Why choose a Navien Condensing 98% Tankless Water Heater? In a word: Efficiency. You see, Navien utilizes “condensing technology,” giving our Water Heaters a 98% efficiency rating. Knocking the competition out of the water, these extremely efficient and eco-friendly units will provide extra savings for you and your family.
Because Navien’s stainless-steel condensing heat exchanger is able to recover the condensation that would otherwise be lost, the small amount of exhaust that is released from Navien Water Heaters is cool to the touch (about 85˚F-130˚F), allowing the use of PVC venting materials. The use of PVC offers significant cost savings and simplifies installation.