Eccotemp SmartHome Indoor 4.5 GPM Natural Gas Tankless Water Heater, SHLX Series - 1779685967860_82

Eccotemp SmartHome Indoor 4.5 GPM Natural Gas Tankless Water Heater, SHLX Series - 1779685967860_82

Heating water smarter with the Eccotemp Smart Home Indoor 4.5 GPM Natural Gas Tankless Water Heater! With our commitment to advanced technology, this sleek and modern water heater brings cutting-edge solutions to your living space, guaranteeing a continuous hot water supply while conserving both space and energy.

Say goodbye to the inconvenience of running out of hot water mid-shower or during other daily tasks. With a flow rate of 4.5 gallons per minute (GPM), Eccotemp’s SHLX Series can easily meet the hot water demands of a small to medium-sized household, providing a continuous supply of hot water whenever you need it. Enjoy long, luxurious showers, efficient dishwashing, and other hot water needs without interruption.

This Smart Home Indoor Natural Gas Tankless Water Heater is packed with smart features that make your life easier. Imagine living in a home that understands you, controlling your water heater with only your voice. With its Wi-Fi compatibility, this appliance can connect with Amazon Alexa and Google Home for easy voice commands. Wake up to a steaming shower by commanding, "Alexa, set my water heater to 110 degrees." Your warm bath awaits when you arrive home – just tell it, "Ok Google, turn my water heater on."

Use the Eccotemp app to control and monitor your water heater from anywhere. Adjust the temperature, set schedules and timers, see real consumption statistics with an associated dollar amount, and receive maintenance alerts, all at your fingertips. This allows you to customize your hot water usage to match your lifestyle, while also optimizing energy usage and reducing utility bills. 

With our 3-inch vertical and horizontal vent kits (sold separately), setting up this water heater indoors is effortless. Its sleek, wall-hung layout and elegant tempered glass front not only conserve essential floor room but also elevates the aesthetics of your living space.

This Smart Home Tankless Water Heater is not only convenient, but it's also energy efficient. Its advanced heating technology only heats water as it's needed, eliminating standby heat loss and reducing energy waste. This can lead to significant energy savings compared to traditional tank-based water heaters, helping you reduce your carbon footprint and lower your energy bills.

Invest in a smarter and more efficient way to heat your water with our Smart Home Indoor 4.5 GPM Tankless Water Heater. Enjoy endless hot water, convenient control, and energy-efficient operation in your home. Upgrade to a smart water heating solution today and experience the ultimate comfort and convenience of never running out of hot water again! 

The Eccotemp SHLX 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                    

• With a temperature range of 95-140 degrees Fahrenheit and rated for 1-2 applications, this water heater provides on-demand hot showers for up to 2 bathrooms simultaneously. 
• Rated at 4.5 GPM (gallons per minute) at 80,000 BTU 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 SHLX 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. 
• Meticulously crafted, this tankless water heater is designed to endure. The chosen materials offer superior functionality and unmatchable reliability, promising years of dependable service. 
• Easy wall mounting and installation with 110/120-volt UL listed power cord and 1/2 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 SHLX Series will keep you in hot water for years. 
• What's Included: Smart Home 4.5 GPM Indoor Natural Gas Tankless Water Heater (SHLX-NG), Wireless Remote, mounting hardware, and product manual. 

What our Experts Think    

• A compact 4.5 GPM indoor natural gas tankless water heater, designed for small to medium homes, apartments, condos, and cabins with consistent daily hot water demand.
• Delivers up to ~80,000 BTU output, providing efficient on-demand heating without standby energy loss, improving overall energy efficiency versus storage tank systems.
• We like the smart home integration (WiFi + app + Alexa/Google support), allowing remote temperature control, scheduling, and real-time usage monitoring for better convenience and energy management.
• The 4.5 GPM flow rate is well-suited for typical household usage patterns, supporting up to ~1–2 simultaneous hot water applications depending on temperature rise.
• Includes Eco Mode and smart scheduling tools, helping reduce gas consumption by optimizing heating cycles based on real-time demand.
• We value the ultra-compact wall-mounted design, which saves indoor space and fits modern utility closets or tight installation areas.
• Built-in freeze protection and diagnostics system help maintain reliability and simplify troubleshooting via app alerts and error monitoring.
• Designed for energy efficiency through on-demand heating, eliminating standby losses and helping reduce long-term utility costs in smaller households.
• Best suited for users upgrading from a traditional tank heater who want smart control, space savings, and efficient daily hot water performance in a compact footprint.

               
Q&A  

Q: What is the Eccotemp SmartHome Indoor 4.5 GPM Natural Gas Tankless Water Heater (SHLX Series)?
A: It is a compact indoor, wall-mounted tankless water heater that provides on-demand hot water for small to medium homes, using natural gas and smart WiFi controls for remote operation and monitoring.

Q: What is the hot water output capacity?
A: It delivers up to 4.5 GPM (gallons per minute) with up to 80,000 BTU heating power, enough for about 1–2 bathrooms or multiple small household uses at the same time.

Q: Is this a smart water heater?
A: Yes. It supports WiFi connectivity, mobile app control, Eco Mode, scheduling, and compatibility with Alexa and Google Assistant for voice commands and remote adjustments.

Q: What temperature range does it support?
A: The adjustable output range is 95°F to 140°F, allowing flexible comfort settings for showers, sinks, and daily household use.

Q: Is this unit indoor or outdoor?
A: This model is designed for indoor installation only and requires proper venting using compatible 3-inch vent kits.

Q: What type of gas does it use?
A: It runs on natural gas (NG) and is not compatible with propane unless a separate LP model is used.

Q: How many appliances can it run at once?
A: It is best suited for 1–2 simultaneous hot water applications, depending on incoming water temperature and demand. 

                 
Maintenance Tips    

• Install indoors with proper 3-inch venting (horizontal or vertical kit) and keep exhaust fully sealed to prevent CO risk and efficiency loss.
• Perform annual descaling/flush (recommended with EZ-Flush kit) to prevent mineral buildup and maintain heat exchanger performance.
• Keep inlet water pressure stable at ~50–80 PSI for consistent ignition and temperature control.
• Clean the inlet water filter regularly to avoid flow restrictions and error codes.
• Ensure steady natural gas supply (15,000–80,000 BTU range) with correct regulator settings for stable heating.
• Check vent pipes annually for blockages, leaks, or condensation buildup, especially in humid or dusty environments.
• Use the Eccotemp Smart App (WiFi/Alexa/Google integration) to monitor temperature, error codes, and maintenance alerts.
• Inspect ignition system and flame sensor during servicing to prevent startup delays or shutdowns.
• Keep unit exterior clean and dust-free, especially around air intake and control panel for proper airflow.
• Flush system immediately if you notice temperature swings, reduced flow, or inconsistent hot water output.