Average Reviews:
(More customer reviews)After two years, my Navien "A" model quit completely due to a design flaw. The company replaced it with a new model, but I'm out of pocket on additional labor costs to the tune of a thousand bucks. Also, I had spent extra for the recirculation model, only to find out it doesn't work in big houses. Navien produces an inferior product and its service back-up is bad. Only one company in our region installs and services Navien. They told me they are seriously considering dropping Navien due to its many problems and consequent repeat service calls.
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Product Description:
With this Navien, you get a 98% efficiency heater, recirculating pump, buffer tank and leak detector. You can vent with PVC pipe due to the low exhaust temperatures, this saves you the cost of stainless steel venting pipe. Comes with remote control. 11 gallons per minute water flow at a 45?F rise. For commercial applications link up to 99 units together.
Navien: Energy-Efficient Water HeaterNavien's line of tankless water heaters relies on super-efficient condensing gas burners to create an endless supply of domestic hot water. Because condensing burners extract 98 percent of the heat from the gas flame, operating costs are less than one-half of an average tankless water heater and one-third of traditional tank heaters. And the exhaust is so cool, heaters can be vented with plastic pipe. The Model A shown has a miniature buffer tank to keep the hot water coming even when the flow is reduced to a trickle. The largest models have maximum flow rates of 11 gallons per minute in warm climates, 6 gpm in cold climates.
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