Eccotemp SmartHome Indoor 4.0 GPM Natural Gas Tankless Water Heater, SH12-A Series - 1779686027025_256

Eccotemp SmartHome Indoor 4.0 GPM Natural Gas Tankless Water Heater, SH12-A Series - 1779686027025_256

Heating water smarter with the Eccotemp Smart Home Indoor 4.0 GPM Natural Gas Tankless Water Heater! Leveraging the latest in technological innovation, this water heater not only ensures an uninterrupted flow of hot water but also optimizes your space and energy usage for a smarter, more efficient home.

Say goodbye to running out of hot water during peak usage times or adjusting water temperature manually. This Smart Home Tankless Water Heater is equipped with Wi-Fi connectivity, allowing you to control and monitor your water heater remotely using your smartphone or pair with Amazon Alexa and Google Home to access voice commands. Set customized schedules, adjust temperature settings, view real consumption statistics, and receive maintenance alerts with ease, giving you full control over your hot water supply from anywhere, anytime.

Featuring a powerful flow rate of 4.0 gallons per minute (GPM), this tankless water heater is perfect for small to medium-sized households, providing a continuous and uninterrupted supply of hot water for all your needs. Enjoy long showers, efficient dishwashing, and other hot water demands without any interruptions, making your daily routines more convenient and enjoyable.

This Tankless Water Heater is not just smart, but also energy efficient. Its advanced heating technology only heats water as it's needed, eliminating the standby heat loss that occurs with traditional tank-based water heaters. This results in significant energy savings, reducing your utility bills and lowering your environmental footprint.

Installation is simple and hassle-free, making it a great option for any home. Its compact and sleek design allows for easy installation in tight spaces, saving valuable floor space in your home.

Upgrade to a smarter and more efficient water heating solution without breaking the bank. This budget-friendly tankless water heater delivers functionality and performance by providing the convenience of smart controls, an endless hot water supply, and energy-efficient operation. Start experiencing the ultimate in comfort and convenience today!

The Eccotemp SH12-A Series has been CSA tested and approved for US & Canada at elevations up to 2000 feet. Installation and use above 2000 feet may affect overall product efficiency and performance.

All purchases valued at $75 or above will be shipped with SIGNATURE REQUIRED. If you wish to remove the SIGNATURE REQUIRED please contact Customer Service. Please Note: By opting out of SIGNATURE REQUIRED, you release Eccotemp from all liability of lost or stolen packages. Call 1-866-356-1992 or chat with us to speak with a customer service agent.

Features                    

• Temperature range of 95-140 degrees Fahrenheit and rated for 1-2 applications.
• Rated at 4.0 GPM (gallons per minute) at 80,000 BTUs with a temperature rise of 35 degrees, this ultra-efficient tankless hot water heater is ideal for smaller single-family homes, townhomes, condos, cabins, apartments, or light commercial use.
• Enjoy real-time control over your home's water heating needs. Use the Eccotemp mobile app to track energy consumption, adjust temperatures, set schedules, or even detect product and network errors. Unlock substantial savings with our Eco Mode feature, a smart solution that can help you reduce energy consumption by up to 25%. If your incoming water is set at a higher temperature than needed, simply use your phone to adjust the settings, aiding in lower utility usage, such as gas.
• Experience the convenience of our versatile smart app settings that display your desired currency (USD/CAD), dual-mode Fahrenheit and Celsius temperature readings, and preferred gas measurement unit, offering a personalized understanding of your usage.
• Seamlessly connect with Amazon Alexa or Google Home for voice command functions like: "Alexa, set my water heater to 110 degrees" or "Hey Google, switch off my water heater."
• Smart Power Button feature turns your model on or off, detects error codes, connects to wireless networks, and enables sleep mode to prevent unnecessary energy use - all with a simple touch.
• The SH12-A Series can be complemented with our patented, one-of-a-kind EZ-Flush Descaling Kit to ensure your tankless water heater is running at maximum efficiency all year long.
• Easy wall mounting and installation with 120-Volt UL listed power cord and ½-inch NPT water and gas connections.
• Indoor venting is available in 3-inch horizontal and vertical installation kits (sold separately).
• CSA certified for installation in the US and Canada.
• Limited Manufacturer Warranty (Heat Exchanger: 5 Years, Components: 2 Years, Parts/Accessories: 30 Days), live chat, and self-help guides provide peace of mind, assuring that the Eccotemp SH12-A Series will keep you in hot water for years.
• What's Included: Smart Home 4.0 GPM Indoor Natural Gas Tankless Water Heater (SH12-A-NG), 1 x Hardware Pack, 1 x Product Manual.
  
  

What our Experts Think  

• Smart, space-saving indoor hot water solution — The SH12-A Series delivers 4.0 GPM of continuous hot water with a compact wall-mounted design, making it a strong fit for small to medium homes, apartments, and cabins where space efficiency matters.
• Connected “smart home” control is a key advantage — Built-in WiFi allows full remote control via smartphone, including temperature adjustment, scheduling, energy tracking, and maintenance alerts, with optional Alexa and Google Home integration.
• Efficient on-demand heating reduces waste — The system heats water only when needed, eliminating standby energy loss common in storage tanks and helping reduce gas consumption over time.
• Consistent performance for everyday household use — Rated at ~80,000 BTU, it reliably supports 1–2 simultaneous hot water applications like showers, sinks, or dishwashing under typical residential demand conditions.
• Energy-saving modes improve operating cost — Eco Mode and scheduling features help fine-tune usage patterns, potentially lowering overall gas consumption by optimizing temperature control and idle operation.
• Compact, easy-to-install footprint — Lightweight and small form factor design makes it suitable for retrofit installations in tight utility spaces, closets, or utility rooms.
• Things to consider before buying — Best suited for modest household demand; not designed for high-flow simultaneous multi-bathroom usage or hydronic/floor heating systems, and professional installation is recommended for safety and compliance.

                 
Q&A  

Q: What is the Eccotemp SmartHome SH12-A 4.0 GPM tankless water heater?
A: It is a compact indoor natural gas tankless water heater that provides continuous hot water on demand with a 4.0 GPM flow rate, designed for small to medium households.

Q: What type of fuel does it use?
A: It runs on natural gas (NG) and uses an 80,000 BTU heating system for efficient on-demand water heating.

Q: Does it support smart controls?
A: Yes. It includes Wi-Fi connectivity with app control, allowing users to adjust temperature, set schedules, monitor usage, and receive maintenance alerts remotely.

Q: Can it be controlled with voice assistants?
A: Yes. It is compatible with Amazon Alexa and Google Home for voice commands like adjusting temperature or turning the unit on/off.

Q: What is the ideal household size for this heater?
A: It is best suited for small to medium homes, condos, cabins, and apartments with moderate hot water demand.

Q: What temperature range does it support?
A: It typically operates in the range of about 95°F to 140°F, allowing flexible household hot water settings.

Q: Is it energy efficient?
A: Yes. It heats water only when needed, reducing standby energy loss compared to traditional tank water heaters.

Q: Does it require professional installation?
A: Yes. Professional installation is recommended due to gas, venting, and safety requirements for indoor use.

                 
Maintenance Tips

• Install indoors only in a well-ventilated, dry area to prevent corrosion and venting issues.
• Flush the system periodically using a descaling kit to remove mineral buildup and maintain heating efficiency.
• Inspect gas, water, and power connections every 3–6 months for leaks, looseness, or wear.
• Clean inlet filters and strainers to maintain steady water flow (4.0 GPM rated performance).
• Keep venting system clear and properly installed to avoid error codes and combustion issues.
• Monitor performance via the smart app (WiFi control + diagnostics) for early fault detection.
• Maintain inlet water pressure within recommended range for stable ignition and temperature control.
• Avoid freezing conditions; ensure unit is protected even with built-in freeze protection.
• Schedule annual professional servicing for burner inspection and safety optimization.