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Ask Mr. Tight-Watt: LED bulbs in an enclosed-globe fixture  Smart Choices Archive

Ask Mr. Tight-Watt: LED bulbs in an enclosed-globe fixture

Read the labels to be sure your LED bulb will work in your fixture.

Ask Mr. Tight-Watt

Mr. Tight-Watt gets lots of questions about lighting fixtures. Here’s another:

Question: Can LED bulbs be used in a fixture that has an enclosed globe? –From Bob, a Smart Choices reader

As he often does, Mr. Tight-Watt called on Rob Kirkpatrick, Service Concepts, to answer our reader’s question.

Rob’s Answer: I hate it when I have to say “it depends” – but in this case it does, and hopefully the package will give some guidance. 

Light Emitting Diodes (LEDs) don’t create a lot of heat, but tiny hot spots behind each diode need to have their heat effectively drawn off in order to preserve their useful life.  Each LED “bulb” is designed to ensure that heat is removed. Some are designed to do that well even when the nearby temperature is high, and others require good air circulation to help get rid of that small amount of extra heat. Therefore, some boxes, or right on the bulb, will say what the limit is. It could be “not for use in enclosed fixtures” or even something like “enclosed fixture required for outdoor use.” It really does depend on the bulb.

If there’s nothing on the package or bulb, for residential use (just a few hours a day), I’d be inclined to go ahead and use it as you wish. For a commercial application, on all day, I’d ask the supplier, and if they can’t give you a good answer (or get one), look for a more knowledgeable supplier.

More about LEDs from

Check out your electric cooperative's online store through Service Concepts.



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