Looking Beyond the Rheem IKONIC 11.2 GPM Liquid Propane Tankless Water Heater? 6 Alternatives Worth a Look
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The rheem ikonic 11 2 gpm liquid propane tankless water heater delivers 199,900 BTUs and an 11.2 GPM flow rate for large households. Its compact indoor design and built-in recirculation support up to four simultaneous showers while reducing water waste. EcoNet Wi-Fi connectivity allows you to monitor energy use and adjust temperatures remotely. These specs make it a strong choice for homes needing high capacity and smart control.
You might look elsewhere if you need a lower flow rate for smaller spaces or prefer natural gas over propane. Some buyers prioritize raw efficiency without smart features, while others seek a more budget-friendly option. This list includes 6 alternatives chosen because their specifications overlap with the original. These models share key traits like indoor installation and propane fuel, but offer different flow capacities or sizes. Review the data below to find the unit that matches your specific hot water demands.
Our top pick: Rheem IKONIC 11.2 GPM Propane Tankless Water Heater.
How alternatives compare to the Rheem IKONIC
Rheem RTGH 9.5 GPM Propane Tankless Water Heater
The Rheem RTGH 9.5 GPM offers slightly lower flow than the IKONIC model. It delivers 9.5 GPM compared to the 11.2 GPM output. This unit remains a strong choice for large homes needing high flow indoors. It retains WiFi connectivity for remote control. The physical footprint is smaller at 23.7 inches tall. It weighs less at 59.9 pounds. You save space and weight but gain less simultaneous shower capacity. Choose this if you need reliable indoor propane heating without the bulk of the highest-capacity model.
Rheem RTG Series 7.0 GPM Propane Tankless Water Heater
The Rheem RTG 7.0 GPM provides a lower flow rate of 7.0 GPM. It suits homes with moderate water usage needs. This model uses non-condensing venting technology. It maintains WiFi features for smart monitoring. The unit is more compact at 13.5 inches wide. It weighs significantly less at 46.5 pounds. You trade maximum flow for a lighter, smaller installation profile. This option works well for buyers who prioritize efficiency and precision over high-volume water delivery for multiple bathrooms.
MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi
The MIZUDO 7.9 GPM offers a mid-range flow rate of 7.9 GPM. It includes WiFi for app-based temperature control. The unit operates at 180,000 BTUs. It is lighter at 39.6 pounds and has a square footprint. You get precise temperature management and steady performance. This model fits mid-sized homes well. It lacks the high flow of the IKONIC but provides robust smart features. Pick this if you value app connectivity and a compact indoor design over maximum hot water volume.
Rheem IKONIC 10.1 GPM Natural Gas Tankless Water Heater
The Rheem IKONIC 10.1 GPM Natural Gas model uses natural gas instead of propane. It offers 10.1 GPM flow with recirculation. The dimensions match the propane version exactly. It weighs 86 pounds and includes WiFi connectivity. You get similar smart features and compact indoor placement. The main difference is the fuel source. Choose this if your home has natural gas infrastructure. It provides high capacity and app control for indoor use without the need for propane tank connections.
Ranein 4.3 GPM Indoor Propane Tankless Water Heater
The Ranein 4.3 GPM provides a much lower flow rate of 4.3 GPM. It is designed for small households with low water demand. The unit is compact at 14.2 inches square. It lacks WiFi features in the provided data. You get reliable heating for single-point or light multi-point tasks. This model fits small indoor spaces well. Choose this if you need a budget-friendly option for low simultaneous usage. It sacrifices high flow capacity for a smaller, simpler installation in smaller homes.
VEVOR 4.3 Gal Propane Tankless Water Heater
The VEVOR 4.3 Gal unit uses a different storage-based approach. It holds 4.3 gallons of heated water. It is very light at 19.8 pounds. The dimensions are compact at 13.8 inches square. You get precise temperature control and safety features. This model lacks the high flow of tankless units. It fits small homes needing steady temperature over volume. Choose this if you prioritize compact size and precise control. It is a lighter alternative for small households that do not require high-volume continuous hot water.
Quick picks
Our 7 picks
Rheem IKONIC 11.2 GPM Propane Tankless Water Heater
Best for: large households needing high flow
- 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 Water Heater Affiliate link
This indoor unit delivers 11.2 GPM of hot water using liquid propane. It features a 199,900 BTU burner and built-in WiFi for remote control. The compact design allows for flexible installation with minimal side clearance. It includes a recirculation pump to save water. This heater suits large households needing high flow rates for multiple simultaneous uses.
Pros
- High 11.2 GPM flow rate
- 199,900 BTU heating capacity
- Built-in WiFi app control
- Compact 17.3-inch width
- Low NOx emissions
Cons
- Heavy at 86 pounds
- Indoor installation only
- Requires outdoor kit for exterior use
Good fit if
- You need high flow for multiple bathrooms
- You want WiFi monitoring and control
- You have limited wall space
Skip if
- You require outdoor installation without a kit
- You use natural gas instead of propane
- You need a lighter unit for easy mounting
Verdict: Rheem IKONIC 11.2 GPM Propane offers top-tier flow for large homes with its 199,900 BTU output. It fits buyers who prioritize smart connectivity and compact indoor placement.
Rheem RTGH 9.5 GPM Propane Tankless Water Heater
Best for: Large homes needing high flow indoors
- Fuel Type
- Liquid Propane
- Flow Rate
- 9.5 GPM
- BTU
- 199,900 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- ±1°F
- Certification
- CSA
View on Amazon: Rheem RTGH 9.5 GPM Propane Tankless Water Heater Affiliate link
This Rheem RTGH unit delivers 9.5 GPM at a 35°F rise using 199,900 BTUs. It features a 0.93 UEF and indoor direct-vent design. The digital LED control offers ±1°F precision. It suits large families needing whole-house hot water. The unit weighs 59.9 pounds and measures 23.7 inches high. It includes a 15-year heat exchanger warranty.
Pros
- 9.5 GPM flow rate for whole-house use
- 0.93 Uniform Energy Factor for efficiency
- ±1°F digital temperature precision
- Indoor direct-vent installation
Cons
- No WiFi connectivity in this specific 9.5 GPM variant
- Indoor-only installation requirement
- Heavier build at 59.9 pounds
Good fit if
- You need high flow for multiple bathrooms
- You have indoor venting space
- You want precise temperature control
Skip if
- You require outdoor installation
- You need smart home integration
- You have limited wall support strength
Verdict: Rheem RTGH 9.5 GPM Propane fits large households with indoor venting who prioritize raw flow and efficiency over smart features. It delivers consistent hot water for up to four simultaneous showers.
Rheem RTG Series 7.0 GPM Propane Tankless Water Heater
Best for: Whole-house propane heating with 7.0 GPM
- Fuel Type
- Liquid Propane
- Flow Rate
- 7.0 GPM
- BTU
- 160,000 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- ±1°F
- Certification
- CSA
View on Amazon: Rheem RTG Series 7.0 GPM Propane Tankless Water Heater Affiliate link
The Rheem RTG 7.0 GPM Liquid Propane Tankless Water Heater delivers 160,000 BTUs of heating power. It provides 7.0 GPM at a 35°F rise, supporting two to three simultaneous showers. The unit features a 0.82 UEF rating for efficiency and ±1°F digital temperature control. It is designed for indoor installation with a non-condensing venting system. This model suits whole-house residential use for large families.
Pros
- 160,000 BTU/hr output for strong performance
- 7.0 GPM flow rate supports multiple fixtures
- 0.82 Uniform Energy Factor reduces energy use
- Digital LED panel with ±1°F precision
- Space-saving wall-mount design
Cons
- 7.0 GPM is lower than the 11.2 GPM leader
- No WiFi connectivity in this specific variant
- Requires professional indoor installation
Good fit if
- You need a reliable propane heater for 2-3 bathrooms
- You want precise temperature control within ±1°F
- You prefer a high-efficiency non-condensing unit
Skip if
- You require WiFi remote monitoring
- You need more than 7.0 GPM for high demand
- You are looking for a budget outdoor unit
Verdict: Rheem RTG 7.0 GPM Propane Tankless Heater offers consistent hot water for homes with moderate simultaneous usage. It fits buyers who prioritize efficiency and precision over maximum flow rate or smart features.
MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi
Best for: WiFi-controlled indoor propane heating
- Fuel Type
- Propane
- Flow Rate
- 7.9 GPM
- BTU
- 180,000 BTU/h
- Installation Location
- Indoor
- Voltage
- 120V AC
- Temperature Control
- 95–149°F, ±1°F
View on Amazon: MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi Affiliate link
The MIZUDO 7.9 GPM propane heater delivers 180,000 BTU/h for indoor use. It maintains temperature stability within ±1°F and connects to WiFi for remote adjustments. The sealed combustion system draws air from outside, ensuring safe operation. This unit suits larger households needing steady hot water across multiple fixtures simultaneously.
Pros
- 7.9 GPM flow rate for high demand
- 180,000 BTU/h input power
- WiFi app control for remote monitoring
- Temperature stability within ±1°F
Cons
- Lower flow rate than the 11.2 GPM leader
- 2-year unit warranty is shorter than the 5-year heat exchanger coverage
- Indoor-only installation requires direct venting
Good fit if
- You need WiFi control for schedule adjustments
- You want stable temperature within ±1°F
- You have a larger household with 3-5 draw points
Skip if
- You require more than 7.9 GPM flow
- You need outdoor installation capability
- You prefer natural gas over propane
Verdict: MIZUDO 7.9 GPM Propane Tankless Heater offers precise temperature control and remote management for mid-sized homes. It fits buyers who prioritize app connectivity and steady performance over maximum flow capacity.
Rheem IKONIC 10.1 GPM Natural Gas Tankless Water Heater
Best for: Indoor homes needing high flow and WiFi
- Fuel Type
- Natural Gas
- Flow Rate
- 10.1 GPM
- BTU
- 180,000 BTUs
- Installation Location
- Indoor
- Dimensions
- 28.6 x 17.3 x 13.7 inches
- Features
- WiFi
View on Amazon: Rheem IKONIC 10.1 GPM Natural Gas Tankless Water Heater Affiliate link
This Rheem unit delivers 10.1 GPM of hot water using natural gas. It features 180,000 BTUs and built-in WiFi for remote control. The compact design allows for flexible indoor installation. You get hot-start programming to prevent cold water bursts. This model suits homes needing high flow rates with smart monitoring capabilities.
Pros
- 10.1 GPM flow rate for multiple simultaneous uses
- 180,000 BTU heating power
- Built-in EcoNet WiFi for app control
- Hot-start programming prevents cold water bursts
Cons
- Indoor installation only
- Heavier at 86 pounds
- No outdoor capability without conversion kit
Good fit if
- You need high flow rates for large households
- You want WiFi monitoring and control
- You have indoor space for installation
Skip if
- You require outdoor installation
- You use propane fuel
- You prefer a lighter unit
Verdict: Rheem IKONIC 10.1 GPM Natural Gas offers high capacity and smart features for indoor homes. It fits users prioritizing flow rate and app connectivity over outdoor flexibility.
Ranein 4.3 GPM Indoor Propane Tankless Water Heater
Best for: Low-flow indoor propane needs
- Fuel Type
- Propane Gas
- Flow Rate
- 4.3 GPM
- BTU
- 100,000 BTU
- Installation Location
- Indoor
- Temperature Control
- 95°F-155°F
- Dimensions
- 22.5 x 14.2 x 14.2 inches
View on Amazon: Ranein 4.3 GPM Indoor Propane Tankless Water Heater Affiliate link
This Ranein unit delivers 4.3 GPM at 100,000 BTU using propane. It features a copper heat exchanger and adjustable temperature control from 95°F to 155°F. The device includes four preset modes for different uses. It is designed for indoor installation and comes with a vent pipe. This model suits buyers needing a compact, on-demand hot water solution for lower flow requirements.
Pros
- 100,000 BTU heating power
- 4.3 GPM flow rate
- Copper heat exchanger
- Four intelligent preset modes
- Includes vent pipe
Cons
- Lower 4.3 GPM flow rate
- Indoor installation only
- Not suitable for elevations over 2,000 ft
Good fit if
- You need a compact indoor unit
- You use propane fuel
- You require 4.3 GPM capacity
Skip if
- You need higher flow rates
- You require outdoor installation
- You live above 2,000 ft elevation
Verdict: Ranein 4.3 GPM Propane Indoor Heater fits small households with low simultaneous water demand. It provides reliable heating for single-point use or light multi-point tasks in indoor settings.
VEVOR 4.3 Gal Propane Tankless Water Heater
Best for: Small homes needing precise temp control
- Fuel Type
- Propane
- BTU
- 100,000 BTU/h
- Installation Location
- Indoor
- Temperature Control
- ±1°F
- Dimensions
- 21.7 x 13.8 x 13.8 inches
- Use
- Whole House
View on Amazon: VEVOR 4.3 Gal Propane Tankless Water Heater Affiliate link
The VEVOR 4.3 Gal propane unit delivers 100,000 BTU/h of heating power for indoor whole-house use. It features precise ±1°F temperature control via smart sensors and an LED display for real-time monitoring. The compact design measures 21.7 x 13.8 x 13.8 inches and weighs 19.8 pounds. It includes multiple safety protections like anti-freeze and flameout detection. This heater suits homes needing reliable instant hot water with straightforward installation.
Pros
- 100,000 BTU/h heating output
- ±1°F precision temperature control
- LED display with touch panel
- Multiple built-in safety protections
Cons
- Lower flow rate than competitors
- No WiFi connectivity listed
- Smaller capacity for large households
Good fit if
- You need a compact indoor unit
- You want precise temperature stability
- You prefer propane fuel
Skip if
- You require high flow rates
- You need smart home integration
- You have a large family
Verdict: VEVOR 4.3 Gal Propane Tankless Heater fits small households prioritizing steady temperature over high volume. It lacks the flow capacity of larger models but offers precise control and safety features.
Specifications side by side
| Spec | Rheem IKONIC 11.2 GPM Propane Tankless Water Heater | Rheem RTGH 9.5 GPM Propane Tankless Water Heater | Rheem RTG Series 7.0 GPM Propane Tankless Water Heater | MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi | Rheem IKONIC 10.1 GPM Natural Gas Tankless Water Heater | Ranein 4.3 GPM Indoor Propane Tankless Water Heater | VEVOR 4.3 Gal Propane Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Liquid Propane | Liquid Propane | Liquid Propane | Propane | Natural Gas | Propane Gas | Propane |
| Flow Rate | 11.2 GPM | 9.5 GPM | 7.0 GPM | 7.9 GPM | 10.1 GPM | 4.3 GPM | not stated |
| BTU | 199,900 BTU/hr | 199,900 BTU/hr | 160,000 BTU/hr | 180,000 BTU/h | 180,000 BTUs | 100,000 BTU | 100,000 BTU/h |
| Installation Location | Indoor | Indoor | Indoor | Indoor | Indoor | Indoor | Indoor |
| Voltage | not stated | not stated | not stated | 120V AC | not stated | not stated | not stated |
| Temperature Control | not stated | ±1°F | ±1°F | 95–149°F, ±1°F | not stated | 95°F-155°F | ±1°F |
| Certification | not stated | CSA | CSA | CSA | not stated | not stated | not stated |
| Dimensions | 28.6 x 17.3 x 13.7 inches | 23.7 x 17.7 x 9.8 inches | 24.2 x 13.5 x 10.3 inches | 25 x 16.3 x 7.3 in | 28.6 x 17.3 x 13.7 inches | 22.5 x 14.2 x 14.2 inches | 21.7 x 13.8 x 13.8 inches |
| Use | not stated | not stated | not stated | not stated | not stated | Whole House | Whole House |
| Venting Type | not stated | not stated | Non-Condensing | not stated | not stated | not stated | not stated |
| Features | WiFi | WiFi | WiFi | WiFi | WiFi | not stated | not stated |
| Weight | 86 pounds | 59.9 pounds | 46.5 pounds | 39.6 pounds | 86 pounds | not stated | 19.8 pounds |
| Size | 11.2 GPM (w Recirc) | 9.5 GPM (Without WiFi) | 7.0 GPM (No WiFi) | Propane Gas, 7.9 GPM, 180,000 BTU, Indoor | 10.1 GPM (w Recirc) | 4.3GPM Indoor | 4.3 Gal |
| Color | Gray | Gray | Gray | White 7.9P | Gray | LPG | Gray |
| Model | RECTGH-SR11iP | RTGH-95DVLP-3 | RTG-70DVLP-3 | HW180A0W-LP | RECTGH-SR10iN | RANEIN-43GPM-100KBTU | JSQ30-B |
If you want outdoor heat from your fuel supply, compare the best propane patio heaters sorted by heat output.
Frequently asked questions
How does the Rheem IKONIC 11.2 GPM propane model compare to the RTGH 9.5 GPM?
The IKONIC 11.2 GPM delivers higher flow with 199,900 BTUs, making it better for large households needing maximum hot water. The RTGH 9.5 GPM offers slightly lower output but remains efficient for indoor use. Both units support WiFi connectivity and fit indoor installations. The IKONIC is larger and heavier, while the RTGH is more compact.
Is the Rheem IKONIC 11.2 GPM suitable for small homes?
This unit provides 11.2 GPM with recirculation, which may be excessive for small households. If you need less flow, consider the Rheem RTG 7.0 GPM or the Ranein 4.3 GPM models. These alternatives offer lower capacity while still providing reliable indoor propane heating. The IKONIC is designed for large homes with high simultaneous demand.
Does the Rheem IKONIC 11.2 GPM require outdoor installation?
No, this model is designed for indoor installation. It features a compact gray design that fits inside your home. The unit weighs 86 pounds and measures 17.3 inches wide. You can connect it to propane gas for efficient heating. Ensure your indoor space meets ventilation requirements for safe operation.
Can I control the Rheem IKONIC 11.2 GPM remotely?
Yes, the unit includes WiFi connectivity via the EcoNet app. You can monitor and adjust settings from your smartphone. This feature allows you to manage hot water usage while away from home. The RTGH 9.5 GPM and RTG 7.0 GPM also offer similar smart capabilities for remote control.
What is the difference between the IKONIC 11.2 GPM propane and natural gas versions?
The propane IKONIC 11.2 GPM and natural gas IKONIC 10.1 GPM share identical dimensions and weight. Both are built for indoor use and include WiFi connectivity. The propane model delivers 199,900 BTUs, while the natural gas version offers 10.1 GPM with recirculation. Choose based on your available fuel source.
How does the MIZUDO 7.9 GPM compare to the Rheem IKONIC?
The MIZUDO 7.9 GPM provides lower flow than the IKONIC 11.2 GPM model. It weighs only 39.6 pounds, making it significantly lighter and easier to install. Both units support indoor propane use and WiFi control. The MIZUDO is better for mid-sized homes, while the IKONIC suits larger households needing higher capacity.
Is the VEVOR 4.3 Gal propane heater a tankless unit?
No, the VEVOR model is a 4.3-gallon tank heater, not tankless. It stores water internally, unlike the Rheem IKONIC or MIZUDO units. This design provides precise temperature control for small homes. It lacks the continuous flow of tankless models but offers steady heating for low-demand households.