6 Best Alternatives to the Rheem RTGH 9.5 GPM Propane (2026)
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The Rheem RTGH 9.5 GPM Propane Tankless Heater delivers high flow rates and smart connectivity for large families. If you are researching rheem rtgh 9 5 gpm propane alternatives, you may need different specs or features. This unit offers 9.5 GPM at a 35°F rise and includes WiFi control. Its indoor installation and condensing technology provide high efficiency.
You might look for other options if you need natural gas instead of propane. Some users prefer outdoor installation to save indoor space. Others may want a lower flow rate for smaller households or a higher capacity for whole-house demand. The alternatives listed here share key specifications with the original model. They overlap in flow rate, fuel type, or smart features. This guide compares these products based on their published data to help you find the right fit.
How each alternative compares
Rheem RTG 9.5 GPM Natural Gas Water Heater
The Rheem RTG 9.5 GPM Natural Gas model swaps propane for natural gas. It shares the same 9.5 GPM flow rate and WiFi connectivity, making it suitable for homes with existing natural gas lines. You get similar smart control and high capacity. The main difference is the fuel source. This unit uses a non-condensing design, which may affect efficiency compared to condensing models. It is slightly narrower at 13.5 inches wide. If you prefer natural gas over propane, this is a direct alternative. It maintains the high flow needed for large families while offering remote monitoring via the app.
Rheem RTGH Series 9.5 GPM Indoor Natural Gas
The Rheem RTGH 9.5 GPM Natural Gas condensing unit offers high efficiency for natural gas users. It matches the 9.5 GPM flow rate but uses natural gas instead of propane. This model is heavier at 59.9 pounds and includes WiFi for remote control. It features a stainless steel construction for durability. The condensing technology likely provides better energy efficiency than non-condensing alternatives. You get precise temperature control and whole-house coverage. This option is ideal if you have natural gas and want a high-efficiency condensing system. It is slightly wider than the non-condensing RTG model but offers robust performance for multi-bathroom homes.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater
The Rheem RTG 9.5 GPM Outdoor Propane unit is designed for exterior installation. It provides the same 9.5 GPM flow rate and includes WiFi for remote monitoring. This model is lighter at 39.3 pounds and narrower at 13.5 inches. It uses a non-condensing design, which simplifies venting for outdoor setups. You save indoor space by placing it outside. The unit is built to withstand outdoor conditions. This is a practical choice if you have limited indoor space or prefer outdoor installation. It maintains high hot water delivery while offering smart features. The compact size makes it easier to mount in tight outdoor areas.
Rheem RTG Series 7.0 GPM Propane Tankless Water Heater
The Rheem RTG 7.0 GPM Propane model offers a lower flow rate of 7.0 GPM. It is designed for indoor propane use with WiFi connectivity. This unit is lighter and narrower, weighing 46.5 pounds and measuring 13.5 inches wide. It uses a non-condensing design. You get precise temperature control and smart features. The reduced flow rate makes it suitable for homes with moderate simultaneous demand. It is a good option if you do not need the full 9.5 GPM capacity. The compact size fits easily in tight spaces. You still benefit from remote monitoring and efficient propane heating for smaller households or apartments.
Rheem IKONIC 11.2 GPM Propane Tankless Water Heater
The Rheem IKONIC 11.2 GPM Propane unit delivers a significantly higher flow rate of 11.2 GPM. It includes WiFi and recirculation features for instant hot water. This model is larger, weighing 86 pounds and measuring 28.6 inches high. It is designed for large homes needing maximum hot water capacity. You get superior flow for multiple simultaneous uses. The recirculation feature ensures hot water is always available. This option is ideal for large families or homes with many bathrooms. It sacrifices compact size for higher performance. The smart features allow you to monitor and control the unit remotely. It is a premium choice for high-demand households.
MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi
The MIZUDO 7.9 GPM Indoor Propane Heater offers a moderate flow rate of 7.9 GPM. It includes WiFi for app control and precise temperature management. This unit is lighter at 39.6 pounds and has a white finish. It is designed for indoor installation with propane. The 180,000 BTU output provides steady heat. You get smart connectivity and reliable performance. This model is suitable for homes that do not require the highest flow rates. It offers a balance between capacity and compact size. The app control allows you to monitor usage remotely. It is a practical choice for buyers who prioritize smart features and steady heating over maximum GPM output.
Quick picks
Our 7 picks
Rheem RTGH 9.5 GPM Propane Tankless Heater
Best for: large families needing high flow and efficiency
- Fuel Type
- Liquid Propane
- Flow Rate
- 9.5 GPM at 35°F rise
- BTU
- 199,900 BTU/hr
- Installation Location
- Indoor
- Dimensions
- 23.7 x 17.7 x 9.8 inches
- Features
- WiFi
View on Amazon: Rheem RTGH 9.5 GPM Propane Tankless Heater Affiliate link
This Rheem tankless water heater delivers 9.5 GPM at a 35°F rise using liquid propane. It features 199,900 BTU/hr output and a 0.93 UEF rating. The unit is designed for indoor installation with direct venting. It includes built-in Wi-Fi for remote monitoring. This model suits large households needing high flow rates and energy efficiency.
Pros
- 9.5 GPM flow rate for whole-house use
- 0.93 Uniform Energy Factor for low gas bills
- Built-in EcoNet Wi-Fi and LeakGuard technology
- Flexible venting with PVC runs up to 150 ft
Cons
- Indoor installation only requires direct venting setup
- Heavier at 51.3 pounds than non-condensing models
- WiFi feature not available on all size variations
Good fit if
- You need 9.5 GPM for 3-4 simultaneous showers
- You want ultra-low NOx emissions compliance
- You prefer indoor installation with flexible venting
Skip if
- You require outdoor installation capability
- You need a unit without Wi-Fi connectivity
- You have limited space for a 23.7-inch height
Verdict: Rheem RTGH 9.5 GPM Propane Indoor offers high efficiency and smart features for large families. It fits homes needing robust hot water flow with modern connectivity options.
Rheem RTG 9.5 GPM Natural Gas Water Heater
Best for: Large homes with natural gas and WiFi needs
- Fuel Type
- Natural Gas
- Flow Rate
- 9.5 GPM
- BTU
- 199,900 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- ±1°F
- Certification
- CSA
View on Amazon: Rheem RTG 9.5 GPM Natural Gas Water Heater Affiliate link
This Rheem RTG unit delivers 9.5 GPM of hot water using natural gas. It features a 199,900 BTU/hr output and WiFi connectivity for remote control. The indoor, non-condensing design includes a digital LED panel with ±1°F precision. It suits whole-house needs for 3-4 simultaneous showers. The compact wall-mount form saves floor space. You get consistent temperature control and built-in safety features like freeze protection.
Pros
- 9.5 GPM flow rate for multiple bathrooms
- WiFi enabled for remote monitoring
- Digital LED control with ±1°F precision
- 199,900 BTU/hr high output
- Space-saving wall-mount design
Cons
- Indoor installation only
- Non-condensing venting requires specific clearance
- Natural gas fuel type limits placement
Good fit if
- You need high flow for multiple showers
- You want WiFi remote control
- You have indoor natural gas hookups
Skip if
- You need outdoor installation
- You use propane fuel
- You require condensing efficiency
Verdict: Rheem RTG 9.5 GPM Natural Gas Indoor is a strong choice for large homes needing high flow and smart features. It fits users with existing natural gas lines who want precise temperature control and remote access via WiFi.
Rheem RTGH Series 9.5 GPM Indoor Natural Gas
Best for: large homes with natural gas
- Fuel Type
- Natural Gas
- Flow Rate
- 9.5 GPM at 35°F rise
- BTU
- 199,900 BTU/hr
- Installation Location
- Indoor
- Voltage
- 120 V
- Temperature Control
- Digital LED, ±1°F
View on Amazon: Rheem RTGH Series 9.5 GPM Indoor Natural Gas Affiliate link
This Rheem tankless heater delivers 9.5 GPM at a 35°F rise using 199,900 BTU/hr of natural gas. 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 by 17.7 inches. It includes a 15-year heat exchanger warranty.
Pros
- 9.5 GPM flow rate at 35°F rise
- 0.93 Uniform Energy Factor for efficiency
- Digital LED control with ±1°F precision
- 199,900 BTU/hr heating capacity
- 15-year heat exchanger warranty
Cons
- Natural gas fuel type limits outdoor use
- Indoor installation only
- No WiFi connectivity in this specific model
Good fit if
- You need high flow for multiple bathrooms
- You have existing natural gas lines
- You want high efficiency ratings
Skip if
- You require propane fuel
- You need outdoor installation
- You want WiFi remote control
Verdict: Rheem RTGH 9.5 GPM Natural Gas provides reliable whole-house hot water for large homes with natural gas. Its high efficiency and precise temperature control make it ideal for multi-bathroom setups.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater
Best for: outdoor whole-house propane heating
- Fuel Type
- Liquid Propane
- Flow Rate
- 9.5 GPM at 35°F rise
- BTU
- 199,900 BTU/hr
- Installation Location
- Outdoor
- Temperature Control
- Digital LED, ±1°F
- Certification
- CSA
View on Amazon: Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater Affiliate link
This outdoor unit delivers 9.5 GPM at a 35°F rise using liquid propane. It produces 199,900 BTUs with a 0.82 UEF rating. The digital LED panel allows ±1°F adjustments. You get built-in freeze protection and flame failure safety. It fits whole-house needs for 3-4 simultaneous showers. The metal cabinet is designed for wall mounting outdoors.
Pros
- 9.5 GPM flow rate at 35°F rise
- 199,900 BTU/hr output
- Digital LED temperature control with ±1°F precision
- 0.82 Uniform Energy Factor rating
- Built-in freeze protection
Cons
- Outdoor installation only
- Non-condensing venting design
- No WiFi connectivity in this specific model
Good fit if
- You need outdoor placement for your water heater
- You want a high-flow unit for multiple bathrooms
- You prefer precise digital temperature adjustments
Skip if
- You require indoor installation
- You need WiFi remote monitoring
- You are looking for a condensing unit
Verdict: Rheem RTG 9.5 GPM Propane Outdoor provides strong hot water flow for whole-house use. It is a practical choice for homeowners who can install the unit outside and need reliable propane heating.
Rheem RTG Series 7.0 GPM Propane Tankless Water Heater
Best for: Indoor propane homes needing precise temp control
- 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-70DVLP-3 is a 7.0 GPM liquid propane tankless water heater designed for indoor use. It delivers 160,000 BTU/hr with a 0.82 UEF rating. This unit features ±1°F digital temperature control and non-condensing venting. It suits homes needing reliable hot water for two to three simultaneous fixtures. The compact wall-mount design saves floor space while providing consistent performance.
Pros
- 7.0 GPM flow rate at 35°F rise
- 160,000 BTU/hr output capacity
- 0.82 Uniform Energy Factor efficiency rating
- ±1°F precise digital temperature control
Cons
- Lower 7.0 GPM capacity compared to 9.5 GPM alternatives
- No WiFi connectivity in this specific model
- Indoor-only installation requires venting setup
Good fit if
- You need a propane heater for indoor installation
- You require precise ±1°F temperature adjustments
- You want a non-condensing unit for existing venting
Skip if
- You need more than 7.0 GPM for large families
- You prefer outdoor installation without venting
- You want built-in WiFi remote monitoring
Verdict: Rheem RTG 7.0 GPM Propane Tankless is a solid choice for indoor propane setups needing precise temperature control and high efficiency. It fits homes with moderate simultaneous hot water demand.
Rheem IKONIC 11.2 GPM Propane Tankless Water Heater
Best for: Large homes needing high flow and Wi-Fi
- 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
The Rheem IKONIC RECTGH-SR11iP is a high-output propane tankless water heater designed for indoor installation. It delivers 11.2 GPM of hot water with 199,900 BTUs of heating power. This unit includes built-in recirculation to reduce water waste and features EcoNet Wi-Fi for remote control. Its compact dimensions and ultra-low NOx burner make it suitable for homes needing maximum flow and efficiency.
Pros
- 11.2 GPM flow rate with recirculation
- 199,900 BTU/hr heating capacity
- Built-in EcoNet Wi-Fi connectivity
- Ultra-low NOx burner for efficiency
- Compact 13.7-inch depth
Cons
- Heavier at 86 pounds than competitors
- Indoor installation only without kit
- Higher flow rate increases propane consumption
Good fit if
- You need high flow for multiple bathrooms
- You want remote monitoring via Wi-Fi
- You prioritize energy efficiency and low emissions
Skip if
- You require outdoor installation without a kit
- You have limited space for a heavier unit
- You prefer lower propane usage with smaller flow
Verdict: Rheem IKONIC 11.2 GPM Propane offers superior flow and smart features for large households. It suits buyers who value efficiency and remote control over compact weight.
MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi
Best for: Precise indoor propane heating with app control
- 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
This MIZUDO unit delivers 7.9 GPM at 180,000 BTU/h for indoor propane use. It features WiFi control and maintains temperature stability within ±1°F. The sealed combustion system draws air from outside. It suits households needing steady hot water for multiple fixtures. The compact wall-mounted design saves floor space while providing on-demand heating.
Pros
- 7.9 GPM flow rate for multiple simultaneous draws
- WiFi app control for remote temperature adjustments
- Temperature stability within ±1°F
- Sealed combustion draws air from outside
Cons
- 7.9 GPM is lower than the 9.5 GPM Rheem alternatives
- 2-year unit warranty is shorter than typical industry standards
- Indoor-only installation limits placement options
Good fit if
- You need precise temperature control within ±1°F
- You want to adjust settings via a smartphone app
- You require an indoor propane unit with sealed combustion
Skip if
- You need a flow rate higher than 7.9 GPM
- You prefer a longer than 2-year unit warranty
- You require an outdoor-rated installation model
Verdict: MIZUDO 7.9 GPM Propane Indoor Heater offers precise temperature control and app connectivity. It fits buyers who prioritize WiFi features and steady heat over maximum flow rate.
Specifications side by side
| Spec | Rheem RTGH 9.5 GPM Propane Tankless Heater | Rheem RTG 9.5 GPM Natural Gas Water Heater | Rheem RTGH Series 9.5 GPM Indoor Natural Gas | Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater | Rheem RTG Series 7.0 GPM Propane Tankless Water Heater | Rheem IKONIC 11.2 GPM Propane Tankless Water Heater | MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi |
|---|---|---|---|---|---|---|---|
| Fuel Type | Liquid Propane | Natural Gas | Natural Gas | Liquid Propane | Liquid Propane | Liquid Propane | Propane |
| Flow Rate | 9.5 GPM at 35°F rise | 9.5 GPM | 9.5 GPM at 35°F rise | 9.5 GPM at 35°F rise | 7.0 GPM | 11.2 GPM | 7.9 GPM |
| BTU | 199,900 BTU/hr | 199,900 BTU/hr | 199,900 BTU/hr | 199,900 BTU/hr | 160,000 BTU/hr | 199,900 BTU/hr | 180,000 BTU/h |
| Installation Location | Indoor | Indoor | Indoor | Outdoor | Indoor | Indoor | Indoor |
| Voltage | not stated | not stated | 120 V | not stated | not stated | not stated | 120V AC |
| Temperature Control | not stated | ±1°F | Digital LED, ±1°F | Digital LED, ±1°F | ±1°F | not stated | 95–149°F, ±1°F |
| Certification | not stated | CSA | CSA | CSA | CSA | not stated | CSA |
| Dimensions | 23.7 x 17.7 x 9.8 inches | 24.2 x 13.5 x 10.3 inches | 23.7 x 17.7 x 9.8 inches | 20.8 x 13.5 x 9.4 inches | 24.2 x 13.5 x 10.3 inches | 28.6 x 17.3 x 13.7 inches | 25 x 16.3 x 7.3 in |
| Venting Type | not stated | Non-Condensing | not stated | Non-Condensing | Non-Condensing | not stated | not stated |
| Features | WiFi | WiFi | WiFi | WiFi | WiFi | WiFi | WiFi |
| Material | not stated | not stated | Stainless Steel | not stated | not stated | not stated | not stated |
| Weight | 51.3 pounds | 46.5 pounds | 59.9 pounds | 39.3 pounds | 46.5 pounds | 86 pounds | 39.6 pounds |
| Size | 9.5 GPM (With WiFi) | 9.5 GPM (WiFi) | 9.5 GPM (No WiFi) | 9.5 GPM (Non-WiFi) | 7.0 GPM (No WiFi) | 11.2 GPM (w Recirc) | Propane Gas, 7.9 GPM, 180,000 BTU, Indoor |
| Color | Gray | Gray | Gray | Gray | Gray | Gray | White 7.9P |
| Model | RTGH-95DVELP-3 | RTG-95DVELN-3 | RTGH-95DVLN-3 | RTG-95XLP-3 | RTG-70DVLP-3 | RECTGH-SR11iP | HW180A0W-LP |
Frequently asked questions
What is the highest flow rate available in these alternatives?
The Rheem IKONIC 11.2 GPM Propane model offers the highest flow rate at 11.2 GPM. It includes recirculation capabilities for faster hot water delivery. This unit weighs 86 pounds and measures 28.6 inches in height. It suits large households needing maximum simultaneous hot water output.
Can I install a propane tankless heater outdoors?
Yes, the Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater is designed for outdoor installation. It features a non-condensing venting type suitable for exterior mounting. The unit weighs 39.3 pounds and provides 9.5 GPM of hot water. It is ideal for homeowners with outdoor space.
Do all these models include WiFi connectivity?
Most models include WiFi, but the Rheem RTGH Series 9.5 GPM Indoor Natural Gas does not. The MIZUDO 7.9 GPM and Rheem IKONIC 11.2 GPM models also feature app control. WiFi allows you to monitor and adjust settings remotely from your smartphone.
Which alternative is the lightest for easier mounting?
The Rheem RTG 9.5 GPM Outdoor Propane model is the lightest at 39.3 pounds. The MIZUDO 7.9 GPM Indoor model is also lightweight at 39.6 pounds. These lower weights simplify installation compared to heavier indoor units like the Rheem IKONIC, which weighs 86 pounds.
Are there natural gas options that match the 9.5 GPM flow?
Yes, the Rheem RTG 9.5 GPM Natural Gas and Rheem RTGH Series 9.5 GPM Indoor Natural Gas both provide 9.5 GPM. The RTG model includes WiFi, while the RTGH Series does not. Both are designed for indoor installation in homes with natural gas lines.
What is the smallest flow rate among these choices?
The Rheem RTG Series 7.0 GPM Propane Tankless Water Heater has the lowest flow rate at 7.0 GPM. It is suitable for homes with moderate simultaneous hot water demand. This unit includes WiFi and is designed for indoor propane installation.