7 bestSmart Switch For Water Heaterof July 2025
112M consumers helped this year.
1
DEWENWILS Pool Timer, WiFi Pool Pump Timer, Heavy Duty 40A 120-277 VAC 2HP Wireless Controller Timer for Pool, Water Heater, Works with Alexa, Google Assistant, Smart Life, ETL Listed
Dewenwils
9.9
2
DEWENWILS Outdoor Smart Wi-Fi Outlet Box, Heavy Duty 40A 120VAC 2HP Wireless Controller Timer Switch for Pool Water Heater SPA, Compatible with Smart Phone, Alexa, UL Listed
Dewenwils
9.8
3
Calypso - Smart Water Heater Controller RM3500ZB - Zigbee (Hub Required)
Sinopé
9.6
4
Suraielec WiFi Pool Timer, Outdoor Indoor Smart Switch, 40 AMP, 2HP, 120, 240, 277 VAC, Heavy Duty Pool Controller Light Timer Box for Pool Pump, Water Heater, Spa, Powerful Electrical Appliances
SURAIELEC
9.4
5
Intermatic WH40 250 Volt Water Heater Timer - Convenient External Override Switch - Dual Electric Rates for Efficient Usage
Intermatic
9.1
6
Intermatic WH21 Electric Water Heater Timer
Intermatic
8.8
7
SMATRUL Smart Water Heater Switch with USB C Port, 20A Smart Switch Compatible with Alexa, WiFi Smart Touch Switch with Fluorescent Strip Design, Manual Countdown,Timing, Memory Functions (Black)
SMATRUL
8.5
A Guide to Selecting the Best Smart Switch For Water Heater
Choosing a smart switch for your water heater can make your home more energy-efficient and convenient. A smart switch allows you to control your water heater remotely, set schedules, and monitor usage, all from your smartphone or through voice assistants. When picking the right smart switch, it's important to consider how it will fit into your existing setup, what features you need, and how easy it is to use and install. Understanding the key specifications will help you make a choice that matches your lifestyle and ensures safe, reliable operation.
Load Capacity (Amperage/Voltage)
Load capacity refers to the maximum amount of electrical current and voltage the smart switch can handle safely. This is crucial because water heaters typically draw a lot of power, and using a switch with too low a capacity can be dangerous or cause the switch to fail. Load capacity is usually listed in amps (A) and volts (V). For smaller water heaters, a lower capacity switch may suffice, but for larger or high-powered heaters, you'll need a switch rated for higher loads. Always check your water heater's power requirements and choose a switch that meets or exceeds those numbers to ensure safety and reliability.
Compatibility (Wiring and Heater Type)
Compatibility means whether the smart switch can work with your specific water heater and home wiring. Some switches are designed for tankless heaters, while others work with traditional tank models. Additionally, your home's wiring (single-phase or three-phase) and the type of switch (single-pole or double-pole) matter. Before buying, check your water heater's specifications and your electrical setup. If you're unsure, consult an electrician or look for switches that clearly state compatibility with your heater type and wiring.
Control Options (App, Voice, Manual)
Control options describe how you can operate the smart switch. Most offer app control via your smartphone, some integrate with voice assistants like Alexa or Google Assistant, and many still allow manual operation through a physical button. If you want to automate your water heater or control it remotely, look for app and voice compatibility. If you prefer simple, on-the-spot control, make sure manual operation is available. Think about how you and your household will use the switch day-to-day to decide which control methods are most important.
Scheduling and Automation Features
Scheduling and automation features let you set specific times for your water heater to turn on or off, or create routines based on your daily habits. This can help save energy and ensure hot water is available when you need it. Some switches offer basic timers, while others allow for more advanced automation, like linking to your home's occupancy sensors or weather data. If you have a regular routine, basic scheduling may be enough. If you want more flexibility or integration with other smart devices, look for advanced automation features.
Safety Features (Overload Protection, Certifications)
Safety features are built-in protections that prevent electrical hazards, such as overload protection, surge protection, and certifications from recognized safety organizations. These features are important because water heaters use a lot of power, and a malfunctioning switch could be dangerous. Overload protection automatically shuts off the switch if it detects too much current, while certifications (like UL or CE) indicate the product has been tested for safety. Always prioritize switches with strong safety features, especially if you have children or pets at home.
Installation Requirements
Installation requirements refer to how easy or difficult it is to set up the smart switch. Some switches are designed for DIY installation and come with clear instructions, while others may require professional help, especially if your electrical system is complex. Consider your comfort level with electrical work and whether you have the necessary tools. If you prefer a hassle-free experience, look for switches marketed as easy to install or that offer customer support. If you're not confident, it's always safest to hire a professional.
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