22 Rinnai products rated

Rinnai tankless water heaters: every model rated (2026)

Every Rinnai tankless water heater we review, sorted by rating. The Rinnai RU199iN Condensing leads with 7.8/10.

Rinnai has 22 complete heaters in our catalogue, on natural gas and propane, for indoor and outdoor mounting. The best-rated is the Rinnai RU199iN Condensing at 7.8/10. 14 of them have a buyer review record; the rest are rated from what their listings state. In our rankings, the Rinnai RU199iN Condensing is #1 in our high-efficiency tankless ranking, #2 in our whole-house tankless ranking, #3 in our best tankless water heaters ranking and #3 in our gas tankless water heaters ranking and the Rinnai RX160iN Condensing Smart Sense is #3 in our high-efficiency tankless ranking. The full lineup follows, best-rated first.

Rating

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22 products

7.8/10

11 GPMRinnai RU199iN CondensingSee current price388 buyer reviews

7.3/10

7.6 GPMRinnai REP199eN Smart-Circ$1,381.59 on Sep 30, 2026, may have changedSpec-based rating

7.1/10

5.3 GPMRinnai RE140eN Non-Condensing$795.69 on Sep 30, 2026, may have changedSpec-based rating

7.1/10

6.1 GPMRinnai RE160eP Non-Condensing$893.34 on Sep 30, 2026, may have changed5 buyer reviews

7.1/10

6.9 GPMRinnai RE180eP Non-Condensing$1,091.16 on Sep 30, 2026, may have changed9 buyer reviews

7.1/10

6.9 GPMRinnai RE180iN Non-Condensing$1,091.16 on Sep 30, 2026, may have changed16 buyer reviews

7.1/10

8.5 GPMRinnai RE180iP Non-Condensing$1,091.16 on Sep 30, 2026, may have changedSpec-based rating

7.1/10

7.6 GPMRinnai RE199eN Non-Condensing$1,280.79 on Sep 30, 2026, may have changedSpec-based rating

7.1/10

7.6 GPMRinnai RE199eP Non-Condensing$1,280.79 on Sep 30, 2026, may have changed12 buyer reviews

7.0/10

5.3 GPMRinnai RE140eP Non-CondensingSee current price13 buyer reviews

7.0/10

5.3 GPMRinnai RE140iP Non-Condensing$795.69 on Sep 30, 2026, may have changedSpec-based rating

7.0/10

6.9 GPMRinnai RE180eN Non-Condensing$1,091.16 on Sep 30, 2026, may have changedSpec-based rating

7.0/10

7.6 GPMRinnai RE199iP Non-Condensing$1,280.79 on Sep 30, 2026, may have changedSpec-based rating

7.0/10

6.5 GPMRinnai RUCS65IP Propane$849 on Sep 30, 2026, may have changedSpec-based rating

6.8/10

9 GPMRinnai RX160iN Condensing Smart Sense$1,442.70 on Sep 30, 2026, may have changed70 buyer reviews

6.6/10

7.5 GPMRinnai RUCS75iN Natural Gas$892.24 on Sep 30, 2026, may have changed91 buyer reviews

6.5/10

9.8 GPM · 199,000 BTU/hRinnai RE199iN Non-Condensing$1,280.79 on Sep 30, 2026, may have changed41 buyer reviews

6.5/10

7.1 GPMRinnai RX130iN Condensing Smart Sense$1,264.20 on Sep 30, 2026, may have changed46 buyer reviews

6.0/10

6.5 GPMRinnai RUCS65IN Natural Gas$849 on Sep 30, 2026, may have changed62 buyer reviews

5.4/10

9 GPMRinnai RXP160iN Condensing Smart Sense$1,685.60 on Sep 30, 2026, may have changed34 buyer reviews

4.7/10

11.1 GPM · 199,000 BTU/hRinnai SENSEI CX199iN Commercial$1,752.80 on Sep 30, 2026, may have changed21 buyer reviews

3.9/10

5.3 GPMRinnai RE140iN Non-Condensing$795.69 on Sep 30, 2026, may have changed26 buyer reviews

Product images: Amazon listings

Common questions

Is Rinnai a good tankless water heater brand?

We rate models, not brands, and a brand line can hold strong and weak listings. Here, Rinnai's ratings run 3.9/10 to 7.8/10 across 22 heaters, and two of its models make our top 5 lists.

Which Rinnai tankless water heater is rated highest?

The Rinnai RU199iN Condensing, at 7.8/10, from 388 buyer reviews averaging 4.4/5 and its listed specs.

Does Rinnai make an outdoor tankless water heater?

Yes: Rinnai REP199eN Smart-Circ, Rinnai RE140eN Non-Condensing, Rinnai RE160eP Non-Condensing, Rinnai RE180eP Non-Condensing, Rinnai RE199eN Non-Condensing and three more state outdoor mounting in their listings.

Where do the Rinnai ratings come from?

From each exact listing: what buyers rate it, how many reviews it has and how completely the seller documents the specs, weighed with the formula on our methodology page. We have not installed these heaters ourselves.