Rinnai RE199i
#10 in GasFull review
A dependable whole home heater for buyers who want Rinnai power at a lower price than a condensing model and have room for metal venting.
Amazon $1,280.79 Amazon $1,412.82$1,280.79
3.8/5
A very efficient heater for a two bathroom home that does not need the full 199,000 BTU/h of the RX199i.
- 160,000 BTU/hHeating power
- 9 GPMMax flow
- 0.97UEF
- 15 yearsHeat exchanger warranty
Check price at Amazon$1,298.43
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Runs on natural gas or propane with no conversion kit
- A 0.97 UEF keeps gas use low for a two bathroom home
- PVC venting and an optional outdoor vent cap make installation flexible
- Same 15 year heat exchanger warranty as the bigger RX199i
Cons
- Less flow than the RX199i for three showers at once in cold climates
- Wi-Fi control is an extra purchase
- Needs a condensate drain
The Rinnai Sensei RX family
Every Rinnai Sensei RX model we rank, smallest first. Ratings compare each against its own fuel.
| Model | Heating power | Rating | Price |
|---|---|---|---|
| Rinnai Sensei RX160i (this one) | 160,000 BTU/h | 3.8/5 | $1,298.43 |
| Rinnai Sensei RX199i | 199,000 BTU/h | 4.3/5 | $1,532.79 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its fuel. How we rank explains each one.
Specifications
| Model number | REU-NB2530FF-US |
|---|---|
| Heating | |
| Fuel | Gas |
| Gas type | Natural gas or propane |
| Gas input | 15,000 to 160,000 BTU/h |
| Max flow | 9 GPM |
| UEF | 0.97 |
| Condensing | Yes |
| ENERGY STAR | Yes |
| Installation | |
| Venting | Both |
| Vent type | 2 in or 3 in PVC/CPVC/PP, or concentric |
| Weight | 54 lb |
| Features | |
| Built-in recirculation | No |
| Wi-Fi | No |
| Heat exchanger warranty | 15 years |
| Parts warranty | 5 years |
Alternatives in this fuel
Camplux WA686M
#11 in GasFull review
A bargain outdoor whole home heater for mild climates, best for buyers comfortable with a short warranty.
Amazon $559.99 Amazon $599.99$559.99
A.O. Smith Adapt ATHR-199M
#13 in GasFull review
A premium whole home heater for buyers who want built in recirculation and top efficiency and can pay for it.
Amazon $2,346.08$2,346.08
Compare
Compare the Rinnai Sensei RX160i with any other tankless water heater →
More from Rinnai: every Rinnai product ranked.