Does anybody actually have incandescents (Tungsten) any more? If so then I would replace them instantly. When we moved back 'home' from the rental, I looked at a floor lamp my wife had been using as a reading lamp for about 3 hours a day. The bulb was a bit candle-shaped but blunt at the top, 'pearl' glass. I inspected it carefully and the rating of 150W was printed on it!
That leaves CFL's (flourescent) which are not as efficient as LED, and halogen, which from memory are nearly as bad as incandescents.
CFL's are probably about half as efficient as LED so hanging on to those for a while shouldn't be too bad. I'd go for immediate replacement on halogen or tungsten/incandescent.
Still, in these inflationary times anything you want to buy is quite likely to go up 10% or more next week. Lamps that you will use eventually are money in the bank. Probably nothing to be saved in the long run by hanging on to pre-LED.
Our rental house was nearly all CFL. The whole CFL era to me was like living in twilight. They had to warm up before they gave full brightness, then as they aged they seemed to get dimmer and dimmer.
The downlights I mentioned upthread aren't bad. They can be switched between warm white and cool white. I think ours are all set to warm white but I haven't checked and I'd have to take the bezels off to change them anyway.
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