If you've been exhibiting for more than a decade, you remember halogen arm lights. They were bright, warm, and familiar. The trade show industry has largely shifted to LED — but the reasons go beyond heat and energy savings, and halogen hasn't disappeared entirely from professional display applications.
Here is a direct comparison of LED vs. halogen for trade show applications, and what the differences mean for your booth setup and budget.
Heat Output
Halogen: Halogen lamps convert a significant portion of their energy into heat. After extended operation, the lamp surface reaches high temperatures. This has practical implications at trade shows: adequate clearance from fabric graphics and display materials is important, and some venue fire marshals restrict or require pre-approval for halogen lighting. Always check the exhibitor manual for your specific show before using halogen fixtures.
LED: A 16W LED fixture producing equivalent brightness runs at 40–60°C at the housing surface — warm to the touch but significantly cooler than halogen. This simplifies placement near fabric displays and generally requires no special venue approval.
Energy Consumption
Halogen: A typical halogen trade show arm light uses 50W–150W per fixture. Over a multi-day show, this adds up — and many venues charge for electricity by consumption.
LED: A 16W LED fixture producing more lumens than a 50W halogen uses significantly less power. For exhibitors running multiple fixtures across a show season, the electricity cost difference can be meaningful.
Brightness and Light Quality
Halogen: Halogen lights have a naturally high CRI (close to 100) because they produce a continuous spectrum of light. Colors look accurate and vivid under halogen — this is a genuine advantage for applications where absolute color accuracy matters, such as fine art or gemstone displays. The warm 2700K–3000K character also suits certain graphics and fabric backdrops well.
LED: Early LED lights had poor CRI (often 70–80). Modern LED fixtures rated CRI ≥ 90 match halogen color quality for the vast majority of trade show applications. The key is buying the right specification — not all LEDs are equal.
Lifespan and Lamp Replacement
Halogen: A halogen lamp lasts approximately 2,000 hours under normal conditions. In trade show use — with frequent packing, shipping, and unpacking — real-world lifespan may be shorter. Carrying spare lamps is standard practice for exhibitors using halogen fixtures.
One practical advantage: the lamp is user-replaceable. For display contractors maintaining existing halogen systems, this can be convenient when a compatible replacement is readily available.
LED: A quality LED fixture is rated for 50,000 hours. No lamp replacements, no spare lamp inventory to manage, no mid-show failures from lamp burnout.
Color Temperature Options
Halogen: Halogen produces a fixed warm white light, typically around 2700–3000K. This warm character suits certain display applications well — particularly fabric backdrops, warm-toned graphics, and traditional exhibition designs. It cannot be adjusted on-site.
LED: Available across the full color temperature range — 2800K through 6800K. Some fixtures offer tunable white for on-site adjustment. This flexibility is an advantage for exhibitors who need to adapt to different products, venues, or brand requirements.
Portability and Weight
Halogen: Halogen arm lights are typically heavier due to the transformer required. The transformer also generates heat, adding to the overall thermal load in a packed shipping case.
LED: LED drivers are compact and lightweight. A modern LED arm light typically weighs 30–40% less than an equivalent halogen fixture — relevant when shipping multiple lights to a show.
Side-by-Side Summary
| Factor | Halogen | LED (CRI ≥ 90) |
|---|---|---|
| Heat output | High — check venue requirements | Low — generally easier near fabric displays |
| Power consumption | 50W–150W typical | 16–25W typical |
| CRI | ~100 (natural spectrum) | ≥90 (engineered) |
| Lifespan | ~2,000 hours | ~50,000 hours |
| Color temperature | Fixed ~2700K (warm, traditional) | 2800K–6800K, tunable options |
| Venue compatibility | Check requirements before use | Generally accepted everywhere |
| Lamp replacement | User-replaceable lamp | Not required |
Frequently Asked Questions
Are there any situations where halogen is still relevant for trade shows?
Yes. Halogen remains a practical option for exhibitors with existing display systems built around halogen fixtures, applications where a user-replaceable lamp is preferred, or where the traditional warm light character of halogen specifically suits the display. Always confirm that halogen lighting is permitted by your venue before use.
My venue has halogen lights available for rent. Should I use them?
Venue-supplied halogen rental lights are typically older fixtures. If you exhibit frequently, owning your own LED fixtures is generally more cost-effective over a show season. If halogen rental is your only option for a specific show, confirm venue fire-safety requirements and ensure adequate clearance from fabric display materials.
Can I replace halogen bulbs in my existing arm light fixtures with LED bulbs?
Sometimes, but not always. Some halogen arm light fixtures can accept LED replacement bulbs. However, the driver and dimmer in the original fixture may not be compatible with LED, causing flicker or reduced lifespan. In most cases, replacing the entire fixture is more reliable than retrofitting.
For a detailed discussion of when halogen still makes sense, see: Halogen vs LED Trade Show Lighting: When Does Halogen Still Make Sense?
Ready to explore LED options? Browse our LED display arm lights or read our guide on how to choose the right fixture for your booth.
Compare Current LED Exhibition Fixtures
Review output, heat management, power demand and mounting formats across Trade Show Lighting. Halogen can still serve specific replacement or visual requirements, but it should not be treated as interchangeable with an LED fixture of the same nominal wattage.