Product images: Amazon listings
Written from the listing's specs, not from our own use · How we rate
We like the Rinnai RE199iP Non-Condensing for the mix: up to 7.6 GPM and a 15-year heat exchanger warranty. A good match for one shower plus the kitchen in a typical family morning, rated 7.0/10 on its documented specs.
These are sold as variants of one listing family. Each variant has its own page.
| Brand | Rinnai |
|---|---|
| Category | Gas tankless water heaters |
| Fuel | Propane |
| Stated mounting location | Indoor |
| Stated maximum flow | 7.6 GPM |
| Wi-Fi | With an optional module |
| Stated warranty | 15 years on the heat exchanger |
| ASIN | B0B57PLQZZ |
Full listing title: Rinnai RE199iP Non-Condensing Propane Tankless Water Heater
| Fuel | PropaneFull listing title |
|---|---|
| Stated mounting location | RE199iPFull listing title (Rinnai model suffix: i = indoor, e = exterior) |
| Stated maximum flow | up to 7.6 GPMListing text |
Rated from the listing's specs, no buyer reviews yet
What it's made for: one shower plus the kitchen in a typical family morning.
Two gas tankless heaters on propane too, with about the same flow, closest to it on our rating, each with a dated price.
That's the maximum flow the listing states, and headline flows are usually quoted at a mild temperature rise. A cold January asks for a 63 °F rise (42 °F in, 105 °F out), and at that rise every tankless gives less than its headline; the maker's chart says how much. Our calculator counts a shower at 2 GPM, so on paper that's two showers and a kitchen tap, less when the water comes in cold.
What it has going for it
15-year warranty. 15 years on the heat exchanger, per the listing. Read what it needs from you: many makers ask for a licensed install and regular flushing to keep it valid.
One at a time, plus the kitchen tap: 7.6 GPM covers that on paper.
Two at once: it depends on your groundwater. With 42 °F water in January, expect the second shower to cool off; the flow chart at a 63 °F rise tells you by how much.
What the Rinnai RE199iP Non-Condensing listing names:
Warranty & support: 15-year warranty on the heat exchanger, as stated in the listing.
That is the maker's promise, not ours. Keep the invoice, register the Rinnai RE199iP Non-Condensing if the maker asks, and read the install conditions: many tankless warranties need a licensed install and regular flushing.
The installation manual has the last word on venting, gas line and clearances; your installer reads it before you order.
At the price on Sep 30, 2026, each GPM of stated maximum flow works out at about $168.53 (price ÷ stated GPM, our arithmetic). That puts it in the pricier third of the 45 indoor gas tankless heaters we have a price and a stated flow for.
The online price is the heater alone. Venting, a bigger gas line where needed and the installer's day are a separate bill, often as big as this one.
The button opens the exact listing (ASIN B0B57PLQZZ), where today's price, stock and seller apply. Sizes and variants of the same family often sit at different prices.
Two showers and the dishwasher at once? The MIZUDO 199,000 BTU Natural Gas Indoor (9.2/10) states up to 10.3 GPM.
On natural gas, not propane? The Ranein 190,000 BTU Natural Gas Indoor (7.9/10) runs on natural gas.
Want to spend less? The Marey 170,000 BTU Propane Indoor (7.6/10) was listed at $772.46 on Sep 30, 2026.
Our take
We like the Rinnai RE199iP Non-Condensing for up to 7.6 GPM and a 15-year heat exchanger warranty. No buyer reviews yet, so the Rinnai RE199iP Non-Condensing has to win you over on paper. The catch with the Rinnai RE199iP Non-Condensing: no stated temperature hold, while most picks here claim ±1 °F. We'd pick it if you run one shower and the kitchen tap at once, rarely more; otherwise, put it next to the Rheem RTG 7.0 GPM Natural Gas Indoor first.
Old tank out, unit on the wall, vent through the wall or the roof. a licensed pro handles it, and often a permit.
Hot water arrives after the cold already in the pipes, then stays. A trickle from a bathroom tap may not light the burner; open it a bit more.
January water comes in colder, so the same unit gives fewer GPM. Stagger the showers if you sized it tight.
Flush the heat exchanger with a pump and a descaler (the service valves make it an hour's job), and clean the inlet filter. Our flushing and descaling guide has the checklist.
Before the Rinnai RE199iP Non-Condensing ships, check your winter flow: 7.6 GPM is a best case, so run your January numbers in our calculator first.
Count the fixtures that run together on a busy morning (our calculator uses 2 GPM a shower, 1.5 for the kitchen), then compare with the maker's chart. Our sizing guide shows how.
A licensed plumber or gas fitter confirms the vent route, the combustion air and a gas line that can deliver its full input. Get that quote before you order; our installation guide lists what they will ask.
15 years are stated on the heat exchanger. Read what it requires: a licensed install, the gas type and regular flushing are the usual conditions.
Hard water scales the heat exchanger. Service valves on the water lines turn the yearly flush into an hour with a bucket and a pump; our flushing and descaling guide shows the routine.
How the Rinnai RE199iP Non-Condensing stacks up against the closest alternative, the Rheem RTG 7.0 GPM Natural Gas Indoor.
| Criterion | Rinnai RE199iP Non-Condensing | Rheem RTG 7.0 GPM Natural Gas Indoor |
|---|---|---|
| Our rating | 7.0/10 | 7.0/10 |
| Max flow | 7.6 GPM | 7 GPM |
| Gas input | Not stated | 160,000 BTU/h |
| Temperature hold | Not stated | ±1 °F stated |
| Warranty | 15 years (heat exchanger) | Not stated |
| Buyer reviews | None captured | 65 · 4.5/5 |
Both score 7.0/10. The Rheem RTG 7.0 GPM Natural Gas Indoor adds a bigger burner (160,000 BTU/h) and a stated ±1 °F hold, while the Rinnai RE199iP Non-Condensing brings more flow (7.6 GPM) and a longer stated warranty (15 years).
We rate it 7.0/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
The listing states a maximum flow of 7.6 GPM. The headline flow is a mild-weather number: with cold winter water coming in, the same unit gives you less. Read the maker's flow chart at your winter rise, or let our flow-rate calculator do the sums.
Yes, the listing says indoor mounting. That means a vent route to the outside, combustion air and a gas line sized for the unit, all as the maker and your local code require. A licensed plumber or gas fitter sorts that out.
Its listing states up to 7.6 GPM and a 15-year heat exchanger warranty. These are the seller's figures, not our measurements: how steady the temperature is in your shower and how it copes with your winter water can't be read from a listing.
Your winter flow: count the fixtures that run together on a busy morning (our calculator uses 2 GPM a shower, 1.5 for the kitchen), then compare with the maker's chart. Our sizing guide shows how. Vent and gas line: a licensed plumber or gas fitter confirms the vent route, the combustion air and a gas line that can deliver its full input. Get that quote before you order; our installation guide lists what they will ask. The warranty terms: 15 years are stated on the heat exchanger. Read what it requires: a licensed install, the gas type and regular flushing are the usual conditions. Flushing: hard water scales the heat exchanger. Service valves on the water lines turn the yearly flush into an hour with a bucket and a pump; our flushing and descaling guide shows the routine.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula.