If you happen to live in Japan then the Noritz tankless waterheater will be pretty much a household name to you. If you live in North American it may have passed you by. Noritz is the largest manufacturer of instant gas water heating units that there is.
When it comes to the world of the tankless gas water heater not many can stand up to the Noritz range. That said, it is a fairly tight range, offering a small number of top quality boilers to suit various needs and house sizes.
The Noritz tankless hot water heaters are sold nowadays through wholly owned subsidiaries of the Japanese mother company in the US, New Zealand the UK and Australia. This means dedicated country-specific support comes with these units, making them an excellent proposition.
The main way to choose from their range and arrive at the right gas tankless water heater is to go by capacity. All the units offer excellent efficiency ratings.
For all tankless waterheaters capacity is expressed in gallons per minute, and Noritz make it easy to understand which of their range meets your specific need - instead of going for names for their units Noritz use numbers that relate to their capacity. So the one with 63 in the title can handle 6.3 gallons each and every minute. The N132m can take on tasks of 13.2 gallons of demand per minute. Easy.