Rinnai RUS65EP Tankless Hot Water Review: Specs, Pros and Cons
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This rinnai rus65ep tankless hot water review covers a propane-powered unit built for outdoor placement. It delivers a maximum flow rate of 6.5 GPM, allowing you to run multiple fixtures simultaneously. The compact design measures 35 x 14.5 x 22 inches and weighs 63 pounds. You get endless hot water without the bulk of a traditional tank. This model is designed to heat water only when you need it, which saves space and energy. It supports flexible venting options, including PVC or CPVC with the proper adaptor. The unit is strictly for outdoor installation, keeping it out of your living space while providing reliable performance for your home.
What stands out
- 6.5 GPM flow rate for simultaneous appliance use
- Propane fuel type for outdoor efficiency
- Compact outdoor dimensions: 35 x 14.5 x 22 inches
- Flexible venting options including PVC/CPVC
Who it fits
Good fit for
This unit suits homeowners with outdoor utility spaces who need high flow rates. The 6.5 GPM capacity serves up to five appliances at once, making it ideal for large families. If you already have propane lines and need a durable, space-saving solution, this fits well. The outdoor installation requirement means it is not for interior closets. You should have a qualified technician install it to ensure proper gas and venting connections. It is best for those who want reliable, continuous hot water without tank maintenance.
Who should skip it
Look elsewhere if you need indoor installation. This model is designed exclusively for outdoor use and lacks the weatherproofing for interior spaces. It also requires propane fuel, so natural gas users must choose a different variant from the Rinnai lineup. If you cannot find a qualified technician for professional installation, do not attempt this yourself. The outdoor location may not suit all home layouts. Additionally, if you need lower flow rates, this unit may be overkill for your specific needs.
Verdict: The Rinnai RUS65EP is a robust outdoor propane heater for homes needing high flow rates. It delivers consistent performance for multiple simultaneous uses when installed correctly by a professional.
Rinnai RUS65EP Key Specs
Flow Rate: 6.5 GPM
This unit delivers up to 6.5 gallons of hot water per minute. This capacity allows you to run multiple fixtures, such as a shower and a kitchen sink, at the same time without significant pressure drops. If your household has three or more bathrooms, this flow rate supports simultaneous use. Compare this to lower-capacity models that may struggle with high demand.
Fuel Type: Propane
This heater runs on propane gas rather than natural gas or electricity. You need access to a propane tank supply for this unit to function. Propane heaters often perform well in colder climates because the fuel burns hotter. Verify your existing fuel infrastructure before purchasing, as switching fuel types requires different plumbing and venting setups.
Installation Location: Outdoor
This model is designed specifically for exterior mounting. You must install it in a location protected from direct weather exposure but accessible for maintenance. Indoor installation is not recommended for this specific configuration. Ensure you have an exterior wall with proper clearance. This placement saves indoor space and simplifies venting requirements for many homes.
Dimensions: 35 x 14.5 x 22 inches
The physical footprint measures 35 inches in height, 14.5 inches in width, and 22 inches in depth. This compact size fits in tight outdoor corners or utility areas. Measure your intended installation space carefully to ensure clearance for service access. The vertical orientation helps it blend into exterior walls without taking up excessive horizontal ground space.
Weight: 63 pounds
The unit weighs 63 pounds, which is standard for propane tankless heaters. You need a sturdy mounting surface capable of supporting this weight. Two people are typically required for safe installation. Ensure the wall brackets are anchored into structural studs. This weight ensures durability but requires proper handling during the mounting process to avoid damage.
Design and Build Overview
The Rinnai RUS65EP is engineered for outdoor installation, a choice that dictates its physical construction. According to the listing, the unit features a weather-resistant exterior suitable for permanent outdoor placement. This design allows you to mount the heater on an exterior wall without requiring indoor venting infrastructure. The compact footprint measures 35 inches in height, 14.5 inches in width, and 22 inches in depth. These dimensions enable flexible placement in tight spaces, such as alongside a foundation or in a utility area. The unit weighs 63 pounds, providing stability during operation while remaining manageable for professional installation.
The layout prioritizes durability and serviceability. As a propane-powered model, it utilizes specific venting requirements distinct from natural gas units. The exterior finish is designed to withstand environmental exposure, ensuring long-term reliability. The control interface is integrated into the main body, allowing you to adjust settings directly on the unit. This straightforward design reduces potential points of failure compared to complex digital interfaces. The robust build supports its role as a primary or secondary water heating source. You benefit from a system that combines space efficiency with consistent performance. The outdoor orientation also simplifies maintenance access for qualified technicians. This practical design ensures the unit fits seamlessly into your home’s infrastructure without compromising on space or aesthetic integration.
Setup And Everyday Use
Setup begins with professional installation. Rinnai explicitly recommends using a qualified technician to ensure safety and proper configuration. You should not attempt to install this unit yourself. The listing advises visiting the Find a Rinnai PRO page to locate a certified installer in your area. This step is critical for handling propane connections and venting requirements.
The unit is designed for outdoor placement only. This location choice simplifies venting options. You can use flexible venting methods, including PVC or CPVC piping. The listing notes that a Ubbink Concentric to Twin Pipe adaptor may be used for certain configurations. This flexibility allows you to position the heater near exterior walls without complex chimney requirements. The compact dimensions of 35 x 14.5 x 22 inches help it fit into tight outdoor spaces.
Daily use centers on consistent hot water delivery. With a flow rate of 6.5 GPM, the system supports up to five appliances simultaneously. You can run a shower, kitchen sink, and bathroom faucet at the same time without noticeable pressure drops. The propane fuel source heats water only when you turn on a tap. This on-demand operation conserves energy by eliminating standby heat loss. The unit remains dormant until hot water is needed. This design ensures you always have access to hot water without waiting for a tank to refill. The durable construction supports this continuous operation. You benefit from a reliable supply of hot water throughout your home, backed by a 12-year warranty on the heat exchanger.
Key Considerations Before Buying
Before you purchase the Rinnai RUS65EP, verify your propane supply lines match its inlet requirements. This unit is strictly for outdoor installation, so ensure the mounting location is accessible for service and protected from extreme debris. You will need professional installation, as the manufacturer does not recommend DIY setups. Check local codes for venting options, noting that flexible placement allows for PVC or CPVC use with the proper adaptor. Compare this 6.5 GPM model against the 1 other options on the page. If you require higher flow for larger households, consider the 7.5 GPM variant. Regular maintenance includes flushing the heat exchanger to prevent mineral buildup, which preserves efficiency. This propane model suits homes with existing gas lines and outdoor space. It offers endless hot water for up to five appliances simultaneously. Ensure your electrical outlet is available for ignition and control systems. Proper spacing around the unit is essential for airflow and safety compliance during operation.
Check before you buy
- Confirm outdoor mounting space and clearance requirements.
- Verify propane line compatibility with inlet specs.
- Schedule professional installation with a certified technician.
- Check local venting codes for PVC or CPVC.
The product at a glance
Rinnai Outdoor Propane Tankless Water Heater
Best for: outdoor propane homes needing 6.5 GPM
- Fuel Type
- Propane
- Flow Rate
- 6.5 GPM
- Installation Location
- Outdoor
- Dimensions
- 35 x 14.5 x 22 in
- Weight
- 63 pounds
View on Amazon: Rinnai Outdoor Propane Tankless Water Heater Affiliate link
The Rinnai RUS65EP is an outdoor propane tankless water heater designed for continuous hot water. It delivers up to 6.5 GPM, serving five appliances at once. Its compact 35 by 14.5 by 22-inch frame fits tight spaces. The unit weighs 63 pounds and requires professional installation. It offers flexible venting options, including PVC or CPVC pipes. This model suits homes needing reliable outdoor heating.
Pros
- Delivers up to 6.5 GPM flow rate
- Serves up to five appliances simultaneously
- Compact dimensions of 35 x 14.5 x 22 inches
- Flexible venting with PVC or CPVC options
Cons
- Requires professional installation only
- Limited to outdoor placement
- Labor warranty is only 1 year
Good fit if
- You need an outdoor propane water heater
- You want to serve five fixtures at once
- You have space for a 63-pound unit
Skip if
- You require indoor installation
- You prefer natural gas fuel
- You want to install it yourself
Verdict: Rinnai 6.5 GPM Propane Outdoor Unit provides steady hot water for multiple outlets. It fits outdoor spaces where propane is available and professional setup is possible.
Specifications side by side
| Spec | Rinnai Outdoor Propane Tankless Water Heater |
|---|---|
| Fuel Type | Propane |
| Flow Rate | 6.5 GPM |
| Installation Location | Outdoor |
| Dimensions | 35 x 14.5 x 22 in |
| Weight | 63 pounds |
| Size | 6.5 GPM |
| Color | Outdoor Installation |
| Model | RUS65EP |
Frequently asked questions
Can I install the Rinnai RUS65EP indoors?
No, this unit is designed strictly for outdoor placement. The manufacturer specifies it as an outdoor propane tankless water heater. Installing it indoors could create safety hazards due to ventilation and weatherproofing requirements. You must mount it in an exterior location that allows for proper airflow and access.
What is the flow rate of this model?
The Rinnai RUS65EP provides a maximum flow rate of 6.5 gallons per minute. This capacity allows you to run multiple fixtures, such as a shower and a kitchen sink, simultaneously. The steady output helps maintain consistent water temperature and pressure during peak usage times in your home.
How much space does the heater take up?
The unit measures 35 inches in height, 22 inches in length, and 14.5 inches in width. It weighs 63 pounds, so you need a sturdy mounting surface. Its compact footprint makes it suitable for tight outdoor spaces, such as side yards or utility areas, without overwhelming the area.
Do I need a professional to install it?
Yes, professional installation is required for this propane unit. Rinnai explicitly recommends using a qualified technician to ensure safety and proper configuration. You should not attempt to install this unit yourself. Visit the Find a Rinnai PRO page to locate a certified installer in your local area.
Is this heater compatible with natural gas?
No, the Rinnai RUS65EP runs exclusively on propane. The product data identifies it as a propane-powered unit. You must ensure your propane supply lines match its inlet requirements before purchase. It is not designed to operate on natural gas or other fuel types.
What is the model number for this outdoor unit?
The model number is RUS65EP. This identifier corresponds to the Rinnai Outdoor Propane Tankless Water Heater. Use this number when ordering parts or consulting technical manuals. It distinguishes this specific 6.5 GPM outdoor model from other indoor or residential units in the Rinnai product line.
Can this heater support multiple bathrooms at once?
With a 6.5 GPM output, it can support multiple outlets. You can run a shower and a kitchen sink at the same time without significant pressure drops. This makes it suitable for homes with moderate simultaneous hot water demand, provided the incoming water temperature is within operational limits.