Select Page
outdated cfl bulb

‘Old' CFL Bulb

This blog has been around long enough that I wrote about CFL bulbs when they were new.  Now, they're yesterday's news.  The newest standard is LED bulbs.  I've been having a debate about when to replace CFL with LED bulbs.  Read why.

Do You Replace CFL With LED Bulbs Before They Burn Out?

Way back when, in 2011, I started replacing incandescent bulbs with CFL bulbs when our electric company started subsidizing them.  Our local Home Depot offered them at about half price, with the electric company ‘paying' the difference.

Now, they're doing the same thing with LED bulbs.  They're on sale for a little over a buck per bulb.  That's really cheap, so I've been buying a few at a time (there's a limit per number of bulbs you can get in a transaction at a discount).

So far, I've been just bringing them home and letting them sit.  I haven't replaced any.  But I've been wondering what to do.  Should I replace CFL with LED bulbs now or wait until they burn out?

Wait To Replace CFL Bulbs

If I replace the bulbs as they burn out, then I'm getting full use out of them.  Though CFL bulbs have gone down in price, they still cost money.  Should I get full use out of them?

On top of the bulbs around the house in sockets, I've still got some that have never been used.

And, it's not like I can just throw them away.  CFL bulbs have mercury, so disposing them involves taking them to the hardware store, where they are somehow sent to be decommissioned safely.

Put In New LED Bulbs Now

On the other hand, maybe replacing them now isn't a bad idea.

After all, CFL bulbs do last for a few years.  So I could be waiting a good long time to replace them.  Since LED bulbs cost less to operate, getting full use might actually cost me money.

Keeping CFL bulbs because I already paid for them is an example of sunk cost fallacy.  The bottom line here is that the cost I spent for them has already occurred.  I'm not getting the money back either way.  Therefore, no consideration should be given to what I paid for the CFL bulbs.  I should only look at the cost impact starting now.  In that case, replacing the CFL bulbs would be to my advantage.

My Decision

I have sort of reached a decision, and it's sort of a hybrid.

I plan on replacing a good chunk of the CFL bulbs now.  We have ten lamps around the house that we use for many hours a day.  Two already have LED bulbs that I purchased a few years ago to see if I liked them.  I will replace the bulbs in the other eight.

In addition, we have a few overhead fixtures that get a lot of use.  I'll probably replace those too.

But, for lamps that we don't use all that often or for overhead lights that we don't use a lot, I'll keep the CFL bulbs in place.

We'll probably save a little money on the electric bill, which will be nice.  I figure it will probably take about 1-2 years to recover the cost of each bulb based on how much we have the lights in question turned on.

Plus, they're safer.  Lamps have been knocked down on occasion.  I know that people don't freak out like they used to about the levels of mercury inside a CFL bulb, but in the event of a broken bulb, no mercury is better than even a little bit, right?

led bathroom globe

LED globe bulbs are identified by the yellow filament inside.

The one set of bulbs we won't address now, but that I want to, are the bathroom bulbs.  We have the fixture that has the round globes.  Only recently have they started making LED versions.  Unfortunately those are still very expensive (about $4 per bulb) and not yet part of the subsidy.  We have three bathrooms with 15 bulbs total.  There's just no way I'm spending $60 to replace those light bulbs.

What Happens To The CFL Bulbs That Are Still Good?

With this strategy, we'll have a good stash of CFL bulbs that are still good.  Am I going to get rid of them?  No.  Not just yet.  I'll keep them for three purposes:

  • Lesser used lights – For the lights that we use occasionally, where we'll leave a CFL bulb, I'll just replace it with another as the existing bulbs burn out.
  • Garage door opener – The vibration of the garage door opener burns out the lights inside pretty quickly.  I assume that it would chew through LED bulbs just as fast.  The CFL bulbs would be just fine for this purpose.
  • Spares – You never know when you need a backup bulb.  Having something is better than having nothing.

Have You Switched To LED Bulbs Yet?

Readers, what have you done? Have you made the switch to LED bulbs yet? Are you still using CFL bulbs? Or did you manage to stock up on incandescent bulbs before they were banned and still use those?