Rinnai RX199iN Condensing Smart Sense Tankless Water Heater vs Rinnai CXP160iN SENSEI CXP Commercial Tankless Water Heater: Spec Comparison
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This comparison looks at the Rinnai RX199iN condensing smart sense tankless water heater versus the Rinnai CXP160iN SENSEI CXP. Both units offer dual-fuel flexibility and indoor or outdoor installation. They share similar dimensions and venting styles. The main difference lies in their capacity and intended use. One model provides higher flow for residential needs, while the other includes a built-in recirculation pump for commercial efficiency.
Key differences
| Aspect | Rinnai 11.1 GPM Condensing Dual-Fuel Water Heater | Rinnai 9 GPM Dual-Fuel Tankless Water Heater |
|---|---|---|
| Flow Rate | 11.1 GPM | 9 GPM |
| Use | Residential | Commercial |
| Recirculation Pump | Not listed | Internal Smart-Circ pump |
| Energy Efficiency (UEF) | .98 | .97 |
| Weight | 55 pounds | 60 pounds |
Which one should you choose?
Choose Rinnai 11.1 GPM Condensing Dual-Fuel Water Heater if
- You need the highest flow rate for multiple simultaneous fixtures in a home.
- You prefer a slightly lighter unit for easier mounting.
- You want the highest listed energy efficiency factor.
Choose Rinnai 9 GPM Dual-Fuel Tankless Water Heater if
- You require a unit rated for commercial applications.
- You want built-in intelligent recirculation to learn usage patterns.
- You need a heat exchanger warranty with a higher hour limit.
Verdict: Choose the RX199iN if you prioritize maximum flow capacity for a large residential home. Select the CXP160iN if you are installing in a commercial setting or value the integrated smart recirculation pump. Both models share robust construction and dual-fuel capabilities.
RX199iN vs CXP160iN Spec Showdown
Flow Rate Capacity
The Rinnai RX199iN delivers a maximum flow rate of 11.1 GPM. This higher output supports up to seven fixtures running simultaneously. The Rinnai CXP160iN provides 9 GPM, which handles six fixtures at once. If your household requires more simultaneous hot water usage, the RX199iN offers greater capacity. The CXP160iN remains sufficient for standard commercial or large residential needs. Choose the RX199iN for peak volume demands.
Heating Power
The Rinnai CXP160iN is rated at 160,000 BTU. This high input supports its commercial-grade performance and recirculation features. The Rinnai RX199iN does not list a specific BTU rating in the provided data. Both units are condensing models with high efficiency factors. The CXP160iN’s specified power output indicates robust heating capability for demanding applications. The RX199iN focuses on residential-style flow rates. The CXP160iN has the edge in stated heating power.
Recirculation Technology
The Rinnai CXP160iN includes Smart-Circ Intelligent Recirculation with an internal pump. This feature learns usage patterns and schedules pumping for efficiency. The Rinnai RX199iN does not mention an internal pump or Smart-Circ technology in the data. The RX199iN relies on standard condensing efficiency with a UEF of .98. If you need automated hot water recirculation without external hardware, the CXP160iN is the clear choice. The RX199iN lacks this specific integrated feature.
Intended Use
The Rinnai CXP160iN is designated for commercial use. It carries a commercial warranty with limited 8-year or 12,000-hour heat exchanger coverage. The Rinnai RX199iN is designed for residential applications. It offers a limited 15-year heat exchanger warranty, provided the product is registered within 90 days. The CXP160iN has a 5-year parts and 1-year labor warranty. The RX199iN provides longer residential protection. Choose based on your installation environment.
Energy Efficiency
Both units feature condensing technology for high efficiency. The Rinnai RX199iN achieves a UEF of .98. The Rinnai CXP160iN achieves a UEF of .97. Both ratings are considered super-high for tankless water heaters. The RX199iN holds a slight technical advantage in efficiency metrics by 0.01. In practice, both models will minimize energy waste effectively. The difference is minimal for most users. The RX199iN edges out the CXP160iN slightly here.
Which unit fits your home best
Large households needing maximum hot water
The RX199iN delivers 11.1 GPM, supporting seven simultaneous fixtures. Its higher flow rate ensures consistent hot water for busy families. This model prioritizes volume over recirculation features, making it ideal for homes with high concurrent demand. The compact design fits standard spaces while providing superior capacity for multiple bathrooms.
Commercial properties requiring recirculation technology
The CXP160iN includes an internal pump with Smart-Circ technology. It learns usage patterns to schedule recirculation automatically, saving energy. This 9 GPM unit handles six fixtures and is rated for commercial use. The integrated pump eliminates the need for external components, offering a streamlined solution for business environments.
Users prioritizing highest energy efficiency
The RX199iN achieves a UEF of 0.98, slightly higher than the CXP160iN’s 0.97. This minor edge in efficiency reduces energy consumption during operation. Both units are condensing and dual-fuel, but the RX199iN offers the top efficiency rating in this comparison. You get maximum performance per unit of fuel consumed.
The products compared
Rinnai 11.1 GPM Condensing Dual-Fuel Water Heater
Best for: high-flow multi-bathroom homes
- Fuel Type
- Natural Gas or Propane
- Flow Rate
- 11.1 GPM
- BTU
- 199k BTU
- Installation Location
- Indoor/Outdoor
- Venting Type
- Condensing
- Dimensions
- 30.1 × 18.5 × 30.1 inches
View on Amazon: Rinnai 11.1 GPM Condensing Dual-Fuel Water Heater Affiliate link
The Rinnai RX199iN delivers 11.1 GPM of hot water using natural gas or propane. Its condensing design achieves a UEF of .98, making it highly efficient. You can install it indoors or outdoors with Versa Vent. The unit measures 30.1 by 18.5 by 30.1 inches and weighs 55 pounds. It supports up to seven simultaneous fixtures. Smart Sense gas control adapts to fuel type. WiFi control requires a separate Controlr module.
Pros
- 11.1 GPM flow rate supports seven fixtures
- Versa Vent allows indoor or outdoor installation
- Condensing design yields a .98 UEF efficiency
- Smart Sense gas control works with propane or natural gas
Cons
- WiFi control requires a separate Controlr module
- 55-pound weight requires sturdy mounting
- Outdoor installation needs an RX-OVC vent cap
Good fit if
- You need high flow for multiple bathrooms
- You want indoor or outdoor flexibility
- You prioritize high energy efficiency
Skip if
- You cannot install a vent cap outdoors
- You want built-in WiFi without extra parts
- You need a smaller footprint than 30 inches
Verdict: Rinnai RX199iN 11.1 GPM Condensing Heater suits homes needing high capacity with flexible venting. It fits busy households with multiple simultaneous water demands.
Rinnai 9 GPM Dual-Fuel Tankless Water Heater
Best for: commercial high-flow hot water needs
- Fuel Type
- Natural Gas or Propane
- Flow Rate
- 9 GPM
- BTU
- 160,000 BTU
- Installation Location
- Indoor/Outdoor
- Dimensions
- 30.1 x 18.5 x 30.1 in
- Use
- Commercial
View on Amazon: Rinnai 9 GPM Dual-Fuel Tankless Water Heater Affiliate link
The Rinnai CXP160iN is a commercial tankless water heater delivering 9 GPM at 160,000 BTU. It runs on propane or natural gas and works indoors or outdoors. The unit includes an internal pump with Smart-Circ recirculation technology. Its compact footprint measures 30.1 by 30.1 by 18.5 inches. This model suits high-demand commercial applications requiring reliable hot water flow.
Pros
- 160,000 BTU heating capacity
- 9 GPM flow rate
- Indoor and outdoor installation
- Smart-Circ intelligent recirculation pump
- Versa Vent compatibility
Cons
- Commercial warranty limits parts coverage to 5 years
- WiFi control module sold separately
- Requires professional installation
Good fit if
- You need high flow for commercial use
- You require indoor or outdoor flexibility
- You want intelligent recirculation built-in
Skip if
- You need residential-only units
- You want included WiFi connectivity
- You prefer DIY installation
Verdict: Rinnai CXP160iN 160k BTU Commercial Heater delivers heavy-duty 9 GPM performance for commercial settings. It fits users who need flexible placement and smart recirculation without separate app hardware.
Specifications side by side
| Spec | Rinnai 11.1 GPM Condensing Dual-Fuel Water Heater | Rinnai 9 GPM Dual-Fuel Tankless Water Heater |
|---|---|---|
| Fuel Type | Natural Gas or Propane | Natural Gas or Propane |
| Flow Rate | 11.1 GPM | 9 GPM |
| BTU | 199k BTU | 160,000 BTU |
| Installation Location | Indoor/Outdoor | Indoor/Outdoor |
| Dimensions | not stated | 30.1 x 18.5 x 30.1 in |
| Use | not stated | Commercial |
| Venting Type | Condensing | Condensing |
| Weight | 55 pounds | 60 pounds |
| Size | 11.1 GPM | 9 GPM |
| Color | Silver | Silver |
| Model | RX199iN | CXP160iN |
Frequently asked questions
Which Rinnai tankless heater is better for a large family with multiple bathrooms?
The RX199iN is the better choice for large households. It delivers 11.1 GPM, supporting up to seven simultaneous fixtures. This higher flow rate ensures consistent hot water during peak usage times. The CXP160iN offers 9 GPM, which handles six fixtures. For busy families needing maximum capacity, the RX199iN provides the necessary volume.
Can I install these units in an outdoor setting?
Yes, both units support indoor or outdoor installation. This flexibility allows you to place them where space is limited or ventilation is difficult. The RX199iN uses condensing venting, which is efficient for various locations. The CXP160iN is designed for commercial high-flow needs but shares this versatile placement capability for your convenience.
Do these water heaters use natural gas or propane?
Both models offer dual-fuel flexibility. You can choose between natural gas or propane depending on your home's supply. This feature simplifies installation if you already have one fuel type available. It allows you to adapt the heater to your existing infrastructure without needing to switch fuel sources for optimal performance.
How do the dimensions of these two models compare?
Both units share identical physical dimensions. They measure 18.5 inches in width and 30.1 inches in height and length. This consistency makes swapping or comparing placement easy. The main difference is weight. The RX199iN weighs 55 pounds, while the CXP160iN is slightly heavier at 60 pounds due to its commercial build.
Is the CXP160iN suitable for heavy commercial use?
Yes, the CXP160iN is built for commercial high-flow needs. It delivers 9 GPM of hot water consistently. This model is ideal for users who need durable performance in business settings. It also features smart recirculation capabilities without separate app hardware. This makes it a robust choice for demanding commercial environments requiring reliable hot water.
Which model is lighter and easier to mount?
The RX199iN is the lighter option. It weighs 55 pounds compared to the CXP160iN's 60 pounds. This 5-pound difference may matter during installation or mounting. Both units have the same footprint, so space requirements are identical. If weight is a concern for your mounting setup, the RX199iN offers a slight advantage in handling.
Can these heaters run multiple showers at the same time?
Yes, both models support simultaneous use. The RX199iN supports up to seven fixtures, making it ideal for large homes. The CXP160iN handles six fixtures at once. This capacity ensures you do not experience cold water interruptions during busy mornings. Choose the RX199iN if you need the highest possible flow for multiple concurrent demands.