Navien nr 180 problems. Navien was the first manufacturer to bring commercial-grade whole-house heating and advanced domestic hot water capabilities to larger homes — providing homeowners with a variety of solutions that are powerful, efficient, and eco-friendly. Professionals specify and install Navien tankless water heaters and boilers for their ease of installation, ultra high efficiency and industry leading warranty. Navien's water heaters, boilers, hydro-furnaces & water treatment solutions provide innovative high-efficiency technology for residential & commercial projects. Whether you want the impressive energy savings of a water heater with the latest in heat pump technology or the ultra-high efficiency and uninterrupted flow of tankless, Navien has a water heater that fits your home and lifestyle. Navien's water heaters, boilers, hydro-furnaces & water treatment solutions provide innovative high-efficiency technology for residential & commercial projects. . The result is a reduction in energy consumption, lower CO 2 emissions and low exhaust temperatures allowing the use of less expensive venting materials such as Schedule 40 PVC. Navien condensing stainless steel heat exchangers recover extra heat that would be lost in non-condensing combi boilers. Navien technical support offers coast to coast coverage with two world class support centers and live technicians providing the help you need, when you need it. Navien's NPE-A2 condensing tankless water heaters include a patented built-in buffer tank, recirculating pump & fine-tuned controls for comfort & convenience. No waiting for a tank to reheat more water, wasting time and energy. Navien premium non-condensing tankless water heaters deliver a continuous flow of hot water for as long as you need it. vocc yslyadtl vyeell dbtt uliyf ggjclq jiaw baimsf qpomz woj