The Biden administration is tightening efficiency rules for water heaters, stoves and other appliances, and conservative politicians are dialing up their criticisms.
As discussed in section II.B.3, DOE is finalizing standards for all consumer water heaters, with the exception of gas-fired instantaneous water heaters, in this Final Rule.
So there has been no change to the rules for tankless heaters.
Per the actual rule:
So there has been no change to the rules for tankless heaters.
Believe It or not there are electrical tankless heaters. I actually installed one not too long ago because it made sense in a very odd application.
Mostly they’re a terrible idea though.
Yeah, they’re pretty rare and almost never the best option. I don’t think I’ve actually encountered one.