Navien
Navien NPE-240A2
$2099
Best Tankless Water Heaters · head-to-head
Navien NPE-240A2 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 Navien NPE-240A2 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 |  Navien NPE-240A2 |  Stiebel Eltron Tempra 36 Plus |
|---|---|---|
| US price | $2099 | $1132 |
| Brand | Navien | Stiebel Eltron |
| Released | — | — |
| Fuel type | natural-gas | electric |
| Max flow rate (gpm) | 11.2 | 8.2 |
| Max btu per hour | 199900 | — |
| Power input (kW) | — | 36 |
| Uniform energy factor | 0.95 | — |
| Condensing type | condensing | electric |
| Min activation flow (gpm) | 0.5 | 0.77 |
| Vent type | pvc | none |
| Max temp (°F) | — | 140 |
| Heat exchanger warranty yrs | 15 | 7 |
| Wi-Fi enabled | No | No |
| Weight (lb) | 77 | 17.6 |
Sources — Navien NPE-240A2: navieninc.com (verified 2026-07-11). Stiebel Eltron Tempra 36 Plus: stiebel-eltron-usa.com (verified 2026-07-11).
What's the difference between the Navien NPE-240A2 and Stiebel Eltron Tempra 36 Plus?
Where the two actually differ on the specs we track (7 of 12). Matching specs are omitted.
- Fuel type: Navien NPE-240A2 natural-gas vs Stiebel Eltron Tempra 36 Plus electric
- Max flow rate (gpm): Navien NPE-240A2 11.2 vs Stiebel Eltron Tempra 36 Plus 8.2
- Condensing type: Navien NPE-240A2 condensing vs Stiebel Eltron Tempra 36 Plus electric
- Min activation flow (gpm): Navien NPE-240A2 0.5 vs Stiebel Eltron Tempra 36 Plus 0.77
- Vent type: Navien NPE-240A2 pvc vs Stiebel Eltron Tempra 36 Plus none
- Heat exchanger warranty yrs: Navien NPE-240A2 15 vs Stiebel Eltron Tempra 36 Plus 7
- Weight (lb): Navien NPE-240A2 77 vs Stiebel Eltron Tempra 36 Plus 17.6