Bosch
Bosch Greentherm T9900i SE 199
$3583.27
Best Tankless Water Heaters · head-to-head
Bosch Greentherm T9900i SE 199 vs Stiebel Eltron Tempra 36 Plus
A sourced, side-by-side comparison. Stiebel Eltron Tempra 36 Plus is cheaper at $1132. Every spec and price links to its source.
Stiebel Eltron
Stiebel Eltron Tempra 36 Plus
$1132Cheaper
Which is better: the Bosch Greentherm T9900i SE 199 or Stiebel Eltron Tempra 36 Plus?
The Stiebel Eltron Tempra 36 Plus wins 1 of the 1 specs we compare head to head; the other wins 0. The Stiebel Eltron Tempra 36 Plus is the cheaper at $1132. The Stiebel Eltron Tempra 36 Plus both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Bosch Greentherm T9900i SE 199 | Stiebel Eltron Tempra 36 Plus |
|---|---|---|
| US price | $3583.27 | $1132 |
| Brand | Bosch | Stiebel Eltron |
| Released | — | — |
| Fuel type | natural-gas | electric |
| Max flow rate gpm | 11.2 | 8.2 |
| Max btu per hour | 199000 | — |
| Power input (kW) | — | 36 |
| Uniform energy factor | — | — |
| Condensing type | condensing | electric |
| Min activation flow gpm | 0.45 | 0.77 |
| Vent type | pvc | none |
| Max temp f | 140 | 140 |
| Heat exchanger warranty yrs | 15 | 7 |
| Wi-Fi enabled | Yes | No |
| Weight (lb) | 85 | 17.6 |
Sources — Bosch Greentherm T9900i SE 199: bosch-homecomfort.com (verified 2026-07-11). Stiebel Eltron Tempra 36 Plus: stiebel-eltron-usa.com (verified 2026-07-11).
What's the difference between the Bosch Greentherm T9900i SE 199 and Stiebel Eltron Tempra 36 Plus?
Where the two actually differ on the specs we track (8 of 12). Matching specs are omitted.
- Fuel type: Bosch Greentherm T9900i SE 199 natural-gas vs Stiebel Eltron Tempra 36 Plus electric
- Max flow rate gpm: Bosch Greentherm T9900i SE 199 11.2 vs Stiebel Eltron Tempra 36 Plus 8.2
- Condensing type: Bosch Greentherm T9900i SE 199 condensing vs Stiebel Eltron Tempra 36 Plus electric
- Min activation flow gpm: Bosch Greentherm T9900i SE 199 0.45 vs Stiebel Eltron Tempra 36 Plus 0.77
- Vent type: Bosch Greentherm T9900i SE 199 pvc vs Stiebel Eltron Tempra 36 Plus none
- Heat exchanger warranty yrs: Bosch Greentherm T9900i SE 199 15 vs Stiebel Eltron Tempra 36 Plus 7
- Wi-Fi enabled: Bosch Greentherm T9900i SE 199 true vs Stiebel Eltron Tempra 36 Plus false
- Weight (lb): Bosch Greentherm T9900i SE 199 85 vs Stiebel Eltron Tempra 36 Plus 17.6