Korean brand Navien strives to constantly improve the efficiency of its range of ... variant is the standard continuous-flow tankless water heater. In contrast, non-condensing models recycle ...

Last year, the stock price of Kyungdong Navien ... the instantaneous water heater market, the share reaches 30% to 40%, indicating a significant presence. The high thermal efficiency compared ...

The former usually has two heat exchangers while the latter has one, manufacturer Navien ... produced tankless gas water heaters that become available for sale in 2029 more efficient.