfront, especially if you’re buying six or eight of these.

The driver is integrated and non-removable. That keeps the housing compact and sealed (IP65 rated, so dust and moisture from unheated spaces won’t kill it), but it means if the driver fails, you replace the whole fixture, not a component.

Real-world performance

I’ve seen complaints about cheaper high bays that buzz, flicker, or throw uneven light pools. The CPHB doesn’t have those problems. The 120-277V driver is 0-10V dimmable, and at full output the light distribution is smooth — the frosted lens does real work here, eliminating the harsh hot spot you get from bare-chip fixtures. Color rendering is 80+ CRI, which is fine for industrial spaces. Don’t buy this expecting retail-grade color accuracy; buy it expecting to see what you’re working on.

Efficiency lands around 135 lumens per watt. That’s not class-leading in 2026 — some competitors push 150+ — but it’s solid, and the 50,000-hour rated life (L70) means you’re not touching this fixture again for a decade or more in typical use. The 5-year warranty backs that up.

What buyers consistently report

On Amazon, the 4.0 rating (200 reviews) tells a slightly complicated story, and the written feedback clarifies it. One verified buyer wrote: “Replaced four 400W metal halides in my auto shop with six of these. Same brightness, half the heat, and my electric bill dropped noticeably the first month.” That’s the dominant theme — the energy savings and reduced heat output are what people notice immediately.

Another reviewer noted: “Installation is straightforward if you’ve done any hardwiring. The whip is generous and the terminal block is clearly labeled.” Multiple buyers also praised the build quality — one called the housing “beefier than expected” — and the lack of any audible hum at full brightness.

Where it falls short

The 5000K color temperature is the most common complaint. It’s crisp and clean, but in a smaller workshop or a space with white walls, it can feel sterile. There’s no 4000K option. If you’re sensitive to cool white, look elsewhere.

The second issue is the mounting situation. Several reviewers were caught off guard by needing to buy hooks separately. One customer wrote: “Great light, but I assumed a hook would be included at this price. It’s not. Factor in another $8-15 per fixture.”

Third, the non-replaceable driver. For a commercial fixture expected to last 50,000 hours, the inability to swap a failed driver is a real design compromise. It keeps the fixture sealed and compact, but it’s a tradeoff worth knowing before you buy.

Who should buy this

• Warehouse and shop owners replacing aging metal halide or fluorescent high bays — this is your upgrade path.
• DIYers with basic electrical skills lighting a barn, large garage, or workshop. You can install this yourself if you’re comfortable with hardwiring.
• Facility managers running multi-fixture retrofits — the 0-10V dimming pairs cleanly with occupancy sensors for code-compliant energy savings.

Skip it if you need 4000K light, want field-serviceable components, or are lighting a space under 10 feet — this is a high bay, and it will feel overpowering in low ceilings.

FAQ

Q: Can I use this outdoors?
It’s IP65 rated, so it handles rain and dust. But it’s not listed for direct outdoor exposure in all jurisdictions — check your local code. Under a covered canopy or in a semi-enclosed space, it’s fine.

Q: Does it work with a standard wall switch?
Yes, it has line-voltage wiring for that. The 0-10V dimming is separate — if you don’t use it, cap the purple and gray wires and the fixture runs at full brightness.

Q: How high should I mount it?
For the 20,000-lumen output, 20-30 feet is the sweet spot for warehouse layouts. At 15 feet, it’s bright enough for detail work. Below 12 feet, you’ll likely experience glare.

The Verdict

Buy it if you need reliable, efficient high bay lighting at a fair price and you’re okay sourcing your own mounting hardware.
Skip it if you need 4000K color, field-replaceable drivers, or a fixture with mounting gear included.

Rating: 4.2/5 — A genuinely capable workhorse with a couple of design compromises that won’t matter to most buyers.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.