Comparing Tankless Water Heaters
Comparing tankless water heaters for the purpose of choosing the right fixture for the right job is important. There are many brand names out there and a lot of promises of incredible savings on energy bills and utilities. There is truth to some of it and there are also issues we will simply classify as creative advertising. For the purposes of this and other articles I will limit the tankless water heaters I compare to those that are commonly supplied and installed by professionals and still available to the general public. The manufacturers on the pedestal today are: Eternal, Noritz, Takagi, Rinnai, and Navien.
| Brand | Max BTU | Min. GPM | Efficiency | 35ºF Temp. Rise | Approx.Price | Vent Type | |
| (In Gallons) | |||||||
| Eternal | |||||||
| GU195 | 199,000.00 | 0.5 | 98% | 11.1 | $2,800.00 | PVC | |
| GU145 | 145,000.00 | 0.5 | 98% | 9.1 | $2,600.00 | PVC | |
| Navien | |||||||
| NR/ NP-240 | 199,000.00 | Unknown | 98% | 11 | PVC | ||
| NR-210 | 180,000.00 | Unknown | 98% | 10 | PVC | ||
| NR-180 | 150,000.00 | Unknown | 98% | 8.3 | PVC | ||
| Bosch | |||||||
| 2700ES | 199,000.00 | 0.65 | 82% | 8.3 | $1,100.00 | Cat.III Stainless | |
| 2400ES | 175,000.00 | 0.65 | 82% | 7.2 | $1,050.00 | Cat.III Stainless | |
| 1600H | 117,000.00 | 0.6 | 80% | 5.5 | $649.00 | Cat.III Stainless | |
| Noritz | |||||||
| NR-111 | 250,000.00 | 0.5 | N/A | 11 | $2,799.00 | Cat.III Stainless | |
| NR-98 | 199,900.00 | 0.5 | 91% | 8.5 | $1,859.00 | Cat.III Stainless | |
| NR-83 | 180,000.00 | 0.5 | 83% | 7.5 | $1,569.00 | Cat.III Stainless | |
| NR-71 | 180,000.00 | 0.5 | 83% | 7 | $1,259.00 | Cat.III Stainless | |
| NR-66 | 180,000.00 | 0.5 | 82% | 7 | $1,029.00 | Cat.III Stainless | |
| Rinnai | |||||||
| RC98HPi | 199,000.00 | 0.4 | 96% | 9.8 | $2,499.00 | Rinnai Only | |
| R94LSi | 190,000.00 | 0.6 | 82% | 9.4 | $1,999.00 | Rinnai Only | |
| R75LSi | 180,000.00 | 0.6 | 82% | 7.5 | $1,575.00 | Rinnai Only | |
| R50LSi | 150,000.00 | 0.6 | 82% | 5 | $1,279.00 | Rinnai Only | |
| Takagi | |||||||
| T-M32 | 240,000.00 | 0.5 | N/A | 9 | $2,499.00 | Cat.III Stainless | |
| T-K3 | 199,000.00 | 0.5 | 84% | 7 | $1,800.00 | Cat.III Stainless | |
| T-K Jr. | 199,000.00 | 0.5 | 81% | 7 | $1,499.00 | Cat.III Stainless | |
| * All specifications are as provided by the affiliated manufacturer and provided as public knowledge on the respective web site. | |||||||
| I make no claims to the accuracy of the provided claims. These statistics are generated by the manufacturers and available on the respective websites and through outside sales companies. I do not represent any of the mentioned brands or receive any sales commissions from any manufacturer or outside sales company. | |||||||
| This chart is provided to allow you an easy comparison of several different brands and models available to you the consumer.* | |||||||
