My kitchen ceiling has six ventilated recessed lighting fixtures. The cfl bulbs would gradually turn to yellow light, then came an electrical smell and the bulb was done. The Philips customer service rep said the bulbs are not for recessed lighting fixtures because the heat will shorten their life. It didn’t say that on the Philips’ package, but it did on a Sylvania cfl package, also that light output will be reduced by 5% if used in base down position.
Our government has banned the manufacture of regular light bulbs, so I’ve started a small stockpile of good old fashioned G.E. light bulbs made in the USA. The Sylvania cfls with mercury are made in China which is probably a good thing.