I think they are. Rinnai and Noritz are the top of the food chain. Either of these are gerat choices. However Rinnai has a better dealer network in place including Autthorized Service Providers than Noritz, at least in most of the country from what I can tell. Also Rinnai now had a 5 year labor warranty! THey both are high-end products that do a very good job. As always I recomend buying and having it installed by a trained dealer in your area and by getting it through their dealer network if anything goes wrong, you won't be chasing some phantom .com trying to get help. The Tankless 101 Articles has a lot more info on it.