ECCOTEMP 6.8 GPM Outdoor Natural Alternatives: 6 Similar Picks Compared
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The eccotemp 6 8 gpm outdoor natural alternatives list helps you find similar units if this model does not fit your specific needs. The original heater offers smart app control and voice commands alongside a 6.8 GPM flow rate. It is designed for outdoor use with natural gas and includes features like Eco Mode for energy tracking. These specs make it ideal for homes with up to three bathrooms that prioritize connectivity.
You might prefer a different pick if you need a higher flow rate or a more compact footprint. Some buyers prioritize durability over smart features, while others seek better value or specific certifications. This guide compares 6 outdoor natural gas water heaters that share key specifications with the original. We selected these alternatives because their flow rates, fuel types, and installation requirements overlap with the ECCOTEMP unit. You can review the data to find the best match for your household size and space constraints.
Our top pick: Eccotemp 6.8 GPM Outdoor Natural Gas Water Heater.
How each alternative compares
Ranein 8.5 GPM Outdoor Natural Gas Water Heater
The Ranein 8.5 GPM model offers a higher flow rate than the original 6.8 GPM unit. It measures 15.1 by 24.3 by 15.1 inches and weighs 44 pounds. This larger footprint may challenge tight outdoor spaces. You get more water volume for multiple bathrooms. However, it lacks the smart app connectivity and voice control features of the Eccotemp. You also miss out on energy tracking and scheduling tools. This unit suits buyers who prioritize raw flow capacity and basic durability over digital management. It is a solid choice for homes needing high-volume hot water without the need for remote monitoring or smart home integration.
APUS 190,000 BTU Outdoor Natural Gas Water Heater
The APUS heater delivers 190,000 BTU of power, significantly exceeding the original 140,000 BTU rating. It includes app control, similar to the Eccotemp, allowing for remote temperature adjustments. The unit is compact at 6.54 by 22.5 by 6.54 inches and weighs 42.5 pounds. This slim profile fits narrow outdoor areas better than the original. You gain heating power for faster recovery rates. However, the smaller dimensions might limit internal component longevity compared to bulkier models. This pick works well for users who need strong heating performance in a space-constrained area. It balances smart features with high output, making it ideal for those who want app control without sacrificing heating speed.
Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
The Rinnai RE199eN provides a 7.6 GPM flow rate, outperforming the original 6.8 GPM model. It measures 14.1 by 24.6 by 10.8 inches and weighs 53.3 pounds. This unit is non-condensing and designed for outdoor durability. You get a longer heat exchanger warranty for long-term reliability. However, it lacks the smart app and voice control features found in the Eccotemp. You also lose the ability to track energy consumption remotely. This heater suits buyers who prioritize build quality and warranty coverage over digital convenience. It is ideal for outdoor installations where robust construction matters more than smartphone integration or remote scheduling capabilities.
Westinghouse 8.1 GPM Outdoor Natural Gas Heater
The Westinghouse 8.1 GPM model offers a higher flow rate than the original 6.8 GPM unit. It measures 17.1 by 26.8 by 17.1 inches and weighs 42 pounds. This larger size requires more outdoor mounting space. You gain precise temperature control and strong safety certifications. However, it does not include smart app connectivity or voice command support. You miss out on remote monitoring and energy tracking features. This unit is best for users who value consistent performance and safety standards over digital features. It fits homes needing reliable hot water without the complexity of smart home integration. It is a practical choice for those who prefer manual control and proven durability.
Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
The Rheem RTG-95XLN-3 delivers a substantial 9.5 GPM flow rate, far exceeding the original 6.8 GPM. It measures 13.5 by 20.8 by 9.4 inches and weighs 39.3 pounds. This compact design fits well in tight outdoor spaces. It includes WiFi connectivity for remote control, similar to the Eccotemp. You get higher water volume for large families. However, the flow rate specification notes a non-WiFi variant, so verify your specific model includes smart features. This heater suits buyers needing maximum hot water output for multiple bathrooms. It balances high capacity with digital control, making it ideal for large households that require both speed and remote management capabilities.
Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
The Rinnai RUS75eN provides a 7.5 GPM flow rate, surpassing the original 6.8 GPM model. It measures 14.5 by 35 by 22 inches and weighs significantly more due to its height. This tall profile requires ample vertical mounting space outdoors. You gain superior flow capacity for large households. However, it lacks smart app connectivity and voice control features. You also miss out on energy tracking and remote scheduling tools. This unit is best for buyers who prioritize raw hot water volume and durability over digital convenience. It fits homes needing high-flow performance without the need for smartphone integration. It is a robust choice for those who value traditional reliability and high output.
Quick picks
Our 7 picks
Eccotemp 6.8 GPM Outdoor Natural Gas Water Heater
Best for: smart-controlled outdoor heating for up to three bathrooms
- Fuel Type
- Natural Gas
- Flow Rate
- 6.8 GPM
- BTU
- 140,000 BTU
- Installation Location
- Outdoor
- Temperature Control
- 95-140°F
- Certification
- CSA
View on Amazon: Eccotemp 6.8 GPM Outdoor Natural Gas Water Heater Affiliate link
The ECCOTEMP SH22-NG delivers 6.8 GPM at 140,000 BTU for outdoor natural gas installation. It supports up to three bathrooms with a 95–140°F range. The unit includes smart app control for scheduling and energy tracking. Voice commands via Alexa or Google Home add convenience. Its compact 7.25 x 14 x 23-inch build fits standard outdoor spaces.
Pros
- 6.8 GPM flow rate for multiple simultaneous uses
- 140,000 BTU output for reliable heating
- Smart app control with scheduling and Eco Mode
- Voice control compatible with Alexa and Google Home
Cons
- Lower 140,000 BTU rating compared to 190,000 BTU competitors
- 6.8 GPM flow rate is lower than 8.5 or 9.5 GPM models
- Requires outdoor installation only
Good fit if
- You need smart app control for scheduling and energy monitoring
- You want voice command integration with Alexa or Google Home
- You have a standard single-family home with up to three bathrooms
Skip if
- You require a flow rate higher than 6.8 GPM
- You need a unit with more than 140,000 BTU
- You are looking for an indoor installation option
Verdict: ECCOTEMP 6.8 GPM Outdoor Natural Gas Heater suits buyers who prioritize smart features and voice control over maximum flow rate. It is ideal for homes with up to three bathrooms that value energy tracking and app management.
Ranein 8.5 GPM Outdoor Natural Gas Water Heater
Best for: High-flow outdoor natural gas needs
- 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 BTUs and an 8.5 GPM flow rate for outdoor use. Its compact 24.3-inch height and 44-pound weight fit standard 3/4-inch NPT connections. The unit includes anti-freeze protection and a bottom-mounted fan for safety. It suits families needing hot water for multiple outlets without waiting for preheating.
Pros
- 190,000 BTU/hr heating capacity
- 8.5 GPM maximum flow rate
- Anti-freeze protection included
- Bottom-mounted fan reduces backflow risk
Cons
- Not recommended for altitudes over 2,000 feet
- Requires manual draining in cold weather
- No smart home connectivity
Good fit if
- You need high flow for multiple outlets
- You have an outdoor natural gas line
- You want a compact outdoor unit
Skip if
- You live above 2,000 feet elevation
- You want indoor installation
- You need smart app control
Verdict: Ranein 8.5 GPM Outdoor Natural Gas Heater provides strong heating power for outdoor families. It fits users who prioritize flow rate and safety features over smart connectivity.
APUS 190,000 BTU Outdoor Natural Gas Water Heater
Best for: Whole-home hot water 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
This APUS unit delivers 190,000 BTU and 8.1 GPM of hot water for whole-home use. It features smart temperature control via the Tuya app or a wired controller, maintaining accuracy within ±1°F. The compact outdoor design weighs 42.5 pounds and includes safety protections against freezing and overheating. You get reliable performance with a minimum flow rate of just 0.79 GPM, making it suitable for varied pressure conditions.
Pros
- High 8.1 GPM flow rate for multiple simultaneous uses
- Smart app and wired controller for precise ±1°F accuracy
- Compact 22.48 x 15.51 x 6.54 inch footprint
- Ultra-low 0.79 GPM minimum flow requirement
Cons
- Requires 120V AC power connection for operation
- 2-year warranty is shorter than many competitors
- App control relies on third-party Tuya platform
Good fit if
- You need high flow for whole-house hot water
- You want precise temperature adjustments via smartphone
- You have limited outdoor space for installation
Skip if
- You require a longer than 2-year warranty
- You prefer a dedicated manufacturer app over Tuya
- You lack a 120V AC outlet nearby
Verdict: APUS 8.1 GPM Natural Gas Outdoor Heater offers strong flow and smart control for homes needing reliable outdoor heating, provided you can accommodate its power and warranty terms.
Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
Best for: Outdoor homes needing durable, compact hot water
- 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
This Rinnai unit delivers 7.6 GPM for outdoor natural gas use. It measures 24.6 by 14.1 by 10.8 inches and weighs 53.3 pounds. The non-condensing design suits many climates. You get a 15-year heat exchanger warranty. It fits homes needing steady hot water for multiple fixtures. Check your ground water temperature to ensure optimal performance in your region.
Pros
- 7.6 GPM flow rate supports up to 6 fixtures
- Compact 24.6 x 14.1 x 10.8 inch footprint
- 15-year residential warranty on heat exchanger
- LED screen shows error codes and service reminders
Cons
- WiFi control module sold separately
- Lower flow rate than 8.5 GPM competitors
- Non-condensing design may be less efficient in cold regions
Good fit if
- You need reliable hot water for multiple simultaneous uses
- You have an outdoor installation space with limited width
- You want a brand with a long heat exchanger warranty
Skip if
- You require built-in WiFi connectivity without extra parts
- You need a flow rate above 8.5 GPM
- You are installing indoors without proper venting
Verdict: Rinnai RE199eN 7.6 GPM Outdoor Natural Gas suits homeowners who prioritize durability and compact sizing over maximum flow speed. It is ideal for outdoor setups where a 15-year heat exchanger warranty provides long-term peace of mind.
Westinghouse 8.1 GPM Outdoor Natural Gas Heater
Best for: Outdoor whole-home hot water with precise temp 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 Westinghouse unit delivers 8.1 GPM and 180,000 BTU for outdoor use. It maintains temperature within ±1°F using self-modulating technology. The compact design saves space while supporting 3–5 fixtures. CSA certification ensures safety. You get a 2-year unit warranty and 5-year heat exchanger coverage. It suits households needing reliable outdoor hot water without indoor installation complexity.
Pros
- 8.1 GPM flow rate for whole-home use
- ±1°F temperature stability for consistent showers
- CSA certified for outdoor safety
- Integrated freeze protection for year-round use
- 5-year heat exchanger warranty
Cons
- Shorter 2-year limited warranty on the complete unit compared to industry standards
- Heavier at 42 pounds, requiring sturdy mounting
- Lacks smart home connectivity features
Good fit if
- You need a dedicated outdoor unit for a garage or patio
- You want precise temperature control within ±1°F
- You require CSA certification for outdoor safety compliance
Skip if
- You need indoor installation only
- You want smart app control
- You require more than 8.1 GPM flow rate
Verdict: Westinghouse 8.1 GPM Outdoor Natural Gas Heater is a solid choice for outdoor installations needing precise temperature control. It fits users who prioritize safety certifications and consistent performance over smart features.
Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
Best for: large families needing high-volume hot water
- 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 unit delivers 9.5 GPM at a 35°F rise, making it suitable for whole-house use with three to four simultaneous showers. It features a 199,900 BTU/hr output and a non-condensing design for outdoor installation. The digital LED panel allows precision temperature adjustments within ±1°F. It includes built-in freeze protection and flame failure safety systems. The durable metal cabinet supports wall mounting for residential applications.
Pros
- 9.5 GPM flow rate supports multiple simultaneous showers
- 199,900 BTU/hr high output for whole-house demand
- Digital LED control with ±1°F precision adjustments
- Built-in freeze protection and flame failure safety
- Non-condensing design suitable for outdoor wall mounting
Cons
- Higher 9.5 GPM capacity may be excessive for smaller households
- No WiFi connectivity in this specific 9.5 GPM (No WiFi) variation
- Professional installation is required for gas tankless units
Good fit if
- You need hot water for three to four simultaneous showers
- You require precise temperature control within ±1°F
- You have an outdoor space for wall mounting
Skip if
- You want WiFi connectivity for remote control
- You prefer a DIY-friendly installation process
- You need a smaller unit for limited outdoor space
Verdict: Rheem RTG-95XLN-3 9.5 GPM Outdoor Natural Gas is ideal for large families needing high-volume hot water with precise temperature control. It fits homes with multiple bathrooms and outdoor installation space.
Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
Best for: High-flow outdoor 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 delivers 7.5 GPM of hot water using natural gas. Its compact 14.5-inch width fits tight outdoor spaces. It supports up to six simultaneous appliances. The unit offers flexible venting options. You should choose this if you need high flow for multiple fixtures. It suits homes requiring reliable, continuous hot water without a storage tank.
Pros
- 7.5 GPM flow rate supports up to six appliances
- Compact 14.5-inch width for tight outdoor installations
- Flexible venting options including PVC/CPVC compatibility
- 12-year heat exchanger warranty for long-term durability
Cons
- Larger height and depth than 6.8 GPM competitors
- Professional installation is required for proper setup
- No smart home connectivity or app control listed
Good fit if
- You need high flow for multiple simultaneous showers
- You have outdoor space for a larger unit
- You want a durable unit with a long heat exchanger warranty
Skip if
- You require a compact unit under 15 inches in all dimensions
- You prefer DIY installation without a professional technician
- You want smart home integration or remote control
Verdict: Rinnai RUS75eN 7.5 GPM Outdoor Natural Gas provides superior flow for large households. It fits buyers who prioritize capacity and durability over a small footprint.
Specifications side by side
| Spec | Eccotemp 6.8 GPM Outdoor Natural Gas Water 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 | 6.8 GPM | 8.5 GPM | 8.1 GPM | 9.8 GPM | 8.1 GPM | 9.5 GPM | 7.5 GPM |
| BTU | 140,000 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 | not stated | not stated | 120V AC | not stated | 120V AC | not stated | not stated |
| Temperature Control | 95-140°F | not stated | 95°F–149°F, ±1°F | not stated | 95–158°F, ±1°F | ±1°F | not stated |
| Certification | CSA | not stated | not stated | not stated | CSA | CSA | not stated |
| Dimensions | 7.25 x 14 x 23 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 | not stated | not stated | not stated | not stated | not stated | WiFi | not stated |
| Weight | 39 pounds | 44 pounds | 42.5 pounds | 53.3 pounds | 42 pounds | 39.3 pounds | not stated |
| Color | Black | Gray-NG | Gray | Silver | Grey 81NO | Gray | Outdoor Installation |
| Model | SH22-NG | 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 |
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Frequently asked questions
Which outdoor natural gas water heater offers the highest flow rate?
The Rheem RTG-95XLN-3 provides the highest flow rate at 9.5 GPM. It measures 13.5 by 20.8 by 9.4 inches and weighs 39.3 pounds. This unit suits large families needing high-volume hot water for multiple bathrooms. It includes WiFi connectivity for remote monitoring.
What is the smallest outdoor natural gas water heater by footprint?
The APUS AP-AWH-W26NG has the most compact footprint. Its width and length are both 6.54 inches, with a height of 22.5 inches. It weighs 42.5 pounds and runs on natural gas. This size fits tight outdoor spaces where other units would not fit.
Do any of these models include smart app control?
Yes, the ECCOTEMP SH22-NG and the Rheem RTG-95XLN-3 include WiFi connectivity. The ECCOTEMP model allows for app management and voice control. The Rheem unit also supports remote monitoring. These features help you track energy usage and adjust settings from your phone.
Which unit is best for homes with up to three bathrooms?
The ECCOTEMP SH22-NG is ideal for homes with up to three bathrooms. It delivers 6.8 GPM of hot water. The unit measures 14 by 7.25 by 23 inches and weighs 39 pounds. Its smart features help you manage heating efficiently for multiple fixtures.
Is there a durable option with a long heat exchanger warranty?
The Rinnai REU-VE2737WD-US-N is built for durability. It includes a 15-year heat exchanger warranty for long-term peace of mind. This non-condensing unit measures 14.1 by 24.6 by 10.8 inches and weighs 53.3 pounds. It suits outdoor setups where reliability is key.
Which heater provides precise temperature control for outdoor installations?
The Westinghouse HS180A0G-NG offers precise temperature control. It is designed for outdoor whole-home hot water needs. The unit measures 17.1 by 26.8 by 17.1 inches and weighs 42 pounds. It prioritizes safety certifications and consistent performance over smart connectivity features.