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  • Navien NR-240A (CR-240A) Tankless Hot Water Heater with Circulating Pump and Buffer Tank
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Navien NR-240A (CR-240A) Tankless Hot Water Heater with Circulating Pump and Buffer Tank

by Navien
| 10 answered questions

List Price: $2,060.00
Price: $999.99 + $103.55 shipping
You Save: $1,060.01 (51%)
Only 4 left in stock.
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Product Information

Technical Details
Part Number NR-240A-NG
Item Weight1 pounds
Product Dimensions1 x 1 x 1 inches
  
Additional Information
ASINB003AD8HHM
Best Sellers Rank #944,750 in Home Improvement (See top 100)
Shipping Weight94.5 pounds (View shipping rates and policies)
ShippingCurrently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
Date First AvailableFebruary 28, 2010
  
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Product Description

Navien NR-240A-NG Residential Natural Gas Tankless Water Heater 199K BTU With Circulating Pump Mini Buffer Tank

Customer Reviews

It took us 2 days to get it fix by my contractor after he replaced the water flow sensor.
luantdoan
I don't know how accurate this is, but pass along the comment and it certainly explains my problems.
Vaughn from Alberta Canada
When I call the customer service line to get some tech support, I am given no help at all.
Andrew Oldroyd

Most Helpful Customer Reviews

199 of 211 people found the following review helpful By M. Murphy on December 28, 2010
First: the Navien NR-series tankless has only been in service since Oct 2009, so the 2yr+ ownership reviews were done on the CR-series. The CR-series did have issues which were addressed in warranty fixes and massively updated on the NR-series. Second: do your research. I replaced my 17yr old A.O. Smith gas tank with the Navien NR-240A. The NR met my criteria of long warranty, EF, min GPM (zero). It didn't hurt either that I was getting the governments credit either, so I went to energystar.gov to do a lot of research heavy lifting. The "A" model included a small buffer tank (to eliminate the "cold sandwich") and a built in circulation pump. Make sure your plumber (or if you DYI) installs recirculation T's at the longest runs (in my case, master bathroom). Combinded with the built-in circulation pump, this will also eliminate the time it takes to get hot water to your facet (example: from 60sec to 5sec). Do not go with marketing fluff from other manufacturers (such as "market leader", "brand leader", etc...), go with what you need and what your criteria is (EF, GPM, warranty).

4JUN2011 - UPDATE: Instead of commenting on each of the "BAD" reviews - I'm going to generalize based on their issues:
* Again - anyone claiming 2+ yrs ownership, take that to mean they have the "CR" not the "NR".
* Installation/Plumber - the absolute key to these products. If the installer doesn't know what they are doing, you'll not have a good experience. If done correctly, you should not have to wait more than 45s for hot water (even if recirc is off).
* If your installer is decent, you shouldn't be calling Navien direct, you call your installer/plumber to resolve your issue.
* You shouldn't have to "doubled" your piping for recirc ...
Read more ›
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22 of 22 people found the following review helpful By chardonite on December 2, 2010
I really like my Navien it works exactly like promised. Three showers can be used a once with no problem.The main thing with all tank less heaters is gas supply.My gas meter was only rated at 350,000 btu's. Not enough to run the tank less plus other appliances. The gas company upgraded it for free to a 1,000,000 btu unit and I have had no problems at all.I put it in myself in one day and sold my used hot water tank on Craig's list. I would wouldn't be afraid to buy one of these they are a good product.....
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36 of 39 people found the following review helpful By S. KRAMER on September 23, 2010
Not sure of other reviews, this thing has worked well for way over 6 months. It heats quickly and reliably. It generates more than enough water for my rain-shower shower system, and has capacity to spare. I ran it today with 8 faucets open, and its 140 degrees of red-hot water just kept going. Only caution note is make 110% sure you have at least a 1 inch gas supply line AND make sure you have a UPGRADED gas meter (most meters can not handle a tankless along with other appliances - they have a maximum of ~250,000 BTU, not enough for a furnace and tankless at same time!).
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14 of 14 people found the following review helpful By JOE G on March 13, 2011
My thoughts on my NAVIEN 240 A On demand water heater.
Ok, When I was thinking of getting a on Demand water heater I had read pretty much nothing but bad things of the navien. I then heard that the 2 gen Models which are out now I guess were better so I decied to try one for my self.

My house has 4 sinks and two bath tubs (1 is 100 Gal Whirlpool) 2 showers dish washer and washing machine.

I take showers some times that are pushing 45 Min and not once have I ever ran out of hot water, I have ran two baths at once and never have had a problem the water stays hot and the temp doesnt fluctuate much at all if at all. I have some hi out put water fixtures also.

If I put the unit on recurlation mode it keeps the water hot in the line and the hot water is pretty instant when its called for and it can be adjusted to recurulated at certain times. The unit is in basement is pretty quite and not bad looking its tucked up out of the way.

The Unit makes a little noise but I only hear it when in basement.

The Manual is a little confusing since I guess it was in Korean and had to be translated to English.

I leave the water temp set at 125 Deg.

I am in NY so the ground water is cold at this time of year and the reps from navien were worried about this but not one issue. I can turn the water temp up but 125 is plenty hot.

Figured Id tell you guys and I am very happy with the service ( Had set up questions ) and the unit it self and I do reccommended it.

I hated the Propane or Electric Tank type Hot Water Heaters, Always Running out of Hot Water, I had a Boiler with a Indirect Tank in my old house and That was a great set up but This set up is even better.

Its got four stars due to Cost and the Manual. I Also didnt purchase this from Amazon I picked it up from a local store.

I Run a 3/4 Hi Pressure system in stead on a 1 In Low Pressure.
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73 of 88 people found the following review helpful By Richard on February 1, 2011
We had the Navien NR-240 (A) installed in July 2010. Knowing what we know now, we would not do it again. Here's why.

The Good:

So efficient that the exhaust pipe is plastic and vents out the side wall of the garage thus reducing installation headaches and cost.

Saves on Gas however it will take maybe 12 to 15 years of service without further cost to make up the difference in purchase and installation cost.

No tank in the garage taking up room.

The Bad:

Loud, like a small gas engine

Hot water recirculation feature does not work, in fact it takes longer to get hot water to the faucet now then it did with out conventional water heater, thus wasting more water. (Save on gas, waste water)

It is supposed to have a expansion tank built in but it does nothing to reduce the minor pipe noise that has developed in the last couple of years.

The first few minutes in the shower require 6 to 8 adjustments as it spikes then cools repeatedly before it settles down.
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