Smart water heaters with app control offer the convenience of managing your hot water remotely, saving energy, and customizing settings through your smartphone. The best overall pick is the Westinghouse 14kW Tankless Electric Water Heater for its reliable Wi-Fi integration and strong performance. For those on a tighter budget, the Smart Water Heater Timer provides app control without plumbing, ideal for DIY installations. Meanwhile, the Electrolux 14kW WiFi Tankless Heater stands out for its premium build and precise temperature control. Still, tradeoffs include higher costs versus simplicity or compatibility issues. Continue reading for a detailed breakdown of these options and what suits your needs best.
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Key Takeaways
- Top-tier models like Westinghouse excel in reliable Wi-Fi connectivity and consistent performance.
- Budget-friendly options such as the Smart Water Heater Timer offer app control without complex installation.
- Tankless designs dominate for efficiency, but may come with higher upfront costs and installation considerations.
- App usability and compatibility vary significantly, affecting ease of remote management.
- Higher power models often support whole-house use but may require professional installation and electrical upgrades.
| Midea 13KW Electric Tankless Water Heater, 240V, On-demand Hot Water |  | Best Overall for Space-Saving Smart Hot Water | Power: 13KW | Voltage: 240V | Heating System: 18kW smart heating | VIEW ON AMAZON | See Our Full Breakdown |
| 27kW Tankless Electric Water Heater 240V WiFi ETL Certified |  | Best for Medium to Large Households with High Hot Water Demand | Power: 27kW | Voltage: 240V | Flow Rate: 6.5 GPM | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse 14kW Tankless Electric Water Heater, 240V, WiFi, ETL Certified, Gray |  | Best for Compact, Modern Homes with Voice Control | Power: 14kW | Voltage: 240V | Connections: 1/2″ NPT | VIEW ON AMAZON | See Our Full Breakdown |
| Smart Water Heater Timer – Compatible with Alexa, No Plumbing Required |  | Best for Existing Storage Water Heaters with Smart Scheduling | Compatibility: Storage-style water heaters | Safety Certification: UL | Smart Home Integration: Alexa, IFTTT | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse 18kW Electric Tankless Water Heater, Wi-Fi, Whole House Use |  | Best for Whole House Hot Water with Precise Control | Power: 18kW | Voltage: 240V | Flow Rate: 2.6–4.2 GPM | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse 6.5kW Electric Tankless Water Heater with WiFi Control |  | Best for Targeted, Single-Point Use | Power: 6.5kW | Voltage: 240V | Dimensions: 6.9”x8.1”x2.5” | VIEW ON AMAZON | See Our Full Breakdown |
| Midea 13kW Electric Tankless Water Heater with Touch & Wi-Fi Control | | Best for Small Apartments and Smart Flexibility | Power: 13kW | Voltage: 240V | Display: LED | VIEW ON AMAZON | See Our Full Breakdown |
| Electrolux 14kW WiFi Tankless Electric Water Heater 240V, 3.4 GPM |  | Best for Small Households with Voice Control Needs | Power Source: Hard Wiring Required | Special Features: Scale Inhibitor, Smart WiFi & Voice Control | Wattage: 14 KW | VIEW ON AMAZON | See Our Full Breakdown |
| smart water heaters with app | Voltage | Power | Flow Rate | Dimensions |
|---|---|---|---|---|
| Midea 13KW Electric Tankless W | 240V | 13KW | — | — |
| 27kW Tankless Electric Water H | 240V | 27kW | 6.5 GPM | 15.9" H x 13" W x 4.2" D |
| Westinghouse 14kW Tankless Ele | 240V | 14kW | 3.4 GPM | 12.59"H x 9.56"W x 3.28"D |
| Smart Water Heater Timer | — | — | — | — |
| Westinghouse 18kW Electric Tan | 240V | 18kW | 2.6–4.2 GPM | 18.7 x 3.94 x 14.17 inches |
| Westinghouse 6.5kW Electric Ta | 240V | 6.5kW | — | 6.9”x8.1”x2.5” |
| Midea 13kW Electric Tankless W | 240V | 13kW | — | — |
| Electrolux 14kW WiFi Tankless | 240 volts | — | 3.4 gpm | — |
More Details on Our Top Picks
Midea 13KW Electric Tankless Water Heater, 240V, On-demand Hot Water
This Midea model stands out for its compact, wall-mounted design that fits seamlessly into small spaces, making it ideal for apartments or offices. Its 18kW smart heating system ensures instant, continuous hot water, comparable to larger units like the Westinghouse 18kW, but with a focus on space efficiency. Its app control offers remote management, perfect for busy households wanting convenience. The energy-efficient self-modulating technology helps reduce bills, yet the need for a 240V supply and digital controls may present installation challenges for some homeowners. Unlike larger models, this is best suited for modest hot water needs, not for high-demand households.
Pros:- Provides instant and endless hot water on demand
- Smart app control for remote management
- Energy-efficient with self-modulating technology
- Compact and space-saving design
Cons:- Requires 240V power supply, possibly needing professional installation
- Limited capacity for high-demand households
Best for: Small households or apartments needing space-saving, app-controlled hot water with moderate demand
Not ideal for: Large families or homes with high simultaneous hot water needs, due to its limited capacity
- Power:13KW
- Voltage:240V
- Heating System:18kW smart heating
- Control:Smart App Control, Digital Touch Panel
- Design:Wall-mounted, Space-saving
Our verdict“This model suits users prioritizing space efficiency and moderate hot water needs with smart control features.”
27kW Tankless Electric Water Heater 240V WiFi ETL Certified
Compared to the smaller Midea, this 27kW unit delivers a higher flow rate (6.5 GPM) suitable for larger households with multiple fixtures running simultaneously. Its smart flow control and WiFi remote management make it a standout for those needing reliable, continuous hot water. The compact wall-mounted design simplifies installation, but it demands a 200A or higher electrical service, and professional setup is strongly advised—unlike simpler DIY-friendly models. While it excels in capacity and energy efficiency, its complexity and electrical requirements limit accessibility for some users. This unit is well-suited for families or small businesses with high hot water demands but not for users with limited electrical capacity.
Pros:- Provides continuous hot water for multiple outlets
- Energy-efficient with smart self-modulating technology
- Space-saving wall-mounted design
- WiFi app control for remote management
Cons:- Requires professional installation and specific electrical setup
- Limited suitability for homes with lower electrical capacity
Best for: Households with high hot water use requiring remote control and fast, continuous supply
Not ideal for: Homeowners with basic electrical setups or minimal hot water needs, due to installation complexity
- Power:27kW
- Voltage:240V
- Flow Rate:6.5 GPM
- Water Connections:3/4″ NPT
- Dimensions:15.9″ H x 13″ W x 4.2″ D
- Safety Certifications:ETL
Our verdict“This model makes the most sense for larger households seeking high capacity and remote management, provided electrical requirements are met.”
Westinghouse 14kW Tankless Electric Water Heater, 240V, WiFi, ETL Certified, Gray
This Westinghouse model excels in quick hot water delivery, supporting up to 3.4 GPM at typical inlet temperatures, making it ideal for small to medium homes. Its WiFi and voice control compatibility with Alexa and Google Home cater to tech-savvy users wanting seamless integration. Its compact size (12.59″H x 9.56″W x 3.28″D) saves space, but it requires a dedicated 60A double-pole breaker and 6 AWG wiring, which could pose challenges during installation. Compared with the 27kW unit, this is less powerful but more adaptable for limited spaces and lower demand scenarios. Maintenance is straightforward but necessary every 6 months to ensure safety and performance.
Pros:- Delivers hot water in just 3 seconds
- WiFi and voice control compatibility
- Compact, space-efficient design
- ETL certified with multiple safety features
Cons:- Requires dedicated 60A breaker and special wiring
- Limited flow rate for larger households
Best for: Modern homeowners seeking quick, reliable hot water with smart voice control in limited spaces
Not ideal for: Large families or homes with high simultaneous hot water needs, due to flow rate limitations
- Power:14kW
- Voltage:240V
- Connections:1/2″ NPT
- Flow Rate:3.4 GPM
- Dimensions:12.59″H x 9.56″W x 3.28″D
- Certifications:ETL
Our verdict“This unit suits tech-oriented homeowners needing fast, space-saving hot water with voice commands, but not for high-demand situations.”
Smart Water Heater Timer – Compatible with Alexa, No Plumbing Required
This device is ideal for users who already have a storage-style water heater and want to add smart scheduling and control without replacing their system. It learns your hot water usage patterns, saving energy and offering remote control via an app. Its compatibility with Alexa and IFTTT enhances automation, and installation is straightforward since it involves no plumbing modifications. However, it relies heavily on smart device connectivity and the optional leak sensor for leak alerts, which could be a limitation. Its features are best appreciated by those seeking energy savings and convenience, rather than high-performance instant hot water solutions.
Pros:- Easy to install without plumbing modifications
- Remotely control and schedule hot water
- Provides energy savings and usage insights
- Includes maintenance and leak alerts
Cons:- Requires optional leak sensor for leak detection
- Limited to storage-style water heaters
Best for: Homeowners with storage water heaters wanting smart scheduling and energy management
Not ideal for: New installations or homes seeking instant hot water, as it only controls existing tanks
- Compatibility:Storage-style water heaters
- Safety Certification:UL
- Smart Home Integration:Alexa, IFTTT
- Features:Schedule learning, remote control, energy savings
Our verdict“This smart timer is perfect for enhancing existing storage water heaters with automation and energy savings, but not for instant hot water needs.”
Westinghouse 18kW Electric Tankless Water Heater, Wi-Fi, Whole House Use
This 18kW model offers a powerful, whole-house solution with a flow rate ranging from 2.6 to 4.2 GPM, making it suitable for average-sized homes. Its Wi-Fi control, compatible with Alexa and Google Home, provides precise temperature adjustments via an LED display—more refined than the basic controls of the 14kW Westinghouse. Its larger size (18.7 x 3.94 x 14.17 inches) and 75A electrical requirement mean professional installation is recommended, unlike simpler plug-and-play models. Compared to the 14kW version, it is better suited for larger homes but demands more robust electrical infrastructure. Its flow rate can vary with inlet temperatures, so performance may fluctuate in colder climates.
Pros:- Wi-Fi control compatible with Alexa and Google
- Precise temperature adjustment with LED display
- Suitable for whole-house hot water
- ETL certified with multiple safety features
Cons:- Requires professional installation and a 75A breaker
- Flow rate varies with inlet temperature
Best for: Homeowners needing reliable, whole-house hot water with smart control and precise temperature tuning
Not ideal for: Homes with limited electrical capacity or requiring very high flow rates for simultaneous fixtures
- Power:18kW
- Voltage:240V
- Flow Rate:2.6–4.2 GPM
- Temperature Range:86–140°F
- Dimensions:18.7 x 3.94 x 14.17 inches
- Installation Requirements:75A breaker, 0.5–4.2 GPM flow, 3/4″ NPT
Our verdict“This unit is ideal for homeowners seeking whole-house control with precise temperature management, provided electrical capacity is available.”
Westinghouse 6.5kW Electric Tankless Water Heater with WiFi Control
This compact Westinghouse model excels at providing instant hot water for a single sink or vanity, making it ideal for small spaces where only one fixture needs quick access. Compared to the larger Electrolux 14kW unit, it’s more energy-efficient for focused tasks, but it’s limited to single-point applications and can’t support multiple fixtures simultaneously. The WiFi control allows remote temperature adjustments, adding convenience for minor updates without physical access. However, its small capacity and need for professional installation mean it’s not suitable for whole-home use or high-demand scenarios. Overall, this pick makes the most sense for individuals seeking quick, targeted hot water with remote control in a compact form.
Pros:- Provides instant hot water for sinks and vanities
- Smart WiFi control for remote operation
- Compact size fits under most sinks
Cons:- Not suitable for showers or multiple fixtures
- Requires professional installation
Best for: Homeowners with a dedicated sink or vanity that requires instant hot water, especially in small spaces
Not ideal for: Households needing hot water for multiple fixtures or whole-house heating, due to its limited capacity
- Power:6.5kW
- Voltage:240V
- Dimensions:6.9”x8.1”x2.5”
- Water Temperature Range:80°F-130°F
- Waterproof Rating:IPX4
- Warranty:1 year
Our verdict“This model is best for individuals seeking a compact, remote-controlled hot water solution for a single point of use.”
Midea 13kW Electric Tankless Water Heater with Touch & Wi-Fi Control
The Midea 13kW model offers a significant upgrade over smaller units like the Westinghouse 6.5kW by providing enough hot water for small apartments or condos, with the added benefit of a touch panel and Wi-Fi app for easy control. Compared to the Electrolux 14kW model, it’s slightly less powerful but more accessible for typical residential wiring, making installation simpler in many settings. Its automatic power modulation helps optimize energy use, while the child mode adds safety for families. However, its limited capacity means it’s not suitable for larger households or multiple simultaneous fixtures, and reliance on Wi-Fi connectivity can be a drawback if the network is unstable. This pick is ideal for tech-savvy renters or small households prioritizing smart features and space savings.
Pros:- Provides instant, endless hot water without preheating
- Smart app control for remote temperature adjustments
- Space-saving wall-mounted design
Cons:- Requires 240V power supply, may not suit all homes
- Limited capacity for multiple fixtures
Best for: Small apartment dwellers or couples who want reliable, smart hot water without high capacity demands
Not ideal for: Larger families or homes with multiple bathrooms, due to its limited flow rate and capacity
- Power:13kW
- Voltage:240V
- Display:LED
- Control:Touch & Wi-Fi
- Child Mode:Yes
- Material:White
Our verdict“This model suits small households desiring a smart, space-efficient hot water solution with easy remote control.”
Electrolux 14kW WiFi Tankless Electric Water Heater 240V, 3.4 GPM
The Electrolux 14kW heater stands out for its ability to deliver hot water instantly to 1-2 fixtures, making it well-suited to small households or vacation homes. Its compatibility with WiFi and Alexa offers a hands-free, voice-enabled experience, unlike smaller units that rely solely on app control. The self-modulating technology helps conserve energy, and its compact design fits neatly into tight spaces. However, its flow rate limits it to a maximum of 3.4 GPM, so larger homes or multiple simultaneous outlets may find it insufficient. Installation can be complex, requiring a 240V/60A breaker and professional wiring, which might add to the overall cost. This product is perfect for small households wanting voice control and efficient hot water for a couple of fixtures.
Pros:- Instant hot water in just 3 seconds
- WiFi and Alexa compatibility for remote and voice control
- Energy-efficient with up to 99.8% thermal efficiency
Cons:- Requires professional electrical wiring and a 240V/60A breaker
- Limited to 1-2 fixtures, not suitable for larger households
Best for: Small households or vacation homes that want smart voice control and reliable hot water for 1-2 fixtures
Not ideal for: Large families or homes with multiple bathrooms, due to flow rate limitations and installation complexity
- Power Source:Hard Wiring Required
- Special Features:Scale Inhibitor, Smart WiFi & Voice Control
- Wattage:14 KW
- Voltage:240 volts
- Flow Rate:3.4 gpm
- Maximum Temperature:140 °F
- Material Type:Copper
Our verdict“This heater is ideal for small households seeking voice-enabled hot water control with energy efficiency, but not for high-demand homes.”
How We Picked
We evaluated these smart water heaters based on several critical factors: performance reliability, app usability and features, build quality, ease of installation, and overall value. Devices needed to have seamless Wi-Fi connectivity, user-friendly apps, and good integration with smart home systems. We also considered energy efficiency, durability, and customer reviews to ensure real-world performance. The ranking reflects a balance between affordability and premium features, prioritizing models that deliver consistent remote control and long-term reliability over gimmicks or unproven tech.Factors to Consider When Choosing Smart Water Heaters With App
Choosing the right smart water heater with app control involves understanding key features and how they influence your daily use. Not all models are equal in terms of installation complexity, energy efficiency, or smart home compatibility. Being aware of these factors helps avoid common pitfalls like overpaying for features you don’t need or selecting a model incompatible with your existing smart devices. This guide highlights four essential considerations to help you make an informed decision and select a unit that offers the best blend of convenience, performance, and value.Performance and Capacity
Assess your household’s hot water needs before choosing a model. Tankless heaters are favored for their efficiency and space-saving design, but they vary in flow rate and power. Higher wattage units support larger households or whole-house use, while lower wattage models are suited for small apartments or single fixtures. Understanding your demand prevents underperformance and unnecessary upgrades later. Keep in mind that higher-capacity models may require a dedicated circuit and professional installation, adding to initial costs.
App Usability and Integration
Not all apps are created equal; some offer detailed control and scheduling, while others are basic remote switches. Check for compatibility with your smartphone’s operating system and smart home ecosystems like Alexa or Google Assistant. An intuitive app reduces setup time and daily management hassle. Beware of models with buggy or limited apps that diminish the convenience of remote control, especially if you expect to adjust settings frequently or integrate with existing smart home routines.
Installation and Compatibility
Proper installation is vital for optimal performance and safety. Some units are plug-and-play with no plumbing required, suitable for retrofit or smaller spaces, while others demand professional hookup to your existing plumbing and electrical systems. Consider your home’s wiring capacity, especially for high-wattage models, to avoid costly upgrades. Compatibility with your current fixtures and home setup can influence long-term satisfaction and maintenance costs.
Build Quality and Durability
Investing in a well-built model can prevent frequent repairs and replacements. Look for units with corrosion-resistant components and reputable brand warranties. Cheaper models may cut corners on materials, leading to shorter lifespan or reliability issues. Balancing initial cost with expected durability ensures your investment lasts and performs well over time, especially if you live in an area with fluctuating power or water conditions.
Budget and Long-term Value
While premium models offer advanced features and better integration, they come at a higher price. Conversely, budget options might lack some conveniences but still provide reliable app control. Consider your long-term savings from energy efficiency and convenience versus upfront costs. Sometimes paying more upfront results in lower operating costs or enhanced smart features, which can be worthwhile for busy households or tech enthusiasts.
Frequently Asked Questions
Can I install a smart water heater myself?
Many smart water heaters, especially plug-and-play models, are designed for DIY installation, but proper electrical and plumbing connections are essential for safety and performance. If you lack experience with electrical wiring or plumbing, hiring a professional is recommended. Proper installation ensures the unit works efficiently and helps avoid voiding warranties. Always follow manufacturer instructions and local codes for safe operation.
Will my smart water heater work with Alexa or Google Assistant?
Most top-rated models in this category support integration with popular voice assistants like Alexa and Google Assistant. Compatibility depends on the specific app and device, so check the product specifications carefully. Proper setup usually involves linking your water heater’s app to your smart home ecosystem, enabling voice control and automation. Be aware that some cheaper or less popular models might lack these integrations or have limited functionality.
How energy-efficient are these smart water heaters?
Smart water heaters generally promote energy savings by allowing precise temperature control and scheduling. Tankless models typically reduce standby energy loss compared to traditional tanks. However, efficiency varies based on wattage, insulation, and usage patterns. Investing in a higher-end model with better insulation and smart features can lead to noticeable savings on utility bills over time, especially in households with variable hot water demands.
Are smart water heaters safe to use with smart home systems?
Yes, most modern units are designed with safety in mind and include features like auto shutoff and leak detection. When integrated properly with your smart home system, they can enhance safety by alerting you to issues remotely. However, compatibility and security depend on the quality of the device and app, so choosing reputable brands and keeping software updated is critical. Proper installation by a professional also minimizes safety risks.
What’s the typical lifespan of a smart water heater?
With proper maintenance, most smart water heaters last around 10-15 years, similar to traditional models. Higher-quality units with durable materials tend to last longer and may include better warranties. Regular flushing, checking electrical connections, and updating firmware help prolong their lifespan. Investing in a trusted brand and following manufacturer guidelines can maximize your unit’s longevity and reliability.
Conclusion
For those seeking a dependable, all-around solution, the Westinghouse 14kW Tankless Electric Water Heater offers excellent performance with robust app control and smart features, making it ideal for most households. Budget-conscious buyers will appreciate the simplicity and affordability of the Smart Water Heater Timer, especially for smaller or retrofit setups. Tech enthusiasts wanting premium features and seamless integration should consider the Electrolux WiFi Tankless Heater, which combines durability with advanced smart controls. Ultimately, your choice depends on your household size, technical comfort, and budget—select the option that best fits your specific needs.
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