Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.
Rinnai V75iN Gas Tankless comes out ahead by a narrow margin (4.5 vs 4.7). The gap is mostly about northern homes with natural gas service — read the strengths below before deciding.
The RTEX-13 is the point-of-use pick — Rheem's compact tankless for a single sink or shower. Best for additions and outbuildings.
The V75iN is the gas tankless pick — Rinnai's whole-home unit for households with natural gas service.
Point-of-use only. Compact. Cheapest pick.
Only gas pick. Highest flow at cold inlet. Wi-Fi.
| Spec | Rheem RTEX-13 Point-of-Use | Rinnai V75iN Gas Tankless |
|---|---|---|
| Type | Point-of-use electric | Natural gas |
| Power | 13 kW | — |
| Use | Single fixture | — |
| Form | Compact | — |
| Max GPM | — | 7.5 |
| Wi-Fi | — | Control-R |
| Install | — | Indoor or outdoor |