Noritz NRC98-DV-LP Residential Liquid Propane Alternatives: 6 Similar Picks Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
If you plan to update your water system, reviewing Noritz NRC98-DV-LP residential liquid propane alternatives helps you find the right match for your home. The Noritz NRC98-DV-LP delivers a 9.8 GPM flow rate and 180,000 BTU heating output on 120-volt power. This performance reliably handles whole-home multi-fixture hot water demand on liquid propane. However, you might want a heater with integrated Wi-Fi monitoring, an outdoor installation option, a lighter weight than 65 pounds, or a different flow rate.
The 6 alternatives in this guide were chosen because their specifications overlap with the original Noritz model. These selections range from compact indoor models delivering 7.6 to 11.2 GPM to an outdoor non-condensing heater and a traditional 50-gallon storage tank. Comparing these published flow rates, physical dimensions, and fuel configurations ensures you select the best liquid propane setup for your household requirements.
Our top pick: Noritz 9.8 GPM Propane Tankless Water Heater.
Comparing Liquid Propane Tankless Alternatives
Rinnai 7.6 GPM Indoor Propane Tankless Water Heater
The Rinnai RE199iP provides an indoor non-condensing build weighing 53.4 pounds, which is over 11 pounds lighter than the 65-pound Noritz unit. This lower weight simplifies indoor mounting. However, you give up significant delivery volume, as this unit supplies 7.6 GPM compared to the 9.8 GPM produced by the Noritz. Its dimensions of 14.1 by 27.3 by 10.8 inches also occupy more wall space than the Noritz 8 by 9 by 24-inch frame. You should pick this Rinnai model if your indoor propane setup requires moderate flow for fewer simultaneous fixtures and you prioritize a lighter chassis over maximum gallons per minute.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Water Heater
The Rheem RTG outdoor heater increases burner output to 199,900 BTU/hr over the 180,000 BTU Noritz burner. It also integrates Wi-Fi hardware and weighs 40.5 pounds, making it nearly 25 pounds lighter than the 65-pound Noritz. Its outdoor non-condensing design eliminates indoor venting requirements entirely. In trade, you lose 0.3 GPM of capacity with its 9.5 GPM rating versus 9.8 GPM on the Noritz, and you cannot install it indoors. Pick this Rheem unit if you want to mount your liquid propane heater on an exterior wall to save interior utility space while gaining remote management.
Rheem RTGH 9.0 GPM Indoor Propane Tankless Water Heater
The Rheem RTGH indoor model adds integrated Wi-Fi connectivity and a rated 0.93 UEF, specifications not featured on the Noritz NRC98-DV-LP. At 59.9 pounds, it is also roughly five pounds lighter than the 65-pound Noritz. What you give up is total peak output, as its maximum flow rate reaches 9.0 GPM compared to the 9.8 GPM supplied by the Noritz. The Rheem unit also measures 17.7 inches wide, requiring more horizontal clearance than the 8-inch-wide Noritz casing. You should choose this model if you want indoor digital monitoring and high energy efficiency for multi-shower demand without needing peak 9.8 GPM output.
Rheem IKONIC 11.2 GPM Propane Tankless Heater
The Rheem IKONIC delivers 11.2 GPM, providing 1.4 GPM more flow capacity than the 9.8 GPM Noritz unit. It also incorporates factory Wi-Fi monitoring for system tracking from your mobile device. To gain this increased throughput, you give up compact sizing and ease of handling. The Rheem IKONIC weighs 77.6 pounds, which is over 12 pounds heavier than the 65-pound Noritz, and its dimensions of 17.3 by 28.6 by 13.7 inches demand considerably more installation space. Pick this model if your household runs multiple high-draw fixtures at the same time and requires maximum continuous flow beyond the Noritz limit.
MIZUDO 10.3 GPM Propane Tankless Water Heater
The MIZUDO tankless water heater delivers a 10.3 GPM maximum flow rate, outperforming the 9.8 GPM capacity of the Noritz. It also incorporates Wi-Fi control for modern wireless adjustments, a feature absent on the baseline Noritz unit. However, Noritz provides verified physical dimensions and a stated 180,000 BTU rating with standard 120-volt operation, whereas MIZUDO does not specify its BTU output or chassis measurements in this data. You should select the MIZUDO model if your priority is securing higher continuous volume and smart connectivity for a propane-fueled system running several appliances at the same time.
The Rheem Professional Classic uses a traditional 50-gallon storage tank rather than an on-demand tankless design. It provides a stored reserve of hot water without relying on minimum water flow activation or 120-volt electrical power. In contrast to the Noritz, it features a much lower burner rating of 36,000 BTU compared to 180,000 BTU, meaning it cannot produce continuous, endless hot water once the 50 gallons deplete. At 50 inches tall and 20 inches wide, it also occupies floor space instead of mounting cleanly to a wall. Choose this unit if you prefer conventional tank storage over wall-hung tankless heating.
Quick picks
Our 7 picks
Noritz 9.8 GPM Propane Tankless Water Heater
Best for: high-demand propane whole-home water heating
- Fuel Type
- Liquid Propane
- Flow Rate
- 9.8 GPM
- BTU
- 180000 BTU
- Voltage
- 120 Volt
- Dimensions
- 24 × 8 × 9 inches
- Weight
- 65 pounds
View on Amazon: Noritz 9.8 GPM Propane Tankless Water Heater
The Noritz 9.8 GPM Propane Tankless Water Heater is a residential tankless unit powered by liquid propane. It delivers up to 9.8 GPM flow rate with a 180,000 BTU heating capacity, requiring a standard 120-volt electrical connection. Measuring 24 by 8 by 9 inches and weighing 65 pounds, this unit suits you if you need high water volume across multiple fixtures simultaneously from a dedicated propane fuel supply.
Pros
- High flow rate of up to 9.8 GPM
- Strong 180,000 BTU heating output
- Uses standard 120-volt electrical connection
- Compact dimensions of 24 by 8 by 9 inches
Cons
- Weighs 65 pounds for mounting
- Requires a liquid propane supply rather than natural gas
- Requires access to a 120-volt power source
Good fit if
- You need up to 9.8 GPM of hot water output.
- You run your home water heating on liquid propane.
- You have a 120-volt electrical supply available.
Skip if
- You use natural gas rather than liquid propane.
- You cannot mount a 65-pound unit.
- You do not have a 120-volt power outlet nearby.
Verdict: Noritz 9.8 GPM Propane Tankless Water Heater provides high-capacity 9.8 GPM delivery and 180,000 BTU performance for propane-equipped households. It reliably supports simultaneous hot water fixtures when paired with 120-volt power.
Rinnai 7.6 GPM Indoor Propane Tankless Water Heater
Best for: indoor propane homes running multiple fixtures simultaneously
- Fuel Type
- Propane
- Flow Rate
- 7.6 GPM
- Installation Location
- Indoor
- Dimensions
- 27.3 x 14.1 x 10.8 inches
- Venting Type
- Non-Condensing
- Weight
- 53.4 pounds
View on Amazon: Rinnai 7.6 GPM Indoor Propane Tankless Water Heater
The Rinnai RE199iP is an indoor, non-condensing tankless water heater running on liquid propane. It supplies up to 7.6 GPM of hot water, which handles up to six fixtures simultaneously depending on incoming water temperatures. Measuring 27.3 by 14.1 by 10.8 inches, this wall-mounted unit saves floor space. You will find it suits medium to large households needing continuous propane hot water delivery.
Pros
- Delivers up to 7.6 GPM flow rate to run up to 6 fixtures at once
- Onboard LED screen displays error codes and service reminders
- Compact indoor profile measuring 27.3 by 14.1 by 10.8 inches
- Up to 15-year limited residential warranty on the heat exchanger
Cons
- Requires separate Controlr module purchase for WiFi access
- Lacks an integrated recirculation pump
- Labor warranty defaults from 5 years to 1 year without 90-day registration
Good fit if
- You need up to 7.6 GPM of indoor propane hot water across multiple fixtures.
- You have indoor wall space measuring at least 27.3 by 14.1 inches.
- You register the unit within 90 days of installation to secure the 5-year labor warranty.
Skip if
- You need built-in WiFi connectivity without buying an add-on module.
- You want an integrated recirculation pump included in the unit.
- You require an outdoor installation setup.
Verdict: Rinnai RE199iP Propane Tankless Water Heater delivers 7.6 GPM for indoor propane setups in a compact 53.4-pound footprint. It provides high multi-fixture capacity if you do not need integrated wireless controls or an internal pump.
Westinghouse 9.2 GPM Propane Indoor Tankless Heater
Best for: large homes with high hot water demand
- Fuel Type
- Propane
- Flow Rate
- 9.2 GPM
- BTU
- 199,000 BTU
- Installation Location
- Indoor
- Voltage
- 120 V
- Temperature Control
- ±1.8°F
View on Amazon: Westinghouse 9.2 GPM Propane Indoor Tankless Heater
This indoor propane unit delivers 9.2 GPM at 199,000 BTU. It maintains temperature stability within ±1.8°F using self-modulating technology. The 1:20 turndown ratio and 6-stage combustion optimize energy use. It includes freeze protection down to -13°F. You get consistent hot water for large homes with multiple bathrooms.
Pros
- 199,000 BTU output for high demand
- 9.2 GPM flow rate
- ±1.8°F temperature stability
- Freeze protection to -13°F
Cons
- Heavier at 56.7 pounds
- Larger dimensions at 24.8 inches tall
- Requires 120V AC power source
Good fit if
- You need high flow for 4+ bathrooms
- You want precise temperature control
- You install indoors with propane
Skip if
- You prefer outdoor installation
- You need natural gas fuel
- You have limited vertical space
Verdict: Westinghouse 9.2 GPM Propane Tankless Heater suits large households needing reliable indoor hot water. Its high BTU and flow rate handle simultaneous use effectively.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Water Heater
Best for: high-demand homes needing outdoor propane installation
- Fuel Type
- Liquid Propane
- Flow Rate
- 9.5 GPM
- BTU
- 199,900 BTU/hr
- Installation Location
- Outdoor
- Temperature Control
- ±1°F
- Certification
- CSA
View on Amazon: Rheem RTG 9.5 GPM Outdoor Propane Tankless Water Heater
This outdoor propane tankless heater provides up to 9.5 GPM flow rate at 199,900 BTU/hr, enough for three to four simultaneous showers. It mounts outside, eliminating the need for indoor exhaust venting. The unit includes WiFi connectivity, precision temperature adjustments down to 1°F, and a 0.82 UEF rating. It suits you if you need high-capacity whole-house hot water and prefer an exterior wall installation without running indoor vent pipes.
Pros
- 9.5 GPM flow rate and 199,900 BTU/hr output for 3 to 4 showers
- Outdoor installation requires no dedicated exhaust venting
- Built-in WiFi connectivity and digital LED ±1°F temperature control
- 15-year heat exchanger and 5-year parts warranty coverage
Cons
- Non-condensing design with 0.82 UEF rating
- Outdoor wall mounting only
- Requires professional installation
Good fit if
- You want an exterior-mounted unit that needs no indoor exhaust venting.
- You need high output for 3 to 4 simultaneous showers.
- You want remote tracking via built-in WiFi connectivity.
Skip if
- You require an indoor-mounted water heater.
- You prefer a condensing model with an efficiency rating higher than 0.82 UEF.
Verdict: Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater delivers robust 199,900 BTU/hr capacity and WiFi control without interior venting requirements. Its outdoor-only non-condensing build suits homes needing high flow from an exterior wall.
Rheem RTGH 9.0 GPM Indoor Propane Tankless Water Heater
Best for: multi-shower indoor liquid propane setups
- Fuel Type
- Liquid Propane
- Flow Rate
- 9.0 GPM at 35°F rise
- BTU
- 180,000 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- Digital LED, ±1°F
- Certification
- CSA
View on Amazon: Rheem RTGH 9.0 GPM Indoor Propane Tankless Water Heater
This indoor condensing tankless water heater runs on liquid propane and burns up to 180,000 BTU per hour. It provides a maximum flow rate of 9.0 GPM at a 35°F rise with a 0.93 Uniform Energy Factor. If you have a multi-bathroom home requiring up to four simultaneous showers, this unit delivers continuous hot water using direct-vent indoor installation and precision digital temperature controls.
Pros
- Delivers 9.0 GPM at a 35°F temperature rise
- 0.93 Uniform Energy Factor condensing operation
- Digital LED control with ±1°F temperature accuracy
- Built-in freeze protection and multi-point safety system
- 15-year heat exchanger and 5-year parts warranty coverage
Cons
- Configured for indoor direct-vent installation only
- Lacks WiFi connectivity on this specific model variation
Good fit if
- You need up to 9.0 GPM to run 3 to 4 simultaneous showers.
- You plan to vent a propane unit indoors.
- You want a high-efficiency condensing model with a 0.93 UEF rating.
Skip if
- You need an outdoor-mounted tankless unit.
- You want built-in WiFi controls included directly out of the box.
Verdict: Rheem RTGH 9.0 GPM Indoor Propane Tankless Heater provides high-efficiency indoor heating capable of supporting several showers at once. Its 0.93 UEF rating and precise digital controls make it a capable indoor liquid propane alternative.
Rheem IKONIC 11.2 GPM Propane Tankless Heater
Best for: high-demand indoor homes wanting integrated Wi-Fi monitoring
- Fuel Type
- Liquid Propane
- Flow Rate
- 11.2 GPM
- BTU
- 199,900 BTU/hr
- Installation Location
- Indoor
- Dimensions
- 28.6 x 17.3 x 13.7 inches
- Features
- WiFi
View on Amazon: Rheem IKONIC 11.2 GPM Propane Tankless Heater
The Rheem IKONIC 11.2 GPM Liquid Propane Tankless Heater is an indoor condensing unit designed to supply continuous hot water for simultaneous household fixtures. It delivers up to 11.2 GPM with a 199,900 BTU heat rating and includes built-in EcoNet Wi-Fi for mobile temperature and usage tracking. If you need high hot water output for running multiple fixtures at once without adding an external network module, this model fits your mechanical setup.
Pros
- High 11.2 GPM maximum flow rate
- 199,900 BTU heat input
- Built-in EcoNet Wi-Fi for mobile control and usage monitoring
- Compact side-to-side clearance of 1/2 inch
Cons
- Does not include integrated recirculation
- Requires an outdoor conversion kit for exterior mounting
- Heavier cabinet weighing 77.6 pounds
Good fit if
- You need up to 11.2 GPM to run multiple high-demand fixtures simultaneously.
- You want built-in Wi-Fi to monitor energy usage and adjust water temperatures remotely.
- You have tight wall clearance requirements down to 1/2 inch on the sides.
Skip if
- You require an integrated recirculation pump in the unit.
- You intend to install outdoors without purchasing additional conversion equipment.
Verdict: Rheem IKONIC 11.2 GPM Liquid Propane Tankless Heater provides high-capacity hot water output with integrated Wi-Fi management in an indoor form factor. It serves households running multiple fixtures concurrently that do not require internal recirculation hardware.
MIZUDO 10.3 GPM Propane Tankless Water Heater
Best for: high-demand propane homes needing smart control
- Fuel Type
- Propane
- Flow Rate
- 10.3 GPM
- Temperature Control
- ±1°F, up to 149°F
View on Amazon: MIZUDO 10.3 GPM Propane Tankless Water Heater
The MIZUDO 10.3 GPM Propane Tankless Water Heater provides on-demand hot water using liquid propane. It delivers flow rates up to 10.3 GPM and activates at a low flow rate of 0.53 GPM. You can set output temperatures up to 149°F with ±1°F precision, and monitor settings through built-in smart Wi-Fi control. An included vent kit suits installations requiring dedicated exhaust routing for whole-house propane setups.
Pros
- Delivers flow rates up to 10.3 GPM
- Low activation threshold of 0.53 GPM
- Precise ±1°F temperature control up to 149°F
- Integrated smart Wi-Fi control and included vent kit
Cons
- Requires a liquid propane supply line
- BTU rating not specified in manufacturer data
Good fit if
- You need whole-house propane flow reaching up to 10.3 GPM.
- You want remote adjustment via smart Wi-Fi control.
- You run fixtures with low flow rates down to 0.53 GPM.
Skip if
- You require natural gas rather than liquid propane.
- You need confirmed BTU specifications before purchase.
Verdict: MIZUDO 10.3 GPM Propane Tankless Water Heater offers high-volume propane delivery with precise temperature regulation and Wi-Fi capability. It functions as a capable whole-home alternative when you need high capacity and low activation thresholds.
Specifications side by side
| Spec | Noritz 9.8 GPM Propane Tankless Water Heater | Rinnai 7.6 GPM Indoor Propane Tankless Water Heater | Westinghouse 9.2 GPM Propane Indoor Tankless Heater | Rheem RTG 9.5 GPM Outdoor Propane Tankless Water Heater | Rheem RTGH 9.0 GPM Indoor Propane Tankless Water Heater | Rheem IKONIC 11.2 GPM Propane Tankless Heater | MIZUDO 10.3 GPM Propane Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Liquid Propane | Propane | Propane | Liquid Propane | Liquid Propane | Liquid Propane | Propane |
| Flow Rate | 9.8 GPM | 7.6 GPM | 9.2 GPM | 9.5 GPM | 9.0 GPM at 35°F rise | 11.2 GPM | 10.3 GPM |
| BTU | 180000 BTU | not specified | 199,000 BTU | 199,900 BTU/hr | 180,000 BTU/hr | 199,900 BTU/hr | not specified |
| Installation Location | not specified | Indoor | Indoor | Outdoor | Indoor | Indoor | not specified |
| Voltage | 120 Volt | not specified | 120 V | not specified | not specified | not specified | not specified |
| Temperature Control | not specified | not specified | ±1.8°F | ±1°F | Digital LED, ±1°F | not specified | ±1°F, up to 149°F |
| Certification | not specified | not specified | CSA | CSA | CSA | not specified | not specified |
| Dimensions | not specified | 27.3 x 14.1 x 10.8 inches | 24.8 x 15.9 x 15.9 inches | 20.8 x 13.5 x 9.4 inches | 23.7 x 17.7 x 9.8 inches | 28.6 x 17.3 x 13.7 inches | not specified |
| Venting Type | not specified | Non-Condensing | not specified | Non-Condensing | not specified | not specified | not specified |
| Features | not specified | not specified | not specified | WiFi | WiFi | WiFi | not specified |
| Weight | 65 pounds | 53.4 pounds | 56.7 pounds | 40.5 pounds | 59.9 pounds | 77.6 pounds | not specified |
| Size | not_applicable | 9.8 GPM | not specified | 9.5 GPM (WiFi) | 9.0 GPM (Without WiFi) | 11.2 GPM (no Recirc) | not specified |
| Color | Liquid Propane | Silver | Grey 103PI | Gray | Gray | Gray | not specified |
| Model | NRC98-DV-LP | REU-VE2737FFD-US-P | HW199A0G-LP | RTG-95XELP-3 | RTGH-90DVLP-3 | RECTGH-S11iP | not specified |
If you also evaluate PC cooling hardware, specs for arctic liquid freezer ii 280 alternatives cover similar thermal dimensions.
Frequently asked questions
Which liquid propane alternative offers the highest flow rate?
The Rheem IKONIC RECTGH-S11iP provides the highest flow rate among these alternatives at 11.2 GPM. This capacity supports multiple fixtures running at the same time indoors. It measures 17.3 inches wide by 28.6 inches high and weighs 77.6 pounds, making it larger and heavier than standard options.
Can you install any of these propane tankless alternatives outdoors?
Yes, the Rheem RTG-95XELP-3 is built specifically for outdoor installation. It features an exterior non-condensing design rated at 199,900 BTU per hour and 9.5 GPM. Choosing this model eliminates indoor venting requirements, and it comes in a compact 40.5-pound cabinet with built-in Wi-Fi monitoring.
Which indoor propane alternative delivers the highest heating output?
The Westinghouse HW199A0G-LP provides the highest heating capacity among the indoor models at 199,000 BTU. It delivers a maximum flow rate of 9.2 GPM for demanding indoor hot water needs. The unit weighs 56.7 pounds and measures 15.9 inches wide by 24.8 inches high by 15.9 inches long.
Which liquid propane alternatives include Wi-Fi functionality?
Several alternatives feature wireless connectivity, including the Rheem RTG-95XELP-3, Rheem IKONIC RECTGH-S11iP, Rheem RTGH-90DVLP-3, and the MIZUDO 10.3 GPM model. These connected heaters let you monitor performance remotely. In contrast, standard units like the Noritz NRC98-DV-LP and Westinghouse HW199A0G-LP do not list wireless connectivity in their published specifications.
What is the lightest liquid propane tankless heater on this list?
The Rheem RTG-95XELP-3 is the lightest option listed, weighing 40.5 pounds. By comparison, the Noritz NRC98-DV-LP weighs 65 pounds. The lighter cabinet simplifies exterior mounting on standard wall framing while still delivering a 9.5 GPM flow rate for your household hot water fixtures.
How does the Rheem RTGH-90DVLP-3 compare to the Noritz NRC98-DV-LP for indoor use?
The Rheem RTGH-90DVLP-3 offers a 9.0 GPM flow rate and a 0.93 UEF efficiency rating for indoor liquid propane setups. It weighs 59.9 pounds, making it about five pounds lighter than the 65-pound Noritz NRC98-DV-LP. It also includes digital controls to manage multi-fixture hot water demands across your home.
Which alternative matches high-demand needs if you exceed 10 GPM?
Both the Rheem IKONIC RECTGH-S11iP and the MIZUDO propane water heater exceed 10 GPM. The Rheem IKONIC delivers up to 11.2 GPM, while the MIZUDO provides up to 10.3 GPM. These models exceed the 9.8 GPM rating of the Noritz NRC98-DV-LP to handle heavy simultaneous fixture demands.