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Noritz Residential Tankless Water Heaters
| Noritz Tankless Water Heater Comparison Chart |
| Model |
Comparison Details |
Max BTU
(per unit) |
Min BTU
(per unit) |
Flow Rate
(GPM/unit) |
Thermal
Efficiency |
Max Units
In Series |
Net
Weight |
Dimensions
(H x W x D)" |
| NR111 Series |
250,000 |
11,000 |
0.50 - 11.1 |
84% |
2 |
62 lbs |
24.2 x 18.3 x 9.4 |
| NRC1111 Series |
199,900 |
11,000 |
0.50 - 11.1 |
93% |
2 |
74 lbs |
24.2 x 18.3 x 9.4 |
| NR981 Series |
199,900 |
12,000 |
0.50 - 9.8 |
84% |
2 |
47 lbs |
23.6 x 13.8 x 9.4 |
| NR83 Series |
180,000 |
18,000 |
0.50 - 8.3 |
84% |
2 |
49 lbs |
23.6 x 13.8 x 9.4 |
| NR71 Series |
180,000 |
25,000 |
0.50 - 7.1 |
83% |
2 |
41 lbs |
23.6 x 13.8 x 6.7 |
| NR66 Series |
140,000 |
20,000 |
0.50 - 6.6 |
83% |
2 |
36 lbs |
20.5 x 13.8 x 6.7 |
| NC380 Series |
380,000 |
22,500 |
0.70 - 13.2 |
80-84% |
24 |
105 lbs |
29.7 x 19.1 x 11.8 |
| NC250 Series |
250,000 |
11,000 |
0.50 - 9.3 |
84% |
24 |
62 lbs |
24.2 x 18.4 x 9.4 |
| NCC199 Series |
199,900 |
11,000 |
0.50 - 11.1 |
93% |
24 |
73 lbs |
24.4 x 18.4 x 9.4 |
| NC1991 Series |
199,900 |
12,000 |
0.50 - 9.8 |
84% |
6 |
47 lbs |
23.6 x 13.8 x 9.4 |
| Noritz Tankless Water Heater Flow Rate Guide (Temp Rise vs GPM) |
| Model |
Temperature Rise (F°) |
| 30 |
35 |
40 |
45 |
50 |
55 |
60 |
65 |
70 |
75 |
80 |
85 |
90 |
95 |
100 |
| NR111 |
G
P
M |
11.1 |
11.1 |
10.5 |
9.3 |
8.4 |
7.6 |
7.0 |
6.5 |
6.0 |
5.6 |
5.3 |
4.9 |
4.7 |
4.4 |
4.2 |
| NRC1111 |
11.1 |
10.6 |
9.3 |
8.4 |
7.4 |
6.8 |
6.2 |
5.8 |
5.3 |
5.0 |
4.6 |
4.4 |
4.1 |
3.9 |
3.7 |
| NR981 |
9.8 |
9.2 |
8.4 |
7.5 |
6.7 |
6.1 |
5.6 |
5.2 |
4.8 |
4.5 |
4.2 |
4.0 |
3.7 |
3.5 |
3.4 |
| NR83 |
8.3 |
8.3 |
7.6 |
6.7 |
6.1 |
5.5 |
5.0 |
4.7 |
4.3 |
4.0 |
3.8 |
3.6 |
3.4 |
3.2 |
3.0 |
| NR71 |
7.1 |
7.1 |
7.1 |
6.3 |
5.8 |
5.2 |
4.8 |
4.4 |
4.1 |
3.8 |
3.6 |
3.4 |
3.2 |
3.0 |
2.9 |
| NR66 |
6.6 |
6.6 |
5.7 |
5.3 |
4.6 |
4.2 |
3.8 |
3.5 |
3.3 |
3.1 |
2.9 |
2.7 |
2.6 |
2.4 |
2.3 |
| NC380 |
13.2 |
13.2 |
13.2 |
13.2 |
12.5 |
11.3 |
10.4 |
9.6 |
8.9 |
8.3 |
7.8 |
7.9 |
6.9 |
6.6 |
6.4 |
| NC250 |
11.1 |
11.1 |
10.5 |
9.3 |
8.4 |
7.6 |
7.0 |
6.5 |
6.0 |
5.6 |
5.3 |
4.9 |
4.7 |
4.4 |
4.2 |
| NCC199 |
11.1 |
10.6 |
9.3 |
8.4 |
7.4 |
6.8 |
6.2 |
5.8 |
5.3 |
5.0 |
4.6 |
4.4 |
4.1 |
3.9 |
3.7 |
| NC1991 |
9.8 |
9.2 |
8.4 |
7.5 |
6.7 |
6.1 |
5.6 |
5.2 |
4.8 |
4.5 |
4.2 |
4.0 |
3.7 |
3.5 |
3.4 |
