I've never used an LED bulb in a vacuum cleaner that wasn't intended to have onem but I do like them. They offer a lot of flexibility in terms of tint. Some are warmer and others are cooler. It's an entirely different appliance, but a few years ago, a repair technician was replacing the control board (aka self-destruct system) in my Maytag refrigerator and pointed out that heat from the original incandescent bulbs had damaged the 'ceiling' of the fridge, so I replaced them with LED's and got the coolest tint I could find. Not only do they emit considerably less heat, they brighten up the interior considerably, eliminating the worst of the shadows cast by the incandescent ones. The best part is they came in a three-pack, which was exactly what I needed—two for the fridge and one for the freezer.