T8 Retrofit; Instant vs. Programmed Ballast

ceburyOctober 19, 2011

I'm retrofitting my T12 to T8 florescent bulbs and changed several already. In my kitchen, the T12 bulbs (old magnetic rapid-start ballasts) last around 2 years each. They aren't on "all day" like an office, but they aren't on/off like a hallway light: probably closer to on/off than all-day since we are home during the day.

Some say "T8+Instant Start = Death to the bulb unless it's hardly ever cycled, like no more than 2x/day". Wondering how much of that is truth, my question is:

If I switch to electronic Instant Start ballast and use T8 bulbs, how much reduced lifespan could I expect? (Obviously nobody knows for sure, I was thinking along the lines of "A lot" vs "not much").

I'm debating on upgrading the ballasts to 2x expensive Programmed Start instead of the Instant Start.


Thank you for reporting this comment. Undo

imo, it doesn't matter all that much. I haven't had to replace a T8 in 3 - 4 years (yet) even though the light is connected an electronic instant start ballast and the duty cycle ~ 3x/ day.

    Bookmark   October 19, 2011 at 1:01PM
Sign Up to comment
More Discussions
Kitchen light fixture inadequate.
I love school lights but I need at least 400 watts...
Anne Jones
Which would you pick for an LED step light / night light
We are in the rough-in stage of our new build, and...
Questions re: installing a linear light fixture with a sloped ceiling
I'm interested in a chandelier from the Kichler Triad...
If we need to do smaller 3 inch recessed lights in a shower ....
Hi everyone, We are trying to work out if we can put...
What should be dimmable in my kitchen?
We are doing a kitchen renovation, and like most new...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™