Is a condensing gas tank water heater what we in the UK would call a condensing boiler? If so, in the UK, it's been legally required that all new boilers are o

Is a condensing gas tank water heater what we in the UK would call a condensing boiler? If so, in the UK, it's been legally required that all new boilers are of this type since 2005. I'm a little bit surprised they aren't better known in the US.