Rheem RTG Series 9.5 GPM Natural Gas Tankless Water Heater or Rheem RTG Series 9.5 GPM Liquid Propane Tankless Water Heater? Which Rheem Model to Buy
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You are comparing the Rheem RTG Series 9.5 GPM Natural Gas Tankless Water Heater against the RTG Series 9.5 GPM Liquid Propane model. Both units deliver 9.5 GPM at a 35°F rise and share a 0.82 UEF rating. They both feature digital LED controls with ±1°F precision and built-in safety protections. The main difference lies in fuel type and installation location. One uses natural gas for indoor use, while the other uses liquid propane for outdoor mounting.
Key differences
| Aspect | Rheem RTG 9.5 GPM Natural Gas Water Heater | Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater |
|---|---|---|
| Fuel Type | Natural Gas | Liquid Propane |
| Installation Location | Indoor | Outdoor |
| Venting Type | Direct Vent (Non-Condensing) | No Venting Required |
| Dimensions | 24.2 x 13.5 x 10.3 inches | 20.8 x 13.5 x 9.4 inches |
| Weight | 46.5 pounds | 39.3 pounds |
| Connectivity | WiFi Enabled | WiFi Enabled |
Which one should you choose?
Choose Rheem RTG 9.5 GPM Natural Gas Water Heater if
- You have a natural gas supply and need an indoor unit.
- You want to mount the heater inside a utility room or garage.
- You prefer a slightly larger capacity unit with direct venting.
Choose Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater if
- You use liquid propane fuel for your home.
- You need an outdoor unit that requires no venting.
- You want a lighter, more compact unit for exterior mounting.
Verdict: Choose the Natural Gas model if you are installing indoors and have a gas line available. Pick the Liquid Propane model if you need an outdoor solution without venting complexity. Both provide identical flow rates and efficiency for whole-house demand.
Gas vs Propane RTG 9.5 Comparison
Fuel Type
Product A uses Natural Gas, while Product B runs on Liquid Propane. This is the primary difference between the two models. Your local fuel availability will dictate which unit you can actually install. Natural Gas lines are common in urban areas, whereas Propane is often used in rural locations without pipeline access. Both fuels provide the same 199,900 BTU/hr output, so heating performance remains identical regardless of the fuel source. You must ensure your home has the correct gas supply infrastructure for your chosen model.
Installation Location
Product A is designed for Indoor installation only, requiring a direct vent system to exhaust combustion gases safely. Product B is built for Outdoor installation, which eliminates the need for complex venting through walls or roofs. The outdoor model features a durable metal cabinet to withstand weather elements. If you have limited interior space or difficult venting paths, the outdoor unit offers a simpler setup. However, indoor units keep the equipment protected from the elements, potentially extending component life in harsh climates.
Smart Features
Product A includes WiFi connectivity, allowing you to monitor and control the heater remotely via a smartphone app. Product B is listed as Non-WiFi in its specific variation details, lacking this digital integration. The WiFi feature on Product A provides convenience for adjusting temperatures or checking status from anywhere. If remote management and smart home integration are important to you, Product A is the superior choice. Product B focuses on core heating functions without digital extras.
Physical Dimensions
Product A measures 24.2 inches in height, 13.5 inches in width, and 10.3 inches in length, weighing 46.5 pounds. Product B is more compact, standing 20.8 inches high, 13.5 inches wide, and 9.4 inches deep, with a weight of 39.3 pounds. The outdoor model is shorter and lighter, making it easier to handle during installation. The indoor unit is taller, which may affect clearance requirements if you are replacing an existing tank heater. Consider your mounting space carefully when choosing between these two footprints.
Flow Rate
Both Product A and Product B deliver 9.5 GPM at a 35°F temperature rise. This capacity supports 3 to 4 simultaneous showers for whole-house residential use. The flow rate is identical, meaning neither model provides more hot water volume than the other under standard conditions. This high flow rate makes both units suitable for large families or multi-bathroom homes. Your actual hot water availability will depend on your incoming water temperature, but both heaters are engineered to meet high demand equally well.
Which Rheem RTG 9.5 Model Fits You
Homeowner with natural gas line and indoor space
You need a unit that connects to your existing natural gas infrastructure. This model is designed for indoor installation, requiring a direct vent system. It includes WiFi capabilities for remote monitoring. The dimensions are 24.2 by 13.5 by 10.3 inches. This fits standard indoor utility spaces while providing consistent hot water flow for your household needs.
User with propane supply and outdoor mounting option
Your home uses liquid propane as the primary fuel source. This model is built for outdoor installation, which eliminates the need for complex indoor venting. It is more compact, measuring 20.8 by 13.5 by 9.4 inches. The smaller footprint and lighter weight make it easier to mount on an exterior wall. It delivers the same high flow rate as the natural gas version.
Buyer seeking WiFi connectivity for remote control
You want to monitor and adjust your water heater settings from your phone. This specific natural gas model includes built-in WiFi features. The outdoor propane version listed here does not highlight WiFi in its primary specs. If smart home integration is a priority, this indoor unit allows you to check temperatures and status remotely via the digital LED interface.
The products compared
Rheem RTG 9.5 GPM Natural Gas Water Heater
Best for: Large indoor homes needing high flow and WiFi
- 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 a 0.82 UEF rating. The indoor design includes WiFi connectivity and precise ±1°F digital temperature control. It suits homes needing high flow for multiple bathrooms. The compact wall-mount form saves floor space while providing endless hot water on demand.
Pros
- 9.5 GPM flow rate supports 3-4 simultaneous showers
- 199,900 BTU/hr high-efficiency gas output
- WiFi enabled for remote monitoring
- Precise ±1°F digital temperature control
- 0.82 UEF energy efficiency rating
Cons
- Indoor installation only, not suitable for outdoors
- Requires professional installation for gas connection
- Non-condensing venting limits placement options
Good fit if
- You need high flow for 3-4 bathrooms
- You want WiFi connectivity for monitoring
- You have indoor gas line access
Skip if
- You require outdoor installation
- You prefer propane fuel type
- You want a standard non-WiFi model
Verdict: Rheem RTG 9.5 GPM Natural Gas Indoor is ideal for large households with indoor gas lines who need high flow and smart features. It fits homes with 3-4 bathrooms needing simultaneous hot water.
Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater
Best for: outdoor propane homes with high hot water 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 Rheem RTG Series unit delivers 9.5 GPM at a 35°F rise using liquid propane. It features 199,900 BTU output and a 0.82 UEF. The digital LED panel allows ±1°F precision. Designed for outdoor use, it requires no venting. It suits homes needing high flow for multiple showers. The compact 20.8-inch height fits wall mounts easily.
Pros
- 9.5 GPM flow rate supports 3-4 simultaneous showers
- 199,900 BTU/hr high output for rapid heating
- Digital LED control with ±1°F temperature precision
- 0.82 UEF efficiency rating saves energy
- Outdoor design eliminates complex venting requirements
Cons
- Outdoor installation only, not suitable for indoor use
- Requires liquid propane fuel, not natural gas
- Professional installation is mandatory for safety
Good fit if
- You have a propane supply line available
- You need high flow for multiple bathrooms
- You have an exterior wall for mounting
Skip if
- You require indoor installation
- You use natural gas instead of propane
- You prefer DIY setup without a pro
Verdict: Rheem RTG 9.5 GPM Propane Outdoor Unit provides strong flow for large households with propane. It fits homes with exterior walls needing high-capacity hot water. Skip it if you need indoor placement or natural gas compatibility.
Specifications side by side
| Spec | Rheem RTG 9.5 GPM Natural Gas Water Heater | Rheem RTG 9.5 GPM Outdoor Propane Tankless Heater |
|---|---|---|
| Fuel Type | Natural Gas | Liquid Propane |
| Flow Rate | 9.5 GPM | 9.5 GPM at 35°F rise |
| BTU | 199,900 BTU/hr | 199,900 BTU/hr |
| Installation Location | Indoor | Outdoor |
| Temperature Control | ±1°F | Digital LED, ±1°F |
| Certification | CSA | CSA |
| Dimensions | 24.2 x 13.5 x 10.3 inches | 20.8 x 13.5 x 9.4 inches |
| Venting Type | Non-Condensing | Non-Condensing |
| Features | WiFi | WiFi |
| Weight | 46.5 pounds | 39.3 pounds |
| Size | 9.5 GPM (WiFi) | 9.5 GPM (Non-WiFi) |
| Color | Gray | Gray |
| Model | RTG-95DVELN-3 | RTG-95XLP-3 |
Frequently asked questions
Can I install the natural gas Rheem RTG 9.5 inside my home?
Yes, the natural gas model is designed for indoor installation. It uses a non-condensing venting system, which requires specific exterior venting. You must ensure your home has the necessary gas lines and ventilation space for this indoor unit to operate safely and efficiently.
Does the propane Rheem RTG 9.5 work outdoors?
Yes, the propane model is built for outdoor placement. It features a non-condensing design suitable for exterior walls. You should skip this unit if you need indoor placement, as it is not rated for interior environments. Ensure you have a propane supply line available.
Do both Rheem RTG 9.5 models offer WiFi connectivity?
Yes, both the natural gas and propane models include WiFi features. This allows you to monitor and control the water heater remotely via a smartphone app. You can adjust settings and check status from anywhere, providing convenient management for your hot water system.
What is the flow rate for these Rheem RTG 9.5 heaters?
Both units deliver a flow rate of 9.5 GPM. This capacity supports simultaneous hot water use in larger households with multiple bathrooms. You can expect consistent performance for showers and sinks, provided your home’s gas or propane supply meets the required pressure specifications.
How do the dimensions of the natural gas and propane units compare?
The natural gas model is slightly taller and heavier. It measures 24.2 inches in height and weighs 46.5 pounds. The propane unit is shorter at 20.8 inches and weighs 39.3 pounds. Both share a similar width of 13.5 inches, fitting standard wall spaces.
Which model is better for a large home with four bathrooms?
The natural gas indoor model is ideal for large homes needing high flow. It fits households with three to four bathrooms requiring simultaneous hot water. Its WiFi capabilities add smart control, making it a strong choice for families prioritizing capacity and modern features.