Rinnai
Rinnai RU199iN
—
Best Tankless Water Heaters · head-to-head
Rinnai RU199iN vs Bosch Greentherm T9900i SE 199
A sourced, side-by-side comparison. Bosch Greentherm T9900i SE 199 is cheaper at $3583.27. Every spec and price links to its source.
Bosch
Bosch Greentherm T9900i SE 199
$3583.27
Which is better: the Rinnai RU199iN or Bosch Greentherm T9900i SE 199?
The Rinnai RU199iN wins 1 of the 1 specs we compare head to head; the other wins 0.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Rinnai RU199iN |  Bosch Greentherm T9900i SE 199 |
|---|---|---|
| US price | — | $3583.27 |
| Brand | Rinnai | Bosch |
| Released | — | — |
| Fuel type | natural-gas | natural-gas |
| Max flow rate (gpm) | 11 | 11.2 |
| Max btu per hour | 199000 | 199000 |
| Power input (kW) | — | — |
| Uniform energy factor | 0.95 | — |
| Condensing type | condensing | condensing |
| Min activation flow (gpm) | — | 0.45 |
| Vent type | — | pvc |
| Max temp (°F) | — | 140 |
| Heat exchanger warranty yrs | 15 | 15 |
| Wi-Fi enabled | No | Yes |
| Weight (lb) | 64 | 85 |
Sources — Rinnai RU199iN: rinnai.us (verified 2026-07-11). Bosch Greentherm T9900i SE 199: bosch-homecomfort.com (verified 2026-07-11).
What's the difference between the Rinnai RU199iN and Bosch Greentherm T9900i SE 199?
Where the two actually differ on the specs we track (3 of 12). Matching specs are omitted.
- Max flow rate (gpm): Rinnai RU199iN 11 vs Bosch Greentherm T9900i SE 199 11.2
- Wi-Fi enabled: Rinnai RU199iN false vs Bosch Greentherm T9900i SE 199 true
- Weight (lb): Rinnai RU199iN 64 vs Bosch Greentherm T9900i SE 199 85