Different engineering traditions.
Product comparison
| Takagi T-H3-DV-N | Bosch Greentherm 9000 | |
|---|---|---|
| BTU / GPM | 199k / 10.0 | 199k / 9.9 |
| Heat exchanger warranty | 15 years | 15 years |
| App | None | Home Comfort (improving) |
| Built-in recirc | No | No |
| Typical price | $1,449-1,749 | $1,599-1,899 |
Both have 15-year warranty. Takagi slightly cheaper. Bosch has Home Comfort app (improving but less polished than Rinnai). Bosch has German engineering reputation; Takagi has AO Smith distribution.
POU mini-tank
Bosch wins decisively. Takagi doesn't make POU mini-tanks.
Combi boiler
Bosch wins (Greenstar). Takagi doesn't make combi boilers.
When Takagi wins
- Price-sensitive — slightly cheaper
- AO Smith distribution available locally
- Japanese engineering preferred
When Bosch wins
- POU mini-tanks (only choice)
- Combi boiler (only choice)
- You want German engineering heritage
- You want Home Comfort app integration
Bottom line
Comparable on standard gas tankless. Takagi slightly cheaper. Bosch wins on POU and combi product lines that Takagi doesn't offer.