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The Navien NPE-210A2 is a condensing tankless water heater rated at 180,000 BTU with a built-in recirculation pump. It delivers up to 10.1 GPM at a 35°F rise and about 5 GPM at a 70°F rise, so it can run several fixtures at once in a large home. Dual stainless steel heat exchangers and a 0.95 UEF put it among the more efficient units in its class, and the internal pump gives faster hot water without a separate recirculation kit. It is a strong fit for big households or light commercial use; smaller homes can spend less on a lower-BTU unit.
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Owners of the NPE-A2 series praise steady hot water across multiple fixtures and the fast delivery from the built-in pump. Installers note the unit is well built but needs a properly sized gas line and careful recirculation setup.
The Navien NPE-210A2-NG is a wall-mounted, condensing tankless water heater rated at 180,000 BTU. It has a built-in recirculation pump that delivers hot water faster, with less waiting and less wasted water. It is designed for residential and commercial installs.
It has dual stainless steel heat exchangers and a uniform energy factor of 0.95. NOx emissions are 20 ppm. It can be installed indoors or outdoors and uses a forced draft direct-vent system.
