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Written from the listing's specs, not from our own use · How we rate
The Noritz NR98SVLP Indoor Propane keeps it simple: an indoor gas tankless heater with a 9.8 GPM maximum flow. It is a good match for a family that showers back to back before school, at 7.4/10 on its documented specs.
| Brand | Noritz |
|---|---|
| Category | Gas tankless water heaters |
| Fuel | Propane |
| Stated mounting location | Indoor |
| Stated maximum flow | 9.8 GPM |
| Stated gas input | 199,900 BTU/h |
| Temperature range | 100 to 140 °F |
| ASIN | B00BY4DDBO |
Full listing title: Noritz NR98SVLP Indoor Only Tankless Hot Water Heater, Single Wall Vent, max. 199,900 Btuh, 9.8 Gpm - Liquid Propane
| Fuel | Liquid PropaneFull listing title |
|---|---|
| Stated mounting location | IndoorFull listing title |
| Stated maximum flow | 9.8 GpmFull listing title |
| Stated gas input | 199,900 BtuhFull listing title |
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. With January water coming in at 42 °F and a 105 °F shower, the rise is 63 °F and the real flow is lower; the maker's flow chart has that number. Our calculator counts a shower at 2 GPM, so on paper that's room for three showers at once, fewer when January water comes in cold.
What it has going for it
100 to 140 °F. The setpoint range per the listing. Above 120 °F at the tap is scalding territory for kids, so most homes set it lower.
Two at once: up to 9.8 GPM, and our calculator counts a shower at 2 GPM, so that's two showers and a tap on paper. How much of it is left in January is on the maker's flow chart, at a 63 °F rise.
One at a time: a smaller unit covers that for less money.
What the Noritz NR98SVLP Indoor Propane listing names:
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 $162.32 (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 B00BY4DDBO), where today's price, stock and seller apply.
Want the high-efficiency kind? The Rheem RTGH 9.5 GPM Propane Indoor (7.8/10) is a condensing unit, per its listing.
On natural gas, not propane? The MIZUDO 199,000 BTU Natural Gas Indoor (9.2/10) runs on natural gas.
Only one bathroom? The ThermoMate CZ422LP Propane Indoor (7.8/10) states up to 5 GPM.
Our take
The Noritz NR98SVLP Indoor Propane is about a 9.8 GPM maximum flow, and it doesn't pretend to be more. No buyer reviews yet, so the Noritz NR98SVLP Indoor Propane has to win you over on paper. The catch with this Noritz indoor gas tankless heater: no stated temperature hold, while most picks here claim ±1 °F. We'd pick it if two showers and the dishwasher run at the same time in your house; otherwise, put it next to the APUS 95,000 BTU Propane Indoor first.
Old tank out, unit on the wall, vent through the wall or the roof. Plan the gas line for 199,900 BTU/h; 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 Noritz NR98SVLP Indoor Propane goes in your cart, check your gas line: 199,900 BTU/h is a lot of gas at once, so ask your plumber whether the existing line can feed it.
9.8 GPM is the headline. In a northern January the water comes in near 42 °F, so a 105 °F shower needs a 63 °F rise and the real flow drops. Our flow-rate calculator runs the numbers for your house.
Ask the plumber to check the gas line size and the meter against the heater's input, and to quote the vent route at the same visit. Our install cost guide shows what that usually adds.
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 Noritz NR98SVLP Indoor Propane stacks up against the closest alternative, the APUS 95,000 BTU Propane Indoor.
| Criterion | Noritz NR98SVLP Indoor Propane | APUS 95,000 BTU Propane Indoor |
|---|---|---|
| Our rating | 7.4/10 | 7.4/10 |
| Max flow | 9.8 GPM | 4.42 GPM |
| Gas input | 199,900 BTU/h | 95,000 BTU/h |
| Efficiency | Not stated | 0.81 UEF |
| Temperature hold | Not stated | ±1 °F stated |
Both score 7.4/10. The APUS 95,000 BTU Propane Indoor adds a stated 0.81 UEF and a stated ±1 °F hold, while the Noritz NR98SVLP Indoor Propane brings more flow (9.8 GPM) and a bigger burner (199,900 BTU/h).
We rate it 7.4/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
The listing states a maximum flow of 9.8 GPM and a gas input of 199,900 BTU/h. 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 9.8 GPM. 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: 9.8 GPM is the headline. In a northern January the water comes in near 42 °F, so a 105 °F shower needs a 63 °F rise and the real flow drops. Our flow-rate calculator runs the numbers for your house. Vent and gas line: ask the plumber to check the gas line size and the meter against the heater's input, and to quote the vent route at the same visit. Our install cost guide shows what that usually adds. The warranty terms: 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.