Review Navien NPE-240A-NG NPE Series Natural Gas 19,900 to 199,900 BTU Tankless Water Heater: White

Navien NPE-240A-NG NPE Series Natural Gas 19,900 to 199,900 BTU Tankless Water Heater: White

Navien NPE-240A Tankless Water Heater, Utilizes Exisiting 1/2 gas line, Ultra Condensing Efficiency, Dual Stainless Steel Heat Exchangers, 2" PVC Venting, Field Gas Convertibility (NG or LP), Front Panel Command Center, Comfort Flow Technology, Intelligent Preheating Technology, 82lbs, 17.3 (W) x 27.4 (H) x 13.2 (D). All water heaters of any type MUST be installed by a trained and licensed technician. Failure to do so may result in damage, injury or death. Warranties may be void if installed by non-licensed personnel. We will not be held liable for any damages, injury or death caused by proper or improper installation of hot water heaters. We will not be held liable for any local state, county or city code violations caused by the improper selection of water heaters.**

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Navien NPE-240A-NG NPE Series Natural Gas 19,900 to 199,900 BTU Tankless Water Heater: White Features

• Utilizes existing 1/2" gas line up to 24'
• 2" PVC Venting up to 60'
• Field Gas Convertible (NG or LP)
• Buffer Tank & Recirculation Pump included
• Ultra Condensing Efficiency

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Navien NPE-240A-NG NPE Series Natural Gas 19,900 to 199,900 BTU Tankless Water Heater: White

Customers say's :
Very effective and efficient heater; buffer tank could use some work
I have an NPE-240A for almost a month now. It was installed by a licensed plumber. The unit was connected to pre-existing 3/4" natural gas. The PVC for exhausting gasses was routed through the old water heater vent. The condensate line was connected using insulated PEX and terminated within a sloped PVC pipe that routes the condensate to the exterior of the house where it drains / evaporates on our rear porch. Note that the condensate is slightly acidic as isn't just water; it is carbonic acid with a PH of ~2-4. This is due to the gasses, including CO, being cooled in the secondary heat exchanger enough for water to condensate out while incorporating the CO. Thus be mindful of where the acidic condensate drains.

The NPE-240A is unique in that it incorporates a 0.5 gallon buffer tank. The buffer tank is meant to help prevent cold water sandwiches, and if recirculation is always on, allow < 0.5 GPM flow rates for hot water. However, if recirculation is not enabled,...

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I am impressed!
I replaced a rusted out 50 gallon gas hot water heater with the Navien NPE 240A tankless hot water heater. I had it installed by a licensed plumbing contractor - I can't see the average homeowner doing this themselves. (in fact, I was a licensed plumber for many years but still was more comfortable having someone else do it as he had the proper tools and I'm not as young as I used to be).

Installation was not difficult - for my plumber - in fact the 1/2" gas connection and 2" PVC vent piping made for simple work. Many tankless need a 3/4" gas line and 3" pipe. That extra inch of vent pipe is a HUGE deal. There is a fair amount of piping required on the water end - get the installation valve kit. It will help in servicing the unit later on.

The Navien also has a recirculating pump built in, which can work internally as well as run an external recirculating line, should you have one in the house. Coupled with a small tank in the unit, there is less fluctuation...

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Caution for warranty

I love my Navien water heater! Delivers endless hot water, as promised.. BE AWARE that if you purchase your Navien water heater online, you are not buying ANY factory warrranty, regardless of what the papers inside the box say or what the website you are buying from says. The fine print states that the unit MUST be purchased from a plumber through wholesale distribution to receive the excellent warranty offered by Navien. Keep this in mind when purchacing!!!

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