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Upgrading fluorescent ceiling lights to LED

David Doran's Avatar

Join Date: Feb 2003
Posts: 364

12-07-17, 05:36 PM   #1 (permalink)  
Upgrading fluorescent ceiling lights to LED

Have some 40 watt ceiling lights with tubes...be what, T-12...........can you change the bulb to LED in the same length, two prong?

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PJmax's Avatar
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Join Date: Oct 2012
Posts: 39,413

12-07-17, 06:45 PM   #2 (permalink)  
Yes.... the older tubes are T-12 (1.2" in diameter)

Absolutely. You can get replacement T-8 LED tubes that will fit directly in the T-12 sockets. There are two types of LED tubes available. One requires the ballast to be removed and the other one allows the ballast to be left in place. Removing the ballast would be the preferred method for the greatest energy savings.

Be advised that either type of replacement could require the sockets to need to be rewired. Not usually a problem as they come with diagrams.

~ Pete ~

Pilot Dane's Avatar
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12-08-17, 06:10 AM   #3 (permalink)  
I prefer the LED bulbs that are direct wire and work without a ballast. Ballasts can fail so as long as you are upgrading you might as well get rid of a possible future problem.

Most replacement LED's for fluorescent tubes are T8 size. The pins still match up and work perfectly with your T12 bases but you will notice that the body of the tube is smaller in diameter.

Pay attention to the color temperature of the bulbs you purchase. You might want a warm tone. Bulbs with a high color temp can appear cold or harsh. So, I would pick bulbs with a low color temp. Hopefully you can find something lower than 4'000k.

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