A Procurement Manager’s Honest Cost Comparison: Philips LED Tube Light Type A vs Type B

Type A vs Type B: The Real Cost Isn't What You Think

When I first started managing lighting upgrades for our 40,000 sq. ft. office, I assumed the cheapest initial quote was the winner. Six years and $180,000 in cumulative spending later, I've learned that the opposite is true more often than not. So when it comes to Philips LED tubes, the Type A vs Type B decision isn't just about the bulb price — it's about total cost over the life of the installation.

Here's a breakdown based on quotes I've tracked from 12 vendors over three major retrofits, and what the numbers actually say when you factor in hidden costs.

Dimension 1: Initial Installation Cost – Type A Wins on Paper, But…

Type A (ballast-compatible) tubes are literally plug-and-play. You remove the old fluorescent tube, pop in the LED, and done. Labor cost: almost zero if you do it yourself, or maybe $50-100 per fixture if you hire an electrician for the whole floor. The tube itself costs about $8–12 each (Philips 14W T8).

Type B (ballast bypass) requires rewiring: remove the ballast, connect line voltage directly to the tombstones. That's $20-40 per fixture in electrician time plus the tube cost ($7–10 each, slightly cheaper upfront). A 100-fixture retrofit suddenly means $2,000–4,000 in labor.

“The numbers said go with Type B—15% cheaper per tube. My gut said stick with Type A. I went with my gut. Turns out the 'savings' from Type B got eaten by labor and compliance paperwork I hadn't accounted for.”

First glance verdict: Type A looks cheaper. But that's only the installation phase.

Dimension 2: Energy Efficiency – Type B Takes the Lead

Here's where it gets interesting. Type A tubes still use the existing ballast, which draws a small amount of parasitic power (typically 2–4 watts per ballast). Type B eliminates that entirely. For a typical 32W T8, the difference:

• Type A (with electronic ballast): actual fixture draw ≈ 18W (tube) + 3W (ballast) = 21W
• Type B (ballast bypass): actual fixture draw ≈ 17W (tube only)

That 4W per fixture adds up. Over 200 fixtures running 10 hours/day, 260 days/year, at $0.12/kWh:

Type A annual electricity cost: 200 × 0.021 kW × 2600 hrs × $0.12 = $1,310
Type B annual electricity cost: 200 × 0.017 kW × 2600 hrs × $0.12 = $1,061

Type B saves about $249 per year in electricity alone. Over a 50,000-hour rated life (~19 years at our usage), that's $4,731 in cumulative energy savings. More than enough to cover the higher installation cost.

Dimension 3: Maintenance & Reliability – The Hidden Cost Trap

Type A's Achilles' heel is the ballast. It's an extra component that can fail. In our 2019 retrofit, we had 12 ballast failures in the first 18 months. Each failure meant: $20 for a replacement ballast (often hard to find years later), plus $60 in labor (electrician call-out). That's $960 in unplanned expenses. With Type B, there's no ballast to fail. The tube itself just dies silently when its LED chips reach end of life (usually 50,000+ hours).

To be fair, Type A tubes are more forgiving if you still have old magnetic ballasts—they'll work, but with slightly lower efficiency. Type B requires a clean rewire, so if you mess up the wiring, you get a dead fixture.

But here's the unexpected surprise: When I audited our 2022 spending, the biggest cost wasn't electricity or parts. It was the time I spent troubleshooting flickering fixtures. Type A intermittent flicker from aging ballasts drove my maintenance team crazy. Type B is rock-solid.

Dimension 4: Compatibility & Future-Proofing – Type A Offers Flexibility, Type B Locks You In

This is where my numbers conflicted with intuition. I assumed bypassing the ballast was the smarter long-term play. But consider: if you go Type B, you can't ever go back to fluorescent. If your facility manager later wants to switch to a different LED technology (like a smart tube with wireless controls), you'll need to rewire again. Type A lets you keep the ballast infrastructure, so you can swap between fluorescent and LED at will.

In a recent RFP for a 500-fixture warehouse, we had to decide between:
- Type A (no rewiring needed, tube cost $9.50 each, but ballast life unknown)
- Type B (rewiring at $35/fixture, tube cost $8.20 each)
The spreadsheet said Type B saved $6,850 over 5 years. But my gut said: “What if we want to add dimming or daylight harvesting in 3 years?” That would require new drivers anyway. I went with Type B for the warehouse (high ceilings, less frequent changes). For the office, I chose Type A—easier to upgrade later.

The Bottom Line: When to Choose Each

Based on managing three large retrofits and tracking every invoice in our procurement system (yes, I have a spreadsheet going back to 2018):

Choose Type A (ballast-compatible) if:

• You have functional electronic ballasts in good condition
• You need the flexibility to revert or change technology soon
• Your labor costs are high and you want minimal downtime
• You're in a tenant space where you can't modify the electrical

Choose Type B (ballast bypass) if:

• You're committed to LED for the long haul (5+ year horizon)
• Your ballasts are old or failing (replace them anyway)
• Energy savings are a priority and you want maximum efficiency
• You own the building and can make permanent modifications

I get why people default to the cheapest upfront quote. Budgets are real. But the $3,000 you save today by choosing Type A over a full rewire could cost you $5,000 in energy and maintenance later—or you could invest that $3,000 upfront for Type B and pocket $4,700 over the next decade. Run your own numbers; I built a simple calculator after getting burned on hidden fees twice. If you want a copy, I'm happy to share—but honestly, the biggest lesson is: never decide based on one dimension.

Final note: If you're considering Philips Hue smart lighting (the strip or bulbs) for a commercial setting, that's a different conversation—mostly for ambiance and controllability, not cost savings. The TCO there leans heavily toward Type B if you're pairing with a motion sensor system. But that's a topic for another spreadsheet.