Halogen and LED bulbs can serve similar fixtures, but their energy use, heat output and control requirements differ. For wholesalers and project buyers, the best comparison considers performance in the actual fitting alongside purchase price.
1. Halogen and LED: The Main Differences
| Buying factor | Halogen bulbs | LED bulbs |
|---|---|---|
| Energy use | Higher power consumption for comparable light output. | Generally need less power; compare actual watts and lumens. |
| Heat | Produce substantial radiant heat and operate at high temperatures. | Generally produce less heat for comparable light output, but still require effective heat dissipation. |
| Service life | Generally shorter life and more frequent replacement. | Generally longer life; actual results depend on the lamp, temperature and operating conditions. |
| Light appearance | Typically warm light with strong color fidelity. | A choice of color temperatures and CRI levels, depending on the model. |
| Dimming | Many models support dimming with suitable controls. | Require a dimmable model and a verified compatible control system. |
2. Compare Brightness Before Calculating Savings
Watts measure power consumption; lumens measure light output. A lower-wattage LED is a suitable replacement only when its output and light distribution meet the application. For reflector lamps, also compare beam angle and illumination on the target surface.
Illustrative energy calculation
For 100 lamps operating at full rated power for 6 hours per day, 365 days per year:
- 20W halogen lamps: 4,380 kWh per year.
- 4W LED lamps: 876 kWh per year.
- Difference: 3,504 kWh, or 80% less lamp energy.
This example compares energy use only and does not establish brightness equivalence. Verify replacement performance separately. External power-supply losses, controls and maintenance costs are excluded.
3. Match Color and Check Heat Conditions
For a familiar warm appearance, compare LED options around 2700K-3000K. Review CRI 80-90 options against the project brief and assess samples beside the actual furnishings or merchandise.
LED does not mean heat-free. Restricted ventilation can affect performance and service life. Use a lamp explicitly approved for enclosed fixtures where required, and follow its operating limits.
4. Confirm Fit, Voltage and Dimming
Check the exact base, rated voltage, AC/DC requirements and lamp dimensions. G4, G9 and other base types are not interchangeable, and an LED replacement may be larger than the original capsule.
For low-voltage fittings, verify transformer compatibility and the intended lamp count. If dimming is needed, test the complete lamp, dimmer and transformer combination where applicable. Review startup, dimming range, visible flicker and audible noise.
5. Make the Purchase Decision Using Tested Samples
For frequently used decorative, residential and hospitality lighting, a compatible LED is usually a practical choice for reducing energy use and replacement work. Specialist equipment may require a specified lamp type, so confirm manufacturer approval before conversion.
- Approve samples in the actual fixture and control system.
- Record the agreed electrical, dimensional and lighting specifications.
- Compare purchase cost, electricity use, installation changes, warranty and maintenance access.
- Confirm model-specific documentation for the destination market before approving a bulk order.
