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- NEWEST CONDENSING UNIT, NRC111 series - PVC venting!
Noritz's newest model, the NRC111 series. The highest performing condensing tankless water heater on the market today. This unit is basically the same as the N-0841MC series, but designed for residential applications. Features include designer white casing and built-in PVC adapter(s)!
Compare NRC111 series specifications to our competition
Venting: 3" or 4" schedule 40 PVC or CPVC
Maximum btuh: 199,900
Minimum btuh: 11,000
Maximum flow rate: 11.1GPM (8.4 GPM @ 45 degree rise)
Minimum flow rate: 0.5 GPM
Maximum temp: 180 degrees
Minimum temp: 100 degrees
Exclusives!
Dual flame burner: NEW DUAL FLAME BURNER vs OLD SINGLE FLAME BURNER
Super Heat Exchanger - commercial grade
Turbo-flow - boosts flow rate
Multi-system up to 24 units
Built-in neutralizer
Thermal efficiency: 93% (NG) 94% (LP)
Energy factor: .92 (NG) .94 (LP)
Warranty: 12-yr heat exchanger/5-yr parts/1-yr labor
- ENERGY STAR for tankless - Coming 2009!
Noritz will be the only tankless gas water heater manufacturer that will have Energy Star approval on ALL of its residential models.
April 1, 2008
For Immediate Release
U.S. Department of Energy Implements Criteria for ENERGY STAR® Water Heaters
WASHINGTON, DC - The U.S. Department of Energy (DOE) today announced new ENERGY STAR®
criteria for water heaters, the first in the history of the program. According to DOE projections, by the end of
the fifth year in effect, the new water heater criteria are expected to save Americans approximately $780 million
in utility costs, avoid 4.2 million tons of carbon dioxide emissions, and achieve cumulative energy savings of
more than 3.9 billion kilowatt-hours and 270 million therms of natural gas. Water heating currently represents
up to 17 percent of national residential energy consumption, making it the third largest energy user in homes,
behind heating and cooling, and kitchen appliances.
Taking effect January 1, 2009, whole-home gas tankless water heaters which carry the ENERGY STAR® label
must have a minimum EF of 0.82, minimum gallons-per-minute flow of 2.5 at a 77 degrees Fahrenheit rise, or
be 41.4 percent more efficient than the current Federal standard. A whole-home gas tankless water heater with
a 0.82 EF is expected to achieve a 30 percent reduction in energy use and save a consumer approximately $108
in annual energy costs compared to a typical gas storage water heater.
- Condensing Heaters - The highest performing condensing tankless gas water heater.
The Noritz NCC199 series is the highest performing condensing tankless water heater on the market today.
Compare NCC199 series specifications to our competition
Venting: 3" or 4" schedule 40 PVC/CPVC or 4" stainless steel
Maximum btuh: 199,900
Minimum btuh: 11,000
Maximum flow rate: 11.1GPM (8.4 GPM @ 45 degree rise)
Minimum flow rate: 0.5 GPM
Maximum temp: 180 degrees
Minimum temp: 100 degrees
Exclusives!
Dual flame burner: NEW DUAL FLAME BURNER vs OLD SINGLE FLAME BURNER
Super Heat Exchanger - commercial grade
Turbo-flow - boosts flow rate
Stainless steel casing
Multi-system up to 24 units
Built-in neutralizer
Thermal efficiency: 93% (NG) 94% (LP)
Energy factor: .92 (NG) .94 (LP)
Warranty: NON-PRORATED commercial warranty, 5-yr heat exchanger/5-yr parts
- Concentric Vent-type Heaters - Who has the highest performing unit?
Of course the answer is Noritz! The Noritz NR98-DVC is the highest performing concentric tankless water heater on the market today.
Compare NR98-DVC specifications to our competition
Maximum btuh: 199,900
Minimum btuh: 11,000
Maximum flow rate: 9.8 GPM @ 35-degree rise (7.5 GPM @ 45 degree rise)
Minimum flow rate: 0.5 GPM
Maximum temp: 180 degrees
Minimum temp: 100 degrees
Exclusives!
Dual flame burner: NEW DUAL FLAME BURNER vs OLD SINGLE FLAME BURNER
Super Heat Exchanger - commercial grade
Turbo-flow - boosts flow rate
Quick-connect - doubles output
Thermal efficiency: 84%
Energy factor: .82 (NG) .84 (LP)
Warranty: 12-yr heat exchanger/5-yr parts/1-yr labor
- Using A Tankless To Heat Homes - Noritz NH series boilers
Due to the market demand of heating homes with hot water, Noritz has designed two models specifically for heating - the NH series. These units have 9 temperature settings and can also be used to control two separate output temperatures - for heating the home and for indirect domestic hot water. Compared to the 300+ lbs. boilers, the NH series only weighs in at 65 lbs! No other tankless manufacture offers models designed specifically for heating the home.
FULL SPECS: NH150-ASME NH199-ASME

Photo courtesy of Mr. Tom Tarantin of Tarantin Tank & Equipment Co. - Two NH series (on left) and two NR111 units (on right)
- HRS35 Copper Alloy - Is this new?
HRS35 copper alloy is 99.5% pure copper with .5% mixture of other elements. Standard copper is made of 99.9% pure copper. Since HRS35 is harder than comparable standard copper, our largest commercial unit, N-1321M-ASME, has been using this material in the outer casing of the heat exchanger for many years (HRS35 is not approved by ASME for use on the copper piping). The rest of our heaters that have the commercial grade heat exchangers use the standard copper, but is 25% thicker on the copper piping which has proved to be extremely durable for its use.
To cut costs on materials, some competitors have used the HRS35 to create thinner copper components, which will affect the durability in the long run. Also, unlike ours, competitor's ASME models use 0% of HRS35 copper alloy. Don't let the fancy HRS35 name fool you. It's definitely not new, and our durability tests prove our technology choice is far superior than our competition.
- Noritz VS. Rinnai - Posted on NRGY.org
"We studied both manufacturers and talked to a number of plumbers and homeowners as well as the distributors. Although Rinnai is better known in NH, we've concluded that Noritz, also a Japanese company, has the better product. Not only are the materials better, technical performance is better as well. The minimum flow rate (the lowest flow rate at which the unit will turn on) is 0.5 vs. 0.6 for the Rinnai. This is important if you want a trickle of hot water instead of an open tap. It also saves hot water. Noritz also has high efficiency condensing units (the Model 841 is 93% efficient vs. Rinnai's 84%). Most plumbers we talked to had only worked with Rinnai. Those who had worked with both tended to prefer Noritz. Also, Noritz stainless steel vent piping is standard and widely available while Rinnai's is a proprietary, more expensive solution."
READ FULL ARTICLE: http://nrgy.org/ondemand.htm
- Temperature Stability - Cold water sandwich
Though we cannot openly disclose the competitor's names, you can clearly see that Noritz outperforms in temperature stabilization versus all tankless competitors, which is the root cause of cold water sandwiches.

- Flow Chart - Noritz tankless water heater flow performance chart.
The chart below shows the flow rates of all of our models based on a 105-degree output setting.
