Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The Navien NPE-240S2NG is a condensing tankless water heater with a 199,900 BTU/h maximum input and dual stainless steel heat exchangers. It delivers 11.2 GPM at a 35°F rise and 5.8 GPM at 67°F, so it can run several fixtures at once in a large home. Its 1/2-inch gas pipe capability up to 24 feet and 2-inch PVC venting up to 75 feet simplify retrofits where other units need larger gas lines or stainless venting. A field-convertible gas system and included LP kit let one unit serve natural gas or propane, and up to 12 units can be common-vented for larger systems.
In stockReturn policy
Owners of Navien NPE-S2 units generally report strong, steady hot water for multiple fixtures and quiet operation. Installers favor the flexible gas and venting options. Complaints center on control board and error-code issues and the need for regular descaling.
The Navien NPE-240S2NG is a high-efficiency condensing tankless water heater with a Uniform Energy Factor of 0.96. It has dual stainless steel heat exchangers and low NOx emissions of 20 ppm. Several units can be cascaded.
It is a forced draft, direct-vent unit with electronic ignition. It mounts on a wall, indoors or outdoors. This model is set up for natural gas and is field convertible to propane. A conversion kit is included.
Controls include an EZNav multi-line control panel and a built-in HotButton control panel. The unit can also be remote controlled. The NPE-S2 series does not have recirculation.
