Your source for genuine replacement parts for Navien Tankless water heaters.

Tankless water heaters, also called instantaneous water heaters instantly heat water on demand.  Since there is no standing vessel of hot water that requires periodic firing, tankless water heaters are generally amongst the more efficient options for both residential and commercial use.

A world leader in this category is Navien.  KyungDong Navien (KD Navien) was founded in 1978 and in 1988 KD Navien became the first company in Asia to develop and produce a highly efficient, environmentally-friendly condensing boiler.  This quickly established the company as the leader in the condensing boiler market.  Navien manufactures the world's top efficient, energy saving and CO2 reducing water heating products.

In 2006, Navien, Inc., formerly Navien America, Inc. was established to open new markets in the United States and Canada for parent company KD Navien.  With countless Navien water heaters in the field there is the evergrowing need to maintain the life expectancy of these units.  While the life expectancy of a Navien tankless water heater is commonly 20 years or more, there can be component failure.  The flow sensors, printed circuit boards, neutralizers, blower motors, o-rings, pumps, fan assembly, flame rods, mixing valves and more may require replacing well before the heat exchangers become worn past a useful life. is an online store from an experienced and authorized wholesaler for Navien.  We stock an extensive inventory and our staff is trained to assist in the technical basics.  We can usually ship products the very same day.  Please be aware that products not purchased from an authorized distributor or from certain online channels may not qualify for technical support.  In addition, encourages all customers to register their products with Navien, Inc. so that owners will be entitled to complete warranty support. Register here.