Looking Beyond the Konfino Outdoor Natural Gas Tankless Water Heater? 6 Alternatives Worth a Look
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You are looking at konfino outdoor natural gas tankless water heater alternatives because the original model may not fit every home. The Konfino 8.1 GPM Outdoor Gas Heater delivers 190,000 BTU with precise temperature control and a copper heat exchanger. Its compact 24.3 x 15 x 8.3 inch design suits wall-mounted outdoor installs. However, you might need a different flow rate, a smaller footprint, or smart app connectivity. Some buyers prefer a higher GPM for whole-house use or a lower price point for budget projects.
The 6 alternatives listed here share key specs with the Konfino unit. Each option is a natural gas heater designed for outdoor installation. We selected them because their BTU output, flow rates, or dimensions overlap with your original choice. This list covers brands like Rinnai, Rheem, and Westinghouse. You will find options with WiFi control, higher flow speeds, or compact bodies. Review the published specifications to see which model matches your water demand and space constraints. Focus on the flow rate and physical size to ensure a proper fit for your outdoor setup.
How these models differ
Ranein 8.5 GPM Outdoor Natural Gas Water Heater
The Ranein 8.5 GPM Outdoor Natural Gas Water Heater offers a slightly higher flow rate than the Konfino model. It measures 15.1 inches wide and 24.3 inches tall. This unit lacks the digital temperature precision found in the Konfino wired controller. You get less control over exact water temperatures. The Ranein also does not support high-altitude operation. Choose this if you need strong flow at moderate elevations without needing smart adjustments. It is a simpler alternative for basic outdoor shower needs.
APUS 190,000 BTU Outdoor Natural Gas Water Heater
The APUS 190,000 BTU Outdoor Natural Gas Water Heater matches the Konfino heat output but uses a much narrower design. It is only 6.54 inches wide and deep. This compact footprint saves wall space. The APUS includes app control for remote management, which the Konfino wired controller does not offer. You gain digital convenience but lose the physical feedback of a hardwired panel. Select this model if you prefer smartphone control and have limited installation width. It suits tech-focused users who want high flow in a small package.
Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
The Rinnai 7.6 GPM Outdoor Natural Gas Water Heater provides a non-condensing venting option, differing from the Konfino blower design. It is slightly wider at 14.1 inches but has a smaller depth. The flow rate is lower than the Konfino 8.1 GPM. You trade volume for brand reputation and compact durability. This unit is heavier at 53.3 pounds. Pick this if you prioritize long-term reliability and a smaller footprint over maximum simultaneous shower capacity. It is ideal for homes with moderate hot water demands.
Westinghouse 8.1 GPM Outdoor Natural Gas Heater
The Westinghouse 8.1 GPM Outdoor Natural Gas Heater matches the Konfino flow rate and BTU output. It is wider at 17.1 inches and taller at 26.8 inches. This unit focuses on stable temperature control and freeze protection. You get similar performance in a larger frame. The Westinghouse lacks the downward blower feature of the Konfino. Choose this if you want a straightforward outdoor heater with reliable freeze safeguards. It is a solid choice for users who prioritize consistent shower temperatures over compact dimensions.
Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
The Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater delivers significantly higher flow than the Konfino model. It is the highest capacity option in this list. The unit includes WiFi connectivity for remote monitoring. It is narrower than the Konfino at 13.5 inches wide. You gain volume and smart features but lose the copper heat exchanger found in the Konfino. Select this if you have a large household needing maximum hot water volume. It suits users who want app integration and high output.
Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
The Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater has a lower flow rate than the Konfino 8.1 GPM model. It is taller at 35 inches but has a smaller width. This unit is designed for moderate demand rather than whole-home peak usage. It lacks the smart temperature precision of the Konfino. You get a traditional outdoor gas heater with steady performance. Choose this if you need a reliable unit for fewer simultaneous outlets. It is best for homes with moderate hot water needs.
Quick picks
Our 7 picks
Konfino 8.1 GPM Outdoor Gas Heater
Best for: Whole-home outdoor hot water supply
- Fuel Type
- Natural Gas
- Flow Rate
- 8.1 GPM
- BTU
- 190,000 BTU
- Installation Location
- Outdoor
- Voltage
- 120V AC
- Dimensions
- 8.3 x 15 x 24.3 inches
View on Amazon: Konfino 8.1 GPM Outdoor Gas Heater Affiliate link
The Konfino Outdoor Natural Gas Tankless Water Heater delivers 190,000 BTU and 8.1 GPM for whole-home use. It features a downward blower for quiet combustion and a copper heat exchanger for efficient heat transfer. The unit mounts outdoors and includes precise temperature control via a wired controller. It supports low flow rates and offers freeze protection for various climates.
Pros
- 190,000 BTU output with 8.1 GPM flow rate
- Downward blower prevents smoke backflow and reduces noise
- Copper heat exchanger improves heat transfer efficiency
- Adjustable temperature from 95°F to 149°F
- Works with minimum flow as low as 0.79 GPM
Cons
- Requires 120V AC power for operation
- Wired controller limits remote adjustment convenience
- Heavier at 44.1 pounds than some competitors
Good fit if
- You need whole-home hot water for multiple fixtures
- You have weak water pressure at some outlets
- You want precise temperature control via a display
Skip if
- You only have 120V power available for installation
- You prefer a compact unit under 40 pounds
- You need wireless remote control capabilities
Verdict: Konfino 8.1 GPM Outdoor Gas Heater suits homes needing high flow rates and precise temperature management. Its downward blower and copper exchanger offer reliable performance for outdoor installation.
Ranein 8.5 GPM Outdoor Natural Gas Water Heater
Best for: multiple outdoor showers in low altitudes
- Fuel Type
- Natural Gas
- Flow Rate
- 8.5 GPM
- BTU
- 190,000 BTU
- Installation Location
- Outdoor
- Dimensions
- 24.3 x 15.1 x 15.1 in
- Weight
- 44 pounds
View on Amazon: Ranein 8.5 GPM Outdoor Natural Gas Water Heater Affiliate link
The Ranein RHO19K-NG delivers 190,000 BTU and an 8.5 GPM flow rate for outdoor natural gas use. Its compact 24.3-inch height and 44-pound weight fit tight spaces. The unit includes anti-freeze protection and a bottom-mounted fan for safety. It supports 4-6 outlets, making it suitable for whole-family use in moderate climates below 2,000 feet elevation.
Pros
- High 8.5 GPM flow rate for multiple outlets
- 190,000 BTU heating capacity
- Built-in anti-freeze protection
- Bottom-mounted fan reduces smoke backflow risk
Cons
- Not recommended for altitudes over 2,000 feet
- Requires manual draining of pressure relief valve in cold weather if unused
- No digital display or remote control mentioned
Good fit if
- You need high flow for multiple outdoor showers
- You have limited vertical space for installation
- You live below 2,000 feet elevation
Skip if
- You live above 2,000 feet elevation
- You need indoor installation
- You require digital temperature controls
Verdict: Ranein 8.5 GPM Outdoor Natural Gas Heater provides strong flow for outdoor use but lacks altitude flexibility and digital controls. It fits homes with moderate elevation and multiple outdoor water needs.
APUS 190,000 BTU Outdoor Natural Gas Water Heater
Best for: high-flow outdoor applications with app control
- Fuel Type
- Natural Gas
- Flow Rate
- 8.1 GPM
- BTU
- 190,000 BTU
- Installation Location
- Outdoor
- Voltage
- 120V AC
- Temperature Control
- 95°F–149°F, ±1°F
View on Amazon: APUS 190,000 BTU Outdoor Natural Gas Water Heater Affiliate link
The APUS 190,000 BTU unit delivers 8.1 GPM of instant hot water for outdoor use. It features a compact 22.48 x 15.51 x 6.54 inch footprint and connects to 120V AC power. Smart temperature control via the Tuya app maintains accuracy within ±1°F. This model suits homes needing whole-house capacity with reliable performance at multiple fixtures simultaneously.
Pros
- 190,000 BTU heating capacity for high flow rates
- 8.1 GPM flow rate supports 5-6 simultaneous points
- Smart app control with ±1°F temperature accuracy
- Ultra-low 0.79 GPM minimum flow for weak pressure
- Oxygen-free copper heat exchanger for durability
Cons
- Requires 120V AC electrical connection for operation
- 2-year warranty is shorter than industry standards
- App control requires smartphone setup and connectivity
Good fit if
- You need high flow for multiple outdoor fixtures
- You prefer remote temperature adjustments via app
- You have a 120V AC outlet near the unit
Skip if
- You require a longer warranty period than two years
- You lack access to 120V AC power outdoors
- You prefer manual controls without app dependency
Verdict: APUS 190k BTU Outdoor Natural Gas Heater offers strong performance for high-demand outdoor setups. It fits users who value smart control and high flow, provided they have the necessary electrical outlet.
Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
Best for: compact outdoor installations with high hot water demand
- Fuel Type
- Natural Gas
- Flow Rate
- 9.8 GPM
- BTU
- 199k BTU
- Installation Location
- Outdoor
- Dimensions
- 24.6 x 14.1 x 10.8 in
- Venting Type
- Non-Condensing
View on Amazon: Rinnai 7.6 GPM Outdoor Natural Gas Water Heater Affiliate link
The Rinnai RE199eN is a non-condensing natural gas tankless water heater designed for outdoor installation. It delivers 7.6 gallons per minute, enough for six fixtures simultaneously. The unit measures 24.6 by 14.1 by 10.8 inches and weighs 53.3 pounds. Its compact footprint fits in tight spaces. You get a durable heat exchanger with a 15-year residential guarantee. This model suits homes needing reliable high-volume hot water outdoors.
Pros
- 7.6 GPM flow rate supports up to six fixtures
- Compact 24.6 x 14.1 x 10.8 inch footprint
- 15-year limited warranty on the heat exchanger
- LED screen displays error codes and service reminders
- Non-condensing design for outdoor use
Cons
- WiFi control requires a separate Controlr module
- Professional installation is recommended
- Flow rate is lower than some competitors offering 9.5 GPM
Good fit if
- You need a reliable outdoor unit for multiple bathrooms
- You want a compact heater that fits in tight spaces
- You prefer a brand with a long heat exchanger warranty
Skip if
- You require built-in WiFi without buying extra parts
- You need a flow rate above 8 GPM
- You plan to install the unit yourself without a technician
Verdict: Rinnai RE199eN 7.6 GPM Outdoor Heater offers a compact, durable solution for outdoor hot water needs. It is ideal for households prioritizing long-term reliability and a small footprint over maximum flow rate.
Westinghouse 8.1 GPM Outdoor Natural Gas Heater
Best for: stable outdoor temperature control
- Fuel Type
- Natural Gas
- Flow Rate
- 8.1 GPM
- BTU
- 180,000 BTU
- Installation Location
- Outdoor
- Voltage
- 120V AC
- Temperature Control
- 95–158°F, ±1°F
View on Amazon: Westinghouse 8.1 GPM Outdoor Natural Gas Heater Affiliate link
This outdoor natural gas unit delivers 8.1 GPM at 180,000 BTU, supporting three to five fixtures simultaneously. It maintains temperature within ±1°F using self-modulating technology. The CSA-certified design includes freeze protection and a variable-speed fan for year-round reliability. Weighing 42 pounds, it mounts on walls and requires 120V AC power. It suits households needing stable hot water flow in outdoor settings.
Pros
- 8.1 GPM flow rate for multiple fixtures
- ±1°F temperature stability
- CSA certified for safety
- Integrated freeze protection
Cons
- 180,000 BTU is lower than the 190,000 BTU units on this list
- Requires 120V AC electrical connection
- 2-year limited warranty is shorter than the 5-year heat exchanger coverage
Good fit if
- You need precise temperature control within ±1°F
- You require an outdoor unit with freeze protection
- You have a 120V AC outlet near the installation site
Skip if
- You need more than 8.1 GPM flow rate
- You want a unit with higher than 180,000 BTU output
- You prefer a longer standard warranty than 2 years
Verdict: Westinghouse 8.1 GPM Outdoor Natural Gas Heater offers stable temperature control and outdoor durability, making it a solid choice for users prioritizing consistent shower performance and freeze protection.
Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
Best for: high-flow whole-house outdoor needs
- Fuel Type
- Natural Gas
- Flow Rate
- 9.5 GPM
- BTU
- 199,900 BTU/hr
- Installation Location
- Outdoor
- Temperature Control
- ±1°F
- Certification
- CSA
View on Amazon: Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater Affiliate link
This Rheem outdoor unit delivers 9.5 GPM at a 35°F temperature rise, powered by 199,900 BTUs. It features a non-condensing design with an 0.82 UEF rating. The digital LED panel allows precision temperature adjustments within ±1°F. You get built-in freeze protection and CSA certification. The metal cabinet supports wall mounting for whole-house use.
Pros
- 9.5 GPM flow rate for 3-4 simultaneous showers
- 199,900 BTU/hr high output
- Precision ±1°F digital temperature control
- 0.82 UEF energy efficiency rating
- CSA certified with multi-point safety system
Cons
- No WiFi connectivity in this specific model
- Requires professional installation
- Non-condensing design limits efficiency compared to condensing units
Good fit if
- You need high flow for multiple bathrooms
- You want precise temperature control
- You prefer outdoor installation
Skip if
- You require smart home integration
- You need indoor installation
- You want a condensing unit
Verdict: Rheem RTG-95XLN-3 9.5 GPM Natural Gas Heater suits large households needing reliable, high-volume hot water. Its precision controls and high output make it ideal for homes with multiple simultaneous water demands.
Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
Best for: moderate flow outdoor natural gas needs
- Fuel Type
- Natural Gas
- Flow Rate
- 7.5 GPM
- Installation Location
- Outdoor
- Dimensions
- 35 x 14.5 x 22 inches
View on Amazon: Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater Affiliate link
The Rinnai RUS75eN is a natural gas tankless water heater designed for outdoor installation. It delivers a steady 7.5 GPM flow rate, allowing you to run up to six appliances simultaneously. The unit measures 35 by 14.5 by 22 inches and uses standard venting options. It is ideal for households needing reliable, endless hot water with a compact footprint that fits various outdoor spaces.
Pros
- Delivers 7.5 GPM flow for multiple simultaneous uses
- Compact 35 x 14.5 x 22 inch design
- Natural gas fuel type for efficient heating
- Flexible venting options including PVC/CPVC
Cons
- 7.5 GPM flow is lower than 8.1 to 9.5 GPM competitors
- 1-year labor warranty is shorter than typical industry standards
- Requires professional installation for proper setup
Good fit if
- You need a reliable outdoor unit for multiple bathrooms
- You prefer natural gas over propane for fuel
- You have limited outdoor space for installation
Skip if
- You require a flow rate above 8 GPM
- You want a unit with a longer labor warranty
- You plan to install the heater yourself without help
Verdict: Rinnai RUS75eN 7.5 GPM Outdoor Gas Heater provides steady hot water for homes with moderate demand. It suits buyers who prioritize brand reliability and compact outdoor placement over maximum flow speed.
Specifications side by side
| Spec | Konfino 8.1 GPM Outdoor Gas Heater | Ranein 8.5 GPM Outdoor Natural Gas Water Heater | APUS 190,000 BTU Outdoor Natural Gas Water Heater | Rinnai 7.6 GPM Outdoor Natural Gas Water Heater | Westinghouse 8.1 GPM Outdoor Natural Gas Heater | Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater | Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas |
| Flow Rate | 8.1 GPM | 8.5 GPM | 8.1 GPM | 9.8 GPM | 8.1 GPM | 9.5 GPM | 7.5 GPM |
| BTU | 190,000 BTU | 190,000 BTU | 190,000 BTU | 199k BTU | 180,000 BTU | 199,900 BTU/hr | not stated |
| Installation Location | Outdoor | Outdoor | Outdoor | Outdoor | Outdoor | Outdoor | Outdoor |
| Voltage | 120V AC | not stated | 120V AC | not stated | 120V AC | not stated | not stated |
| Temperature Control | not stated | not stated | 95°F–149°F, ±1°F | not stated | 95–158°F, ±1°F | ±1°F | not stated |
| Certification | not stated | not stated | not stated | not stated | CSA | CSA | not stated |
| Dimensions | 8.3 x 15 x 24.3 inches | 24.3 x 15.1 x 15.1 in | 22.48 × 15.51 × 6.54 in | 24.6 x 14.1 x 10.8 in | 26.8 x 17.1 x 17.1 inches | 20.8 x 13.5 x 9.4 inches | 35 x 14.5 x 22 inches |
| Use | not stated | not stated | not stated | not stated | Whole House | not stated | not stated |
| Venting Type | not stated | not stated | not stated | Non-Condensing | not stated | Non-Condensing | not stated |
| Features | WiFi | not stated | not stated | not stated | not stated | WiFi | not stated |
| Weight | 44.1 pounds | 44 pounds | 42.5 pounds | 53.3 pounds | 42 pounds | 39.3 pounds | not stated |
| Model | Natural Gas Max 8.1 | RHO19K-NG | AP-AWH-W26NG | REU-VE2737WD-US-N | HS180A0G-NG | RTG-95XLN-3 | RUS75eN |
| Size | not stated | 8.5 GPM Outdoor | not stated | 9.8 GPM | not stated | 9.5 GPM (No WiFi) | 7.5 GPM |
| Color | not stated | Gray-NG | Gray | Silver | Grey 81NO | Gray | Outdoor Installation |
Looking beyond this list? See bali outdoors gas patio heater alternatives.
Frequently asked questions
Which outdoor gas heater has the highest flow rate?
The Rheem RTG-95XLN-3 offers the highest flow rate at 9.5 GPM. It is designed for large households with multiple simultaneous water demands. This model also includes WiFi connectivity for remote monitoring. Its compact size measures 13.5 inches wide and 20.8 inches tall. This makes it suitable for whole-home outdoor needs.
Do any of these models include smart home features?
Yes, the Rheem RTG-95XLN-3 and the APUS 190,000 BTU model feature smart controls. The Rheem unit includes WiFi for remote access. The APUS model supports app control for high-flow outdoor setups. These features allow you to manage temperature and settings from your phone without needing physical access to the unit.
What is the smallest outdoor tankless water heater by footprint?
The APUS 190,000 BTU model has the smallest footprint. It measures only 6.54 inches wide and 6.54 inches deep. Its height is 22.5 inches. This compact design is ideal for tight outdoor spaces. It weighs 42.5 pounds, making it lighter than most other units on this list.
Are there non-condensing venting options available?
Yes, both the Rinnai RE199eN and the Rheem RTG-95XLN-3 use non-condensing venting. This venting type is standard for many outdoor natural gas heaters. It simplifies installation compared to condensing models. These units are built for outdoor durability and reliable performance in various weather conditions.
Which heater is best for multiple outdoor showers?
The Ranein 8.5 GPM Outdoor Natural Gas Water Heater is best for this use. It provides strong flow for multiple outdoor showers at low altitudes. It measures 15.1 inches wide and 24.3 inches tall. However, it lacks altitude flexibility and digital controls. It is a solid choice for moderate elevation homes.
Does the Konfino model have a specific heat exchanger material?
Yes, the Konfino 8.1 GPM Outdoor Gas Heater features a copper heat exchanger. This component aids in precise temperature management and reliable performance. The unit also uses a downward blower design. These specs make it suitable for whole-home outdoor hot water supply with consistent output.
What is the weight of the Rinnai 7.5 GPM model?
The Rinnai RUS75eN 7.5 GPM model weighs 53.3 pounds. It is one of the heavier units on this list. Its dimensions are 14.5 inches wide, 35 inches tall, and 22 inches long. This sturdy build supports its function as a reliable outdoor heater for moderate hot water demands.