ECCOTEMP 6.8 GPM Indoor Natural or ECCOTEMP 6.8 GPM Outdoor Natural Gas Tankless Water Heater? Which ECCOTEMP Model to Buy
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You are comparing the eccotemp 6 8 gpm indoor natural vs 6 8 gpm outdoor natural gas models. Both units deliver 6.8 GPM of hot water using natural gas. They share similar BTU ratings and CSA certification. The main difference is installation location. One is designed for indoor use with smart features. The other is built for outdoor mounting without venting. Your choice depends on where you plan to install the unit and how much control you want over settings.
Key differences
| Aspect | Eccotemp 6.8 GPM Indoor Natural Gas Water Heater | ECCOTEMP 6.8 GPM Outdoor Natural Gas Tankless Water Heater |
|---|---|---|
| Installation Location | Indoor | Outdoor |
| Smart Features | Mobile app, voice control, Eco Mode | Not listed |
| Venting | Not listed | No venting required |
| Dimensions | 7.25 x 14 x 23 inches | 6 x 15 x 22 inches |
| Color | Black | White |
Which one should you choose?
Choose Eccotemp 6.8 GPM Indoor Natural Gas Water Heater if
- You need an indoor unit with smart app control
- You want to monitor energy usage via mobile
- You prefer voice command integration with Alexa or Google Home
Choose ECCOTEMP 6.8 GPM Outdoor Natural Gas Tankless Water Heater if
- You plan to mount the unit outside
- You want to avoid complex venting installation
- You need a compact unit that saves indoor space
Verdict: Choose the indoor model if you want smart connectivity and precise temperature control inside your home. Pick the outdoor model if you need a vent-free solution for exterior installation. Both provide the same 6.8 GPM flow rate for whole-home use.
Indoor Smart Features vs Outdoor Simplicity
Installation location
The Eccotemp SH22i-NG is designed for indoor installation, fitting into spaces like basements or utility rooms with dimensions of 7.25 x 14 x 23 inches. The Eccotemp 45H-NG is built for outdoor mounting, measuring 6 x 15 x 22 inches. Choosing the right model depends entirely on your available space. If you have limited interior square footage, the outdoor unit frees up room inside your home. If you prefer to keep utility equipment out of sight and protected from weather, the indoor unit is the logical choice. Both models require proper clearance for maintenance, but their placement requirements differ significantly.
Smart home integration
The indoor SH22i-NG model includes SMARTHOME technology, allowing you to control the heater via a mobile app. You can adjust temperatures, set schedules, and monitor energy consumption remotely. It also supports voice commands through Amazon Alexa and Google Home. The outdoor 45H-NG model does not list any smart connectivity features in its specifications. It operates with standard manual controls. If you want to manage your hot water settings from your phone or use voice assistants, the indoor model offers modern convenience. The outdoor unit relies on traditional operation without digital interfaces.
Venting requirements
The outdoor 45H-NG model requires no venting, which simplifies the installation process. You can mount it on an exterior wall without running flue pipes through your roof or walls. The indoor SH22i-NG model typically requires venting to exhaust combustion gases safely, although specific venting materials are not detailed in the provided specs. The lack of venting needs for the outdoor unit can reduce installation complexity and cost. However, the indoor unit is designed for enclosed spaces where proper ventilation is managed through standard gas appliance venting systems. Your existing home infrastructure will dictate which option is easier to install.
Flow rate and capacity
Both units deliver a flow rate of 6.8 GPM using natural gas. This capacity is rated for 3-4 simultaneous applications, making it suitable for standard single-family homes, townhomes, or apartments. The indoor model specifies a temperature range of 95-140°F with a temperature rise of 35°F at 140,000 BTU. The outdoor model also lists 6.8 GPM and 140,000 BTU but does not specify the temperature rise or range in the provided data. For most households, both units provide enough hot water for multiple bathrooms. The performance in terms of volume is identical, ensuring consistent supply for daily tasks.
Dimensions and weight
The indoor SH22i-NG measures 7.25 x 14 x 23 inches and weighs 39 pounds. The outdoor 45H-NG measures 6 x 15 x 22 inches and weighs 38 pounds. The indoor unit is slightly taller but narrower, while the outdoor unit is flatter and wider. The weight difference is negligible at one pound. Both units are compact enough to fit in most utility areas or exterior wall spaces. The outdoor unit’s slightly smaller footprint might be advantageous for tight exterior mounting spots. The indoor unit’s vertical orientation may suit narrow cabinets or closets better. Check your available space against these exact measurements before purchasing.
Which ECCOTEMP 6.8 GPM Model Fits You
Smart home users wanting app control
The SH22i-NG indoor model connects to a mobile app for real-time energy tracking and scheduling. You can adjust temperatures from 95 to 140 degrees Fahrenheit remotely. It supports voice commands via Alexa or Google Home. The Eco Mode reduces energy consumption by up to 25 percent, helping you monitor usage patterns directly from your phone.
Homeowners saving interior space outdoors
The 45H-NG outdoor unit measures 6 x 15 x 22 inches, freeing up indoor square footage. It requires no venting, simplifying installation on exterior walls. The compact design operates quietly, so you barely notice it. It includes a temperature and pressure relief valve and gas shut-off valve for safe outdoor operation.
Renters avoiding permanent modifications
This outdoor model avoids the need for indoor venting or complex gas line modifications typical of indoor units. Its CSA certification covers US and Canadian use, ensuring safety standards. The 6.8 GPM flow rate suits most apartments or townhomes. You get reliable hot water without altering your living space or dealing with indoor noise.
Users needing precise temperature settings
The indoor SH22i-NG offers a precise temperature range of 95 to 140 degrees Fahrenheit. You can set specific temperatures via the smart app or the physical power button. The unit detects error codes and connects to wireless networks for stable operation. This level of control ensures consistent water temperature for multiple bathrooms simultaneously.
The products compared
Eccotemp 6.8 GPM Indoor Natural Gas Water Heater
Best for: Indoor multi-bathroom homes needing smart control
- Fuel Type
- Natural Gas
- Flow Rate
- 6.8 GPM
- BTU
- 140,000 BTU
- Installation Location
- Indoor
- Temperature Control
- 95-140°F
- Certification
- CSA
View on Amazon: Eccotemp 6.8 GPM Indoor Natural Gas Water Heater Affiliate link
This ECCOTEMP SH22i-NG unit delivers 6.8 GPM of hot water at 140,000 BTU. It fits indoor spaces with compact dimensions of 7.25 x 14 x 23 inches. You get precise temperature control from 95 to 140°F. The smart app lets you adjust settings and track energy use. It suits single-family homes needing reliable on-demand heating for multiple bathrooms.
Pros
- 6.8 GPM flow rate supports up to 3 bathrooms
- Smart app control for scheduling and energy tracking
- Voice compatibility with Amazon Alexa and Google Home
- Compact 39-pound design fits tight indoor spaces
Cons
- Indoor installation only, not suitable for outdoor use
- Requires Wi-Fi connection for full smart features
- No remote control included in the package
Good fit if
- You need hot water for multiple bathrooms simultaneously
- You want to monitor energy consumption via a mobile app
- You have limited indoor space for a water heater
Skip if
- You require an outdoor-rated unit for exterior mounting
- You prefer a traditional tank-style water heater
- You do not have a Wi-Fi network for smart features
Verdict: ECCOTEMP 6.8 GPM Indoor Natural Gas Heater offers strong flow rates and smart control for homes needing multi-bathroom support. It fits buyers who want app-based management and voice assistant integration.
ECCOTEMP 6.8 GPM Outdoor Natural Gas Tankless Water Heater
Best for: outdoor natural gas installations
- Fuel Type
- Natural Gas
- Flow Rate
- 6.8 GPM
- Installation Location
- Outdoor
- Certification
- CSA Certified for US and Canadian use
- Dimensions
- 6 x 15 x 22 inches
- Weight
- 38 pounds
View on Amazon: ECCOTEMP 6.8 GPM Outdoor Natural Gas Tankless Water Heater Affiliate link
This ECCOTEMP 45H-NG unit delivers 6.8 GPM of hot water using natural gas. It is designed for outdoor installation, which saves indoor space and requires no venting. The compact white body measures 6 by 15 by 22 inches and weighs 38 pounds. It includes essential safety valves and 3/4-inch NPT fittings. This model is ideal for homes where outdoor placement is possible and convenient.
Pros
- Provides 6.8 GPM flow rate for whole-home use
- Outdoor design eliminates the need for venting
- CSA Certified for safe installation in the US and Canada
- Includes Temperature and Pressure Relief Valve and Gas Shut-Off Valve
Cons
- Requires outdoor installation, limiting placement options
- Heavier at 38 pounds than some indoor competitors
- Lacks smart home connectivity features found in other models
Good fit if
- You have a suitable outdoor wall for mounting
- You want to save indoor space by removing venting requirements
- You need a reliable natural gas unit with 6.8 GPM output
Skip if
- You need an indoor-only installation
- You require smart home app control or remote monitoring
- You prefer a lighter unit for easier handling
Verdict: ECCOTEMP 6.8 GPM Outdoor Natural Gas Heater is a solid choice for homeowners who can place a tankless heater outside. It offers strong flow rates and easy installation without venting, making it a practical solution for specific outdoor setups.
Specifications side by side
| Spec | Eccotemp 6.8 GPM Indoor Natural Gas Water Heater | ECCOTEMP 6.8 GPM Outdoor Natural Gas Tankless Water Heater |
|---|---|---|
| Fuel Type | Natural Gas | Natural Gas |
| Flow Rate | 6.8 GPM | 6.8 GPM |
| BTU | 140,000 BTU | not stated |
| Installation Location | Indoor | Outdoor |
| Temperature Control | 95-140°F | not stated |
| Certification | CSA | CSA Certified for US and Canadian use |
| Dimensions | 7.25 x 14 x 23 inches | 6 x 15 x 22 inches |
| Weight | 39 pounds | 38 pounds |
| Color | Black | White |
| Model | SH22i-NG | 45H-NG |
| Size | not stated | 6.8 GPM |
Frequently asked questions
Can I install the indoor model outside?
No. The SH22i-NG is rated for indoor use only. Placing it outdoors voids the design intent and may cause damage. You must choose the 45H-NG model if your installation site is exposed to weather. The outdoor unit is built to withstand external conditions without additional housing.
Does the outdoor heater need a vent?
The data does not list specific venting requirements for the 45H-NG outdoor model. It is designed for outdoor mounting. You should consult the manufacturer's manual for precise venting instructions. Proper gas line connection is required for both units to operate safely and efficiently.
Which unit is lighter to mount?
The outdoor 45H-NG is slightly lighter. It weighs 38 pounds. The indoor SH22i-NG weighs 39 pounds. The difference is one pound. Both units are relatively compact. You can handle the weight during installation with standard tools and mounting hardware suitable for gas appliances.
What are the dimensions of the outdoor unit?
The outdoor 45H-NG measures 15 inches wide, 6 inches high, and 22 inches long. It is white. These dimensions help you plan your mounting space. Ensure you have clearance for gas lines and exhaust. The compact size fits most exterior walls easily.
Is the indoor unit available in white?
No. The indoor SH22i-NG is listed as black. If you prefer a white unit, you must select the outdoor 45H-NG model. Color does not affect performance. Both models deliver the same 6.8 GPM flow rate. Choose based on color preference and installation location.
Can I use this heater for a garage?
You can use the indoor SH22i-NG in an enclosed garage if it is considered an indoor space. The outdoor model is not suitable for enclosed garages due to weather exposure risks. Check local codes for gas appliance placement. Ensure adequate ventilation in any indoor installation area.