Looking Beyond the Rinnai RSC160iP Smart-Circ Condensing Gas Tankless Water Heater? 6 Alternatives Worth a Look
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The Rinnai RSC160iP Smart-Circ Condensing Gas Tankless Water Heater delivers 9 GPM in a compact 9x9x9 inch footprint. It uses propane and condensing venting to maximize efficiency for indoor use. Smart-Circ technology learns your usage patterns to schedule recirculation, saving energy. This unit suits homes that need high flow in a small space.
You might look elsewhere if you need different specs. Some buyers want outdoor installation, which this indoor model cannot provide. Others may prefer WiFi control, higher flow rates, or a lower price point. This guide compares 6 alternatives that share key traits like propane fuel and condensing technology. Each option offers distinct flow rates, dimensions, or features to match your specific needs. We selected these models because their specifications overlap with the Rinnai RSC160iP Smart-Circ Condensing Gas Tankless Water Heater in meaningful ways. Review the data to find the right fit for your household.
Our top pick: Rinnai Indoor Propane Condensing Tankless Water Heater.
How these alternatives differ from Rinnai RSC160iP
VancEpic 5.1 GPM Propane Condensing Water Heater
The VancEpic model offers 5.1 GPM, which is lower than the Rinnai RSC160iP’s 9 GPM. It uses 120,000 BTU compared to the Rinnai’s 160,000 BTU. The VancEpic unit is larger, measuring 20.2 inches wide and 20.2 inches deep, whereas the Rinnai fits in a 9x9 inch space. Both are indoor propane condensing heaters. You choose the VancEpic if you need a smaller flow rate and have more wall space. The Rinnai remains the better choice for high-demand households requiring more simultaneous fixtures. The VancEpic lacks the Smart-Circ recirculation feature found in the Rinnai.
Rheem IKONIC 10.1 GPM Propane Tankless Water Heater
The Rheem IKONIC provides 10.1 GPM, exceeding the Rinnai RSC160iP’s 9 GPM. It is designed for large homes with high hot water needs. The Rheem unit measures 17.3 inches wide and 28.6 inches tall, making it significantly larger than the compact Rinnai. Both use propane and indoor installation. The Rheem includes WiFi connectivity for remote control, a feature the Rinnai requires a separate module for. If you need higher flow and built-in smart control, the Rheem is superior. The Rinnai is better for tight spaces where the 9x9 footprint is critical. The Rheem weighs 86 pounds, while the Rinnai is 78 pounds.
Rinnai 9 GPM Outdoor Propane Condensing Heater
This Rinnai model is designed for outdoor installation, unlike the indoor RSC160iP. It also delivers 9 GPM with 160,000 BTU, matching the original’s capacity. The outdoor unit is larger, measuring 14.8 inches wide and 33.9 inches tall. It uses condensing venting like the indoor version. You should pick this if your installation location is outdoors. The indoor RSC160iP is necessary if you need to place the unit inside your home. Both are propane heaters. The outdoor model lacks the Smart-Circ recirculation technology included in the RSC160iP. The outdoor unit weighs 80.9 pounds, slightly more than the 78-pound indoor model.
Ranein 4.3 GPM Indoor Propane Tankless Water Heater
The Ranein unit provides 4.3 GPM, which is less than half the flow of the Rinnai RSC160iP. It uses 100,000 BTU, lower than the Rinnai’s 160,000 BTU. The Ranein is smaller in width at 14.2 inches but taller at 22.5 inches. Both are indoor propane heaters. The Ranein includes venting materials, which the Rinnai does not. You should choose the Ranein for small households with low hot water demand. The Rinnai is better for larger homes needing multiple fixtures running at once. The Ranein lacks the Smart-Circ energy-saving recirculation feature. It is a budget option for those who do not need high flow rates.
VEVOR 4.3 Gal Propane Tankless Water Heater
The VEVOR unit is a tankless heater with a 4.3-gallon capacity, differing from the Rinnai RSC160iP’s continuous flow design. It weighs only 19.8 pounds, much lighter than the 78-pound Rinnai. The VEVOR measures 13.8 inches wide and 21.7 inches tall. Both use propane and indoor installation. The VEVOR offers precise control and stability for small spaces. The Rinnai provides higher flow and Smart-Circ recirculation. You should pick the VEVOR if you prioritize a lighter, compact unit for small households. The Rinnai is superior for whole-house demand. The VEVOR lacks the high efficiency and recirculation features of the Rinnai.
Rinnai 11.1 GPM Condensing Tankless Water Heater
The Rinnai RXP199iN delivers 11.1 GPM, higher than the RSC160iP’s 9 GPM. It is designed for large homes with high simultaneous demand. The RXP199iN measures 19 inches wide and 31 inches tall, significantly larger than the compact Rinnai. It weighs 58 pounds, lighter than the 78-pound RSC160iP. Both are condensing heaters. The RXP199iN includes a Smart-Circ pump to reduce wait times. You should choose this if you need maximum flow for a large household. The RSC160iP is better for smaller spaces due to its compact footprint. The RXP199iN lacks the specific WiFi control module compatibility mentioned for the RSC160iP.
Quick picks
Our 7 picks
Rinnai Indoor Propane Condensing Tankless Water Heater
Best for: Compact indoor propane needs
- Fuel Type
- Propane
- Flow Rate
- Up to 9 GPM
- BTU
- 160,000 BTU
- Installation Location
- Indoor
- Dimensions
- 9 x 9 x 9 inches
- Venting Type
- Condensing
View on Amazon: Rinnai Indoor Propane Condensing Tankless Water Heater Affiliate link
The Rinnai RSC160iP is an indoor condensing propane water heater delivering up to 9 GPM. It features Smart-Circ technology to learn usage patterns and schedule recirculation for efficiency. The unit measures 9 x 9 x 9 inches and weighs 78 pounds. It is ENERGY STAR qualified with a Uniform Energy Factor of 0.110. This compact unit suits homes needing reliable hot water for multiple fixtures.
Pros
- Provides up to 9 GPM flow rate
- Smart-Circ technology learns usage patterns
- Compact 9 x 9 x 9 inch design
- ENERGY STAR qualified with 0.110 UEF
Cons
- WiFi Controlr module is not included
- Professional installation is recommended
- Heavier at 78 pounds than some competitors
Good fit if
- You need a compact indoor propane unit
- You want smart recirculation scheduling
- You require high flow for multiple fixtures
Skip if
- You need outdoor installation capability
- You want included WiFi control
- You prefer a lighter unit under 70 pounds
Verdict: The Rinnai RSC160iP Smart-Circ Propane Heater is a high-efficiency choice for homes needing 9 GPM in a small footprint. It fits buyers who value smart recirculation and compact indoor placement.
VancEpic 5.1 GPM Propane Condensing Water Heater
Best for: Small homes needing compact propane heating
- Fuel Type
- Propane
- Flow Rate
- 5.1 GPM
- BTU
- 120,000 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- 95°F to 149°F
- Dimensions
- 9.25 x 20.2 x 20.2 inches
View on Amazon: VancEpic 5.1 GPM Propane Condensing Water Heater Affiliate link
This indoor propane unit delivers 5.1 GPM at 120,000 BTU using condensing technology. It features a stainless steel heat exchanger and an LED digital display for precise temperature control between 95°F and 149°F. The compact design includes anti-freeze protection and a condensate drain kit. It suits small homes or apartments needing reliable whole-house hot water without the footprint of larger models.
Pros
- 120,000 BTU output for strong heating power
- 5.1 GPM flow rate for multiple fixtures
- LED digital display with fault code alarms
- Integrated anti-freeze function for cold climates
Cons
- 2-year limited warranty is shorter than industry standards
- Requires professional installation for proper venting
- Indoor-only installation limits placement options
Good fit if
- You need a compact unit for a small home
- You want precise digital temperature control
- You live in a cold climate needing anti-freeze
Skip if
- You require outdoor installation capability
- You need a warranty longer than 2 years
- You prefer smart app connectivity
Verdict: VancEpic 5.1 GPM Condensing Propane Heater offers strong performance for small households. It fits buyers who prioritize compact size and digital control over long-term warranty coverage.
Rheem IKONIC 10.1 GPM Propane Tankless Water Heater
Best for: Large homes needing high flow and smart control
- Fuel Type
- Liquid Propane
- Flow Rate
- 10.1 GPM
- BTU
- 180,000 BTU/hr
- Installation Location
- Indoor
- Dimensions
- 28.6 x 17.3 x 13.7 inches
- Features
- WiFi
View on Amazon: Rheem IKONIC 10.1 GPM Propane Tankless Water Heater Affiliate link
The Rheem IKONIC RECTGH-SR10iP delivers 10.1 GPM of hot water using liquid propane. Its 180,000 BTU burner supports high-demand households. Built-in Wi-Fi allows remote control via the EcoNet app. The unit includes recirculation to reduce water waste. It measures 28.6 by 17.3 by 13.7 inches and weighs 86 pounds. This indoor model suits homes needing strong, smart propane heating.
Pros
- 10.1 GPM flow rate with recirculation
- 180,000 BTU/hr heating capacity
- Built-in EcoNet Wi-Fi connectivity
- Compact 17.3-inch width for flexible installation
Cons
- Heavier at 86 pounds than some competitors
- Indoor installation only without outdoor kit
- Requires liquid propane fuel source
Good fit if
- You need high flow for multiple bathrooms
- You want app-based temperature control
- You have indoor propane access
Skip if
- You require outdoor installation without a kit
- You use natural gas instead of propane
- You need a lighter unit under 80 pounds
Verdict: Rheem IKONIC 10.1 GPM Propane fits large homes needing high output and smart features. It offers strong performance for busy households with propane access.
Rinnai 9 GPM Outdoor Propane Condensing Heater
Best for: Outdoor propane installations needing high flow
- Fuel Type
- Propane
- Flow Rate
- 9 GPM
- Installation Location
- Outdoor
- Dimensions
- 33.9 x 14.8 x 22.1 inches
- Venting Type
- Condensing
- Weight
- 80.9 pounds
View on Amazon: Rinnai 9 GPM Outdoor Propane Condensing Heater Affiliate link
The Rinnai RUR160EP is a condensing propane tankless water heater designed for outdoor installation. It delivers a 9 GPM flow rate and uses ThermaCirc360 technology with a built-in recirculation pump. This unit measures 33.9 x 14.8 x 22.1 inches and weighs 80.9 pounds. It suits outdoor spaces where condensing efficiency and high flow are priorities. You get wifi monitoring and a 15-year heat exchanger warranty.
Pros
- 9 GPM hot water flow rate
- Built-in recirculation pump with timer
- Condensing technology for efficiency
- Wifi monitoring capability
- 15-year heat exchanger warranty
Cons
- Discontinued model
- Outdoor installation only
- Heavier at 80.9 pounds
Good fit if
- You need outdoor propane heating
- You want 9 GPM flow
- You prefer condensing efficiency
Skip if
- You require indoor installation
- You need natural gas fuel
- You want a current model
Verdict: Rinnai RUR160EP 9 GPM Propane Outdoor Heater provides high flow and condensing efficiency for outdoor propane setups. It fits homes needing a powerful, space-saving outdoor unit with recirculation features.
Ranein 4.3 GPM Indoor Propane Tankless Water Heater
Best for: Indoor propane users needing 4.3 GPM
- Fuel Type
- Propane Gas
- Flow Rate
- 4.3 GPM
- BTU
- 100,000 BTU
- Installation Location
- Indoor
- Temperature Control
- 95°F-155°F
- Dimensions
- 22.5 x 14.2 x 14.2 inches
View on Amazon: Ranein 4.3 GPM Indoor Propane Tankless Water Heater Affiliate link
This Ranein unit delivers 4.3 GPM of hot water using propane at 100,000 BTU. It features an oxygen-free copper heat exchanger and four preset modes for different uses. The LED display shows real-time temperature and fault codes. It includes an anti-freeze device and a vent pipe for indoor installation. This model suits households needing reliable on-demand heating with precise temperature control.
Pros
- 4.3 GPM flow rate supports 3-4 water points
- 100,000 BTU input for powerful heating
- Oxygen-free copper heat exchanger resists corrosion
- LED display with temperature memory
- Includes vent pipe for indoor use
Cons
- Lower 4.3 GPM flow rate than most competitors
- Indoor installation only
- Not suitable for elevations above 2,000 ft
Good fit if
- You need a propane heater for indoor use
- You want a unit that includes the vent pipe
- You prefer preset modes for kitchen or bath
Skip if
- You require a flow rate above 5 GPM
- You live at an elevation over 2,000 ft
- You need an outdoor-rated unit
Verdict: Ranein 4.3 GPM Propane Tankless Heater offers solid indoor performance with included venting but lacks the high flow rates of larger competitors. It fits small to medium households prioritizing indoor propane efficiency over maximum output.
VEVOR 4.3 Gal Propane Tankless Water Heater
Best for: small households needing stable hot water
- Fuel Type
- Propane
- BTU
- 100,000 BTU/h
- Installation Location
- Indoor
- Temperature Control
- ±1°F
- Dimensions
- 21.7 x 13.8 x 13.8 inches
- Use
- Whole House
View on Amazon: VEVOR 4.3 Gal Propane Tankless Water Heater Affiliate link
This indoor propane unit delivers 100,000 BTU/h with a 4.3-gallon capacity. It features ±1°F precision temperature control and an LED display for real-time monitoring. The compact design measures 21.7 x 13.8 x 13.8 inches. It includes multiple safety protections against overheating and dry burning. This heater suits small households needing reliable hot water for whole-house use.
Pros
- 100,000 BTU/h heating capacity
- ±1°F precision temperature control
- LED display with touch panel
- Multiple safety protections included
Cons
- 4.3 GPM flow rate is lower than competitors
- Heavier at 19.8 pounds
- No smart app or remote control mentioned
Good fit if
- You need a compact indoor propane heater
- You want precise temperature stability
- You have a small household
Skip if
- You require high flow rates for multiple bathrooms
- You prefer natural gas over propane
- You want smart home integration
Verdict: VEVOR 4.3 Gal Propane Tankless Water Heater offers precise control and safety for small spaces. It fits users prioritizing stability over high volume.
Rinnai 11.1 GPM Condensing Tankless Water Heater
Best for: large homes with high simultaneous hot water demand
- Fuel Type
- Natural Gas, Propane
- Flow Rate
- 11.1 GPM
- BTU
- 199k BTU
- Installation Location
- Indoor/Outdoor
- Dimensions
- 31 x 19 x 19 in
- Venting Type
- Condensing
View on Amazon: Rinnai 11.1 GPM Condensing Tankless Water Heater Affiliate link
The Rinnai RXP199iN delivers 11.1 GPM of hot water for up to seven fixtures. It uses Smart Sense gas control for propane or natural gas. Smart-Circ technology manages recirculation to save energy. The unit measures 31 x 19 x 19 inches and weighs 58 pounds. It works indoors or outdoors. This model suits large homes needing high flow and smart scheduling.
Pros
- 11.1 GPM flow rate supports seven fixtures
- Smart-Circ recirculation pump learns usage patterns
- Works with propane or natural gas
- Condensing design achieves .98 UEF
Cons
- WiFi control requires separate Controlr module
- 58 pounds is heavier than smaller units
- Outdoor install needs specific vent cap
Good fit if
- You need hot water for multiple bathrooms
- You want smart recirculation scheduling
- You need indoor or outdoor flexibility
Skip if
- You only have one bathroom sink
- You want built-in WiFi without extra parts
- You prefer a lighter, smaller unit
Verdict: Rinnai RXP199iN 11.1 GPM Condensing Heater fits large households with high simultaneous demand. Its Smart-Circ pump reduces wait times efficiently.
Specifications side by side
| Spec | Rinnai Indoor Propane Condensing Tankless Water Heater | VancEpic 5.1 GPM Propane Condensing Water Heater | Rheem IKONIC 10.1 GPM Propane Tankless Water Heater | Rinnai 9 GPM Outdoor Propane Condensing Heater | Ranein 4.3 GPM Indoor Propane Tankless Water Heater | VEVOR 4.3 Gal Propane Tankless Water Heater | Rinnai 11.1 GPM Condensing Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Propane | Propane | Liquid Propane | Propane | Propane Gas | Propane | Natural Gas, Propane |
| Flow Rate | Up to 9 GPM | 5.1 GPM | 10.1 GPM | 9 GPM | 4.3 GPM | not stated | 11.1 GPM |
| BTU | 160,000 BTU | 120,000 BTU/hr | 180,000 BTU/hr | not stated | 100,000 BTU | 100,000 BTU/h | 199k BTU |
| Installation Location | Indoor | Indoor | Indoor | Outdoor | Indoor | Indoor | Indoor/Outdoor |
| Temperature Control | not stated | 95°F to 149°F | not stated | not stated | 95°F-155°F | ±1°F | not stated |
| Dimensions | 9 x 9 x 9 inches | 9.25 x 20.2 x 20.2 inches | 28.6 x 17.3 x 13.7 inches | 33.9 x 14.8 x 22.1 inches | 22.5 x 14.2 x 14.2 inches | 21.7 x 13.8 x 13.8 inches | 31 x 19 x 19 in |
| Use | not stated | not stated | not stated | not stated | Whole House | Whole House | not stated |
| Venting Type | Condensing | Condensing | not stated | Condensing | not stated | not stated | Condensing |
| Features | not stated | not stated | WiFi | not stated | not stated | not stated | not stated |
| Weight | 78 pounds | not stated | 86 pounds | 80.9 pounds | not stated | 19.8 pounds | 58 pounds |
| Color | Gray | Condensing | Gray | Outdoor Installation | LPG | Gray | Silver |
| Model | RSC160iP | RH12KG-C-LPG | RECTGH-SR10iP | RUR160ep | RANEIN-43GPM-100KBTU | JSQ30-B | RXP199iN |
| Size | not stated | 5.1GPM, 120,000BTU, LPG | 10.1 GPM (w Recirc) | 9 GPM | 4.3GPM Indoor | 4.3 Gal | 11.1 GPM |
Looking beyond this list? See best natural gas patio heaters.
Frequently asked questions
What is the best alternative to the Rinnai RSC160iP for small indoor spaces?
The Rinnai Indoor Propane Condensing Tankless Water Heater is the top pick for compact needs. It delivers 9 GPM while maintaining a tiny 9x9x9 inch footprint. This unit uses propane and condensing venting, making it ideal for buyers who need smart recirculation features in a small indoor area without sacrificing flow rate.
Which propane tankless heater offers the highest flow rate for large homes?
The Rinnai 11.1 GPM Condensing Tankless Water Heater provides the highest output in this list. Its model RXP199iN delivers 11.1 GPM to handle high simultaneous demand in large households. The Smart-Circ pump reduces wait times efficiently, ensuring consistent hot water supply for busy homes that require maximum capacity and speed.
Is there a propane water heater with WiFi connectivity for remote control?
The Rheem IKONIC 10.1 GPM Propane Tankless Water Heater includes built-in WiFi capabilities. This feature allows you to monitor and control the unit remotely via a smartphone app. It is designed for large homes needing high output and smart integration, offering strong performance for busy households with reliable propane access.
What is a good budget option for small homes needing propane heating?
The VancEpic 5.1 GPM Propane Condensing Water Heater is the best budget choice. It provides 5.1 GPM using 120,000 BTU, suitable for small households. While larger than the Rinnai RSC160iP at 20.2 inches wide, it offers compact indoor installation with digital control, prioritizing immediate performance over extended warranty coverage for cost-conscious buyers.
Can I install a propane tankless heater outdoors for better space saving?
The Rinnai 9 GPM Outdoor Propane Condensing Heater is designed specifically for outdoor use. Its model RUR160ep provides high flow and condensing efficiency for outdoor propane setups. This unit fits homes needing a powerful, space-saving outdoor unit with recirculation features, allowing you to free up indoor space while maintaining reliable hot water supply.
Which unit is best for whole-house use in small spaces with stable flow?
The VEVOR 4.3 Gal Propane Tankless Water Heater offers precise control and safety for small spaces. It is rated for whole-house use, prioritizing stability over high volume. Weighing only 19.8 pounds, this compact indoor unit fits users who need reliable hot water for smaller households without requiring the high flow rates of larger competitors.
What is a reliable indoor propane heater with included venting accessories?
The Ranein 4.3 GPM Indoor Propane Tankless Water Heater includes venting for easier installation. It offers solid indoor performance for small to medium households prioritizing propane efficiency. While it lacks the high flow rates of larger units, its 4.3 GPM output provides consistent hot water for homes that value indoor convenience and straightforward setup.