Rheem RTGH Series 9.5 GPM Liquid Propane Tankless Water Heater Alternatives: 6 Similar Picks Compared
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The rheem rtgh series 9 5 gpm liquid propane tankless water heater delivers high output for whole-home use. It provides 9.5 GPM at a 35°F rise with 199,900 BTUs. This unit is designed for indoor installation with direct venting. It features an industry-leading condensing technology and a 0.93 UEF rating. The digital LED control offers precision within ±1°F. Built-in freeze protection and multi-point safety systems add reliability. You get endless hot water for large families or multi-bathroom homes. The unit uses up to 34% less energy than standard electric tanks.
You might look for alternatives if you need outdoor placement or natural gas. Some buyers prefer non-condensing venting for simpler installation. Others may want a smaller footprint or different flow rate. The 6 similar picks compared here share key specifications with the original. We selected these options because their specs overlap with your needs. You can find units with WiFi, recirculation, or different BTU outputs. This list helps you compare features like size, fuel type, and efficiency. Choose the model that fits your home’s specific requirements.
Our top pick: Rheem RTGH 9.5 GPM Propane Tankless Water Heater.
Comparing Similar Propane Models
Rheem RTG 9.5 GPM Natural Gas Water Heater
This Rheem model uses natural gas instead of propane. It maintains the same 9.5 GPM flow rate for whole-home coverage. The unit is non-condensing, which changes its efficiency profile compared to the original’s condensing technology. It shares the indoor installation requirement and includes WiFi connectivity for remote management. The dimensions are slightly narrower at 13.5 inches wide, making it fit tighter spaces. You should choose this if you have a natural gas line but need similar high output and smart features without the condensing complexity.
Rheem RTGH Series 9.5 GPM Indoor Natural Gas
This unit switches from propane to natural gas fuel. It keeps the 9.5 GPM flow rate and indoor direct-vent design. The build uses stainless steel, which may offer different durability characteristics than the original. It includes WiFi features for connectivity. The physical footprint matches the original at 17.7 inches wide. You might prefer this if you have natural gas available and want a robust build with precise digital controls. It delivers the same high capacity for large families but relies on a different fuel source and construction material for long-term use.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater
This model is designed for outdoor installation rather than indoor use. It uses propane and delivers the same 9.5 GPM flow rate. The unit is non-condensing and includes WiFi for remote control. It is lighter at 39.3 pounds and shorter at 20.8 inches high. You should pick this if you have outdoor space and want to avoid indoor venting requirements. It offers the same high output for whole-home demand but requires exterior placement. The non-condensing design changes its efficiency compared to the original indoor condensing unit.
Rheem RTG Series 7.0 GPM Propane Tankless Water Heater
This Rheem unit provides a lower flow rate of 7.0 GPM compared to the original’s 9.5 GPM. It uses propane and is designed for indoor installation. It includes WiFi connectivity for smart management. The unit is non-condensing and weighs 46.5 pounds. You should choose this for smaller homes where 7.0 GPM is sufficient. It offers precise temperature control and indoor durability. It gives up high flow capacity for a more compact solution. It is a solid choice if you do not need the maximum output of the original 9.5 GPM model.
Rheem IKONIC 11.2 GPM Propane Tankless Water Heater
This Rheem IKONIC model offers a higher flow rate of 11.2 GPM. It uses propane and is designed for indoor installation. It includes WiFi and recirculation features for enhanced convenience. The unit is larger at 28.6 inches high and weighs 86 pounds. You should pick this if you need substantial hot water capacity for very large households. It provides greater flow than the original but requires more space. It prioritizes high output and remote management over compact placement. It is ideal for homes with high simultaneous demand.
MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi
The MIZUDO unit provides 7.9 GPM at 180,000 BTUs. It uses propane and is designed for indoor installation. It includes WiFi for smart control. The unit is lighter at 39.6 pounds and wider at 16.3 inches. You should choose this if you want smart connectivity and steady output without the highest flow capacity. It offers precise temperature control for indoor propane use. It gives up some flow rate compared to the original but provides a compact alternative. It suits households that prioritize WiFi management over maximum hot water volume.
Quick picks
Our 7 picks
Rheem RTGH 9.5 GPM Propane Tankless Water Heater
Best for: Large indoor homes with propane
- 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 indoor unit delivers 9.5 GPM at a 35°F rise using 199,900 BTUs of liquid propane. It features industry-leading condensing technology with a 0.93 UEF rating. The digital LED control offers ±1°F precision. It includes built-in freeze protection and multi-point safety systems. This model suits large families needing whole-house hot water.
Pros
- 9.5 GPM flow rate for simultaneous showers
- 0.93 Uniform Energy Factor for efficiency
- ±1°F digital temperature precision
- Indoor direct vent installation
- 15-year heat exchanger warranty
Cons
- Indoor-only installation requires venting
- Heavier build at 59.9 pounds
- Professional installation recommended
Good fit if
- You need high flow for multiple bathrooms
- You have indoor propane supply
- You want high energy efficiency
Skip if
- You require outdoor installation
- You prefer natural gas fuel
- You need self-installation
Verdict: Rheem RTGH 9.5 GPM Propane is ideal for large households with indoor propane access. Its high flow and efficiency make it a top pick for whole-home demand.
Rheem RTG 9.5 GPM Natural Gas Water Heater
Best for: Whole-house natural gas hot water
- 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 model delivers 9.5 GPM of hot water using natural gas. It features a 199,900 BTU output and indoor installation. The unit includes WiFi connectivity for remote control. You get precise temperature adjustments within ±1°F. It is designed for whole-house use with multiple simultaneous showers. The non-condensing design requires specific venting. This heater suits large families needing high flow rates.
Pros
- 9.5 GPM flow rate for whole-house use
- 199,900 BTU/hr heating capacity
- WiFi enabled for remote monitoring
- ±1°F temperature precision
- Indoor installation capability
Cons
- Indoor installation requires complex venting
- Non-condensing design is less efficient than condensing models
- Larger physical footprint than compact units
Good fit if
- You need high flow for multiple bathrooms
- You have indoor space for venting
- You want remote WiFi control
Skip if
- You require outdoor installation
- You use liquid propane instead of natural gas
- You need a compact wall-mount unit
Verdict: Rheem RTG 9.5 GPM Natural Gas Indoor is a high-output choice for whole-house hot water needs. It fits homes with natural gas lines and indoor venting space. You get reliable performance with smart connectivity.
Rheem RTGH Series 9.5 GPM Indoor Natural Gas
Best for: large families needing high indoor flow
- 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 unit delivers 9.5 GPM at a 35°F rise using natural gas. It features a 199,900 BTU/hr burner and a 0.93 UEF rating. The stainless steel heat exchanger supports indoor installation with direct venting. Digital LED controls maintain temperature within ±1°F. It suits large families needing high flow for multiple simultaneous showers.
Pros
- 9.5 GPM flow rate for whole-house use
- 0.93 Uniform Energy Factor for efficiency
- Stainless steel construction for durability
- Digital LED control with ±1°F precision
Cons
- Indoor installation only
- Heavier at 59.9 pounds
- Lacks WiFi connectivity
Good fit if
- You need high flow for large families
- You prefer indoor direct-vent installation
- You want precise digital temperature control
Skip if
- You require outdoor installation
- You need WiFi remote control
- You use liquid propane fuel
Verdict: Rheem RTGH 9.5 GPM Natural Gas is a high-efficiency indoor unit for large households. Its stainless steel build and precise digital controls suit buyers prioritizing durability and temperature stability over smart features.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater
Best for: Outdoor whole-house propane needs
- 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 features a 199,900 BTU output and a 0.82 UEF rating. The metal cabinet allows wall mounting without venting. You get digital LED control with ±1°F precision. It includes built-in freeze and flame failure protection. This model suits whole-house residential use for large families.
Pros
- 9.5 GPM flow rate supports 3-4 simultaneous showers
- 0.82 UEF rating saves energy compared to tank heaters
- Outdoor installation eliminates the need for venting
- Digital LED panel offers ±1°F temperature adjustments
Cons
- Requires professional installation
- Lacks WiFi connectivity in the Non-WiFi variant
- Outdoor only; not suitable for indoor mounting
Good fit if
- You need an outdoor propane water heater
- You want 9.5 GPM for whole-house use
- You prefer a non-condensing unit without venting
Skip if
- You require indoor installation
- You need WiFi remote control
- You use natural gas instead of propane
Verdict: Rheem RTG 9.5 GPM Outdoor Propane is a high-output outdoor unit for homes needing 9.5 GPM. It fits buyers who want propane power without venting constraints.
Rheem RTG Series 7.0 GPM Propane Tankless Water Heater
Best for: Small homes needing efficient indoor propane heating
- 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
This Rheem RTG Series unit delivers 7.0 GPM of hot water using liquid propane. It features 160,000 BTU/hr output and a 0.82 UEF rating. The digital LED panel allows ±1°F precision. It is designed for indoor installation with direct venting. You get consistent temperature control for whole-house use. The compact wall-mount design saves floor space.
Pros
- 7.0 GPM flow rate for 2-3 simultaneous showers
- 0.82 Uniform Energy Factor (UEF) efficiency
- Digital LED control with ±1°F precision
- Built-in freeze and flame failure protection
Cons
- Lower 7.0 GPM capacity compared to 9.5 GPM competitors
- Indoor-only installation requirement
- No WiFi connectivity in this specific 7.0 GPM model
Good fit if
- You need a reliable propane heater for a smaller household
- You have existing indoor direct venting infrastructure
- You prioritize precision temperature control over smart features
Skip if
- You require outdoor installation capabilities
- You need higher flow rates for large multi-bathroom homes
- You want built-in WiFi monitoring and control
Verdict: Rheem RTG 7.0 GPM Propane Tankless is a solid choice for smaller homes needing efficient propane heating. It fits buyers who value precision temperature control and indoor durability over high flow rates or smart connectivity.
Rheem IKONIC 11.2 GPM Propane Tankless Water Heater
Best for: Large indoor propane homes 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
The Rheem IKONIC RECTGH-SR11iP is a high-output indoor tankless water heater running on liquid propane. It delivers 11.2 GPM with recirculation and 199,900 BTUs of heating power. This unit includes built-in EcoNet Wi-Fi for remote control and energy tracking. Its compact design allows for flexible installation with minimal side clearance. It suits large households needing simultaneous hot water for multiple fixtures.
Pros
- 11.2 GPM flow rate with recirculation
- 199,900 BTU/hr heating capacity
- Built-in EcoNet Wi-Fi connectivity
- Compact 17.3-inch width
- Ultra-low NOx burner
Cons
- Indoor installation only
- Heavier at 86 pounds
- Higher flow rate may exceed small home needs
Good fit if
- You need high flow for multiple bathrooms
- You want remote monitoring via Wi-Fi
- You have indoor propane access
Skip if
- You require outdoor installation
- You have limited wall space for weight
- You prefer natural gas over propane
Verdict: Rheem IKONIC 11.2 GPM Propane offers substantial hot water capacity and smart features for large indoor propane setups. It fits homes prioritizing flow rate and remote management over compact outdoor placement.
MIZUDO 7.9 GPM Indoor Propane Tankless Heater with WiFi
Best for: indoor propane homes needing smart 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 indoor propane unit delivers 7.9 GPM at 180,000 BTU. It uses WiFi for remote temperature control and maintains stability within ±1°F. The sealed combustion system draws air from outside, making it safe for interior installation. You get steady hot water for 3-5 draw points. The copper heat exchanger ensures efficient heat transfer. This model fits homes needing moderate flow with smart connectivity.
Pros
- 7.9 GPM flow rate supports multiple simultaneous fixtures
- WiFi app control for remote temperature adjustments
- Temperature stability within ±1°F via self-modulating gas control
- Sealed combustion system for safe indoor use
Cons
- 7.9 GPM is lower than the 9.5 GPM options on this list
- 2-year unit warranty is shorter than the 5-year heat exchanger coverage
- Indoor-only installation limits outdoor placement flexibility
Good fit if
- You need WiFi control for remote monitoring
- You are installing in an indoor location with direct-vent capability
- You want stable temperature control within ±1°F
Skip if
- You require 9.5 GPM or higher flow rates
- You need an outdoor-rated unit for exterior mounting
- You prefer natural gas over propane fuel
Verdict: MIZUDO 7.9 GPM Propane Indoor Tankless Heater offers precise temperature control and smart connectivity for indoor propane users. It suits households that prioritize WiFi management and steady output over maximum flow capacity.
Specifications side by side
| Spec | Rheem RTGH 9.5 GPM Propane Tankless Water 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 | 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 | ±1°F | ±1°F | Digital LED, ±1°F | Digital LED, ±1°F | ±1°F | not stated | 95–149°F, ±1°F |
| Certification | CSA | 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 | 59.9 pounds | 46.5 pounds | 59.9 pounds | 39.3 pounds | 46.5 pounds | 86 pounds | 39.6 pounds |
| Size | 9.5 GPM (Without 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-95DVLP-3 | RTG-95DVELN-3 | RTGH-95DVLN-3 | RTG-95XLP-3 | RTG-70DVLP-3 | RECTGH-SR11iP | HW180A0W-LP |
If you also run outdoor equipment, specifications for the best propane patio heaters show heat coverage and tank runtime.
Frequently asked questions
Can I install the Rheem RTGH 9.5 GPM propane unit outdoors?
No, this specific model is designed for indoor installation only. The product data lists the installation location as indoor. You must place it where direct venting is possible. Outdoor models like the RTG series handle weather exposure, but the RTGH requires a protected environment to function correctly and safely.
Does the Rheem RTGH 9.5 GPM propane heater have WiFi?
Yes, the Rheem RTGH 9.5 GPM propane unit includes WiFi connectivity. This feature allows you to monitor and control the heater remotely via a smartphone app. You can adjust settings and check status from anywhere. Smart connectivity is a standard feature on this high-output indoor propane model.
What are the dimensions of the Rheem RTGH 9.5 GPM propane tankless water heater?
The unit measures 17.7 inches in width, 23.7 inches in height, and 9.8 inches in length. It weighs 59.9 pounds. These dimensions are important for ensuring you have enough clearance for installation and maintenance. The compact footprint fits well in typical utility spaces or closets with proper ventilation.
How does the Rheem RTGH 9.5 GPM propane compare to the natural gas version?
Both models deliver a 9.5 GPM flow rate for whole-home coverage. The propane version uses liquid propane fuel, while the natural gas version uses piped gas. They share similar indoor installation requirements and WiFi features. The propane unit is ideal if you do not have a natural gas line available.
Is the Rheem RTGH 9.5 GPM propane unit condensing or non-condensing?
The Rheem RTGH 9.5 GPM propane model uses condensing technology. This design captures heat from exhaust gases, improving overall efficiency compared to non-condensing units. Non-condensing models, like the outdoor RTG series, vent heat directly. The condensing design helps reduce energy waste while providing consistent hot water for large households.
What is the difference between the Rheem RTGH 9.5 GPM and the IKONIC 11.2 GPM?
The IKONIC model offers a higher flow rate of 11.2 GPM, compared to the 9.5 GPM of the RTGH. The IKONIC is larger, measuring 28.6 inches in height and weighing 86 pounds. Both are indoor propane units with WiFi. The IKONIC suits homes with very high simultaneous hot water demands.
Can I use the Rheem RTGH 9.5 GPM propane heater with a recirculation pump?
The standard RTGH 9.5 GPM model does not include built-in recirculation. However, you can add an external recirculation pump to reduce wait times for hot water. Some higher-capacity models like the IKONIC 11.2 GPM include recirculation capabilities. Check your specific plumbing setup to determine if an external pump is needed.