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How long do energy saving light bulbs take to "warm up"?
Photo by Anton Belashov / Unsplash
The latest compact fluorescent lamps "warm up" very much faster than older designs, typically reaching 95% of their full light output in under a minute.
Isabel Davies
3rd December 2025
BLT suggested an alternative light bulb for one that had been discontinued which meant I didn't have to replace the fitting, very helpful, thanks
Mark Wilson MBA
1st December 2025
Fast effective and efficient delivery, very pleased with the service! 5 Stars
