Toggles said:
I must say a gas dryer is a bit "greener" in most cases and pretty "transparent" to the user. (i.e. and ostensibly no different than an electric one).
Perhaps this is a good thing!
Ah... no, sorry. The newer dryers may look "transparent" because of the ignitor (older ones often made you deal with pilot lights that could extinguish etc). But that's where all the good ends. Gas dryers are more likely to break than electric dryers, and the breakdown is on the gas works, which is more dangerous than electric.
The combustion products of gas dryers pass thru the drum and clothes -- contrary to what people say ("It's just water and CO2"), the combustion products have nasty stuff in them even if in minute quantities; I know a few people who are allergic to the combustion products of gas, and they had to get rid of their gas stoves/ovens and they break in hives every time something dried in a gas dryer touches their skin. We're not gonna touch the "gas dryers have a reducing atmosphere in the drum that is detrimental to the clothes" thing (electric dryers have a neutral atmosphere) because a properly designed/functioning dryer should introduce enough air to make that moot, but many are not properly designed or are not properly functioning.
I will say that after owning several gas dryers, I got fed up enough with them (and, in particular, every once in a blue moon the gas from the main line had something nasty in it that would get my clothes yellow and foul smelling, not that that is is the fault of the dryer, but I've never had that problem with electric dryers) that I went electric and do not intend to switch back if I can possibly avoid it. Thanks, but no thanks.
If we ignore all that, I've recently found out on the web ("So it must be true...[tm]") that the true transmission losses for pumping gas are over 6%, which, when added to the poor efficiency of burners for stoves, put the efficiency of a gas stove at around 30-something percent, which is slightly lower than for an induction stove even after considering the losses in electric transmission lines and the poor efficiency of the average electric generation process. So I do not expect that gas dryers are much more efficient than electric dryers either.
Oh, and to top it off, gas dryers used to be much faster than electric dryers because they used to have high-powered burners in the 60's and 70's. Now, probably because of the auto-dry feature, gas and electric dryers are about the same speed. Not worth the bother to own one over an electric machine.
Cheers,
-- Paulo.