Best Rheem Liquid Propane Water Heaters

Finding the right water heater can be an overwhelming task, particularly with a multitude of options available. Homeowners often face confusion over energy efficiency, capacity, and installation requirements. Many end up with a system that doesn’t meet their needs or exceeds their budget.

A great liquid propane water heater should provide consistent hot water, be energy efficient, and fit your household’s specific requirements. Whether you have a large family that requires simultaneous showers or a compact home looking for space-saving solutions, the right water heater is essential.

In this roundup, we’ve reviewed five top Rheem liquid propane water heaters, highlighting their unique features, strengths, and potential drawbacks. By the end, you’ll have a clearer understanding of which model suits your needs best.

Compare the key specifications of our top picks below:

Features	Rheem RTG 7.0 GPM	Rheem RTGH 9.5 GPM	Rheem RTG 8.4 GPM	Rheem RTG 7.0 GPM	Rheem RTGH 6.8 GPM
Install Type	Outdoor	Indoor	Outdoor	Indoor	Indoor
Flow Rate	7.0 GPM	9.5 GPM	8.4 GPM	7.0 GPM	6.8 GPM
BTUs	160,000	199,900	180,000	160,000	120,000
Energy Factor	0.82	0.93	0.82	0.82	0.93
Best For	Large families	Multi-bath homes	Large families	Compact homes	Medium households

Rheem RTG Series 7.0 GPM…

The Rheem RTG Series 7.0 GPM is a top outdoor model designed for residential use, making it an excellent choice for large families with high hot water demands. It’s particularly well-suited for homes with 2-3 bathrooms, ensuring that multiple showers can run simultaneously without running out of hot water.

This heater stands out due to its energy efficiency. With a Uniform Energy Factor (UEF) of 0.82, it saves considerable energy compared to traditional 50-gallon electric tanks, making it a cost-effective option over time. The outdoor installation simplifies venting issues, and the unit also includes advanced safety features for peace of mind.

However, the requirement for professional installation may deter some DIY enthusiasts. Additionally, since it’s designed for outdoor use, you need adequate outdoor space and consideration for climate factors, like freezing temperatures.

• Flow Rate: 7.0 GPM
• BTU Output: 160,000
• Energy Factor: 0.82
• Outdoor installation
• 15-year heat exchanger warranty

Best for: Large families needing reliable hot water for multiple simultaneous showers.

Rheem RTGH Series 9.5 GPM…

The Rheem RTGH Series 9.5 GPM is a high-performance indoor model tailored for larger households. It provides an impressive flow rate of 9.5 gallons per minute, making it ideal for homes with multiple bathrooms where several fixtures may be in use at the same time.

This model’s standout feature is its condensing technology, which offers a UEF of 0.93. This means it operates with ultra-low energy consumption, resulting in lower gas bills compared to standard units. The indoor installation with direct venting keeps it convenient and space-efficient, ensuring it fits seamlessly into your home.

On the downside, the higher BTU output (199,900) may require adequate gas line sizing and pressure considerations, which could lead to additional installation complexities. The upfront cost might be higher than non-condensing models, but the energy savings often justify this investment.

• Flow Rate: 9.5 GPM
• BTU Output: 199,900
• Energy Factor: 0.93
• Indoor installation with direct vent
• Multi-point safety system

Best for: Large families needing high-capacity hot water with energy savings.

Rheem RTG Series 8.4 GPM…

The Rheem RTG Series 8.4 GPM is another robust outdoor option that caters to large households. With its 8.4 GPM flow rate, it comfortably supports 3-4 simultaneous showers, making it a reliable choice for busy families.

This model shines with high energy efficiency, similar to the 7.0 GPM model, featuring a UEF of 0.82. Its outdoor installation eliminates the need for complex venting, providing easy setup while maintaining low energy costs due to its on-demand heating technology.

However, like the other outdoor models, its performance can be affected by extreme weather conditions, and proper winterization must be performed to prevent damage during colder months. Also, some users may find the installation process requires a professional touch.

• Flow Rate: 8.4 GPM
• BTU Output: 180,000
• Energy Factor: 0.82
• Outdoor installation
• 15-year heat exchanger warranty

Best for: Families looking for an efficient outdoor solution for high hot water demand.

Rheem RTG Series 7.0 GPM…

The Rheem RTG Series 7.0 GPM, the indoor variant, offers similar performance to its outdoor counterpart but is designed for indoor installations. This model is ideal for households with moderate hot water needs, supporting 2-3 simultaneous fixtures.

This unit’s energy efficiency also stands out with a UEF of 0.82, saving energy compared to traditional storage tank heaters. With its compact design, it’s perfect for homes with limited installation space, and it frees up floor space by allowing wall mounting.

However, as with the outdoor version, it requires professional installation, which can add to overall costs. Additionally, potential users should ensure proper ventilation in the installation area to avoid safety hazards.

• Flow Rate: 7.0 GPM
• BTU Output: 160,000
• Energy Factor: 0.82
• Indoor installation
• Advanced safety features

Best for: Moderate households with limited space needing reliable hot water.

Rheem RTGH Series 6.8 GPM…

The Rheem RTGH Series 6.8 GPM is tailored for medium-sized households. With a flow rate of 6.8 GPM, this model is suitable for 2-3 simultaneous showers, making it a practical choice for smaller families.

This model features condensing technology, boasting a UEF of 0.93, which translates to lower energy bills and reduced emissions. Its indoor installation allows for efficient use of space, and the built-in safety features ensure reliable operation.

On the downside, its lower BTU output (120,000) may not be sufficient for larger homes with higher hot water demands. Also, proper venting is necessary to ensure performance and compliance with local codes, which might complicate installation.

• Flow Rate: 6.8 GPM
• BTU Output: 120,000
• Energy Factor: 0.93
• Indoor installation
• Multi-point safety system

Best for: Medium-sized households seeking an energy-efficient solution.

How We Chose These Products

We evaluated these Rheem liquid propane water heaters based on their performance specifications, energy efficiency ratings, and suitability for various household sizes. Real-world user feedback played a crucial role in understanding how these models hold up under actual usage conditions.

Additionally, we considered installation requirements, warranty offerings, and safety features. Each product was selected for its ability to meet diverse hot water demands while providing energy savings and reliability.

Buying Guide: What Really Matters

When shopping for a liquid propane water heater, consider the flow rate as a primary factor. This metric indicates how much hot water the unit can deliver per minute, which is crucial for households with multiple bathrooms or fixtures in use simultaneously.

Energy efficiency is another critical aspect. Higher UEF ratings mean lower energy consumption and costs, making condensing models often more appealing despite their higher upfront costs. Lastly, think about the installation type—outdoor vs. indoor—and ensure you have adequate space and venting options for whichever model you choose.

Our Top Recommendation

For those seeking the best balance of performance and efficiency, the Rheem RTGH Series 9.5 GPM stands out. Its high flow rate and superior energy efficiency make it ideal for larger families. For smaller households, the Rheem RTG Series 7.0 GPM offers great performance without the complexities of larger systems.

Frequently Asked Questions

What maintenance is required for these water heaters? Regular maintenance includes checking for leaks, flushing the unit annually to remove sediment, and ensuring proper venting. Consult the user manual for specific guidelines.

Can these units be installed by homeowners? While some experienced DIYers may attempt installation, professional installation is highly recommended to ensure safety and compliance with local codes.

How do I winterize my outdoor water heater? To winterize, turn off the gas supply, drain the unit, and ensure all water is removed to prevent freezing damage. Consult the manual for detailed instructions.

What is the lifespan of Rheem liquid propane heaters? With proper maintenance, these units can last 15 years or more, depending on usage and water quality.

Can I use this unit with hard water? Yes, but consider installing a water softener to reduce mineral buildup, which can affect efficiency and lifespan.

What should I do if the unit doesn’t heat water? Check the gas supply, ensure the unit is receiving power, and consult the troubleshooting section of the manual for specific solutions.