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Ecobee3 Lite vs. Ecobee Smart Thermostat: Which One Should You Choose?

Smart thermostats have become an essential upgrade for modern homes, offering improved energy efficiency, convenience, and comfort. Among the top contenders in this market are the Ecobee3 Lite and the Ecobee Smart Thermostat with Voice Control. While both devices come from the same manufacturer and share some similarities, they cater to different user needs and budgets. In this blog, we’ll dive into a detailed comparison of the Ecobee3 Lite and the Ecobee Smart Thermostat to help you decide which one is the perfect fit for your home.


ecobee 3 lite vs ecobee smart thermostat

Ready to buy? Explore the ecobee3 Lite and ecobee Smart Thermostat on Amazon.

Key Features at a Glance

Featureecobee3 Liteecobee SmartThermostat
CompatibilityiOS, Android, Siri, Alexa, Google AssistantiOS, Android, Siri, Alexa, Google Assistant
Built-in Voice ControlNoYes
SmartSensor IntegrationOptionalIncluded
ENERGY STAR CertifiedYesYes
Remote Control via AppYesYes
Occupancy SensorNoYes
HVAC System CompatibilityMost 24VAC systemsMost 24VAC systems
Power Extender Kit for C-Wire-lessIncludedIncluded
Display SizeStandardLarger
Audio and Alexa Built-InNoYes
Setup Assistance via AppYesYes

Ready to buy? Explore the ecobee3 Lite and ecobee Smart Thermostat on Amazon.

Design and Build

Ecobee3 Lite:

The Ecobee3 Lite is designed to be sleek and minimalistic, with a compact 4.05-inch square face and a 1-inch depth. It’s a perfect choice for those who prefer a clean, modern look. The touchscreen interface is intuitive and user-friendly, providing essential information like temperature, humidity, and weather at a glance.

Ecobee Smart Thermostat with Voice Control:

The Ecobee Smart Thermostat builds on the aesthetic of the Ecobee3 Lite with a slightly larger display at 4.29 inches. The added size makes it easier to view details from across the room. Its premium design includes a more robust touchscreen experience and integrates a high-quality speaker for voice control features, offering a polished, futuristic feel.

Winner: Ecobee Smart Thermostat—its larger display and integrated speaker make it the more premium-looking device.


Installation Process

Both thermostats are designed with DIY installation in mind, and Ecobee’s app simplifies the process with interactive step-by-step guidance.

Ecobee3 Lite:

The Ecobee3 Lite’s app-based installation guide is exceptional, catering to users with varying levels of experience. Simply input the wiring configuration from your old thermostat, and the app provides tailored instructions. Homes without a common (C) wire can use the included Power Extender Kit.

Ecobee Smart Thermostat:

The installation process for the Ecobee Smart Thermostat is equally straightforward. Like the Ecobee3 Lite, it includes a Power Extender Kit for homes without a C wire. However, it may take slightly longer due to additional features like the built-in occupancy sensor and voice control setup.

Winner: Tie—both devices offer an intuitive installation process with excellent app support.


Ready to buy? Explore the ecobee3 Lite and ecobee Smart Thermostat on Amazon.

Smart Home Integration

Ecobee3 Lite:

The Ecobee3 Lite integrates seamlessly with major smart home platforms, including Alexa, Google Assistant, and Apple HomeKit. While it does not have built-in voice control, pairing it with a compatible smart speaker unlocks this functionality.

Ecobee Smart Thermostat:

The Ecobee Smart Thermostat goes a step further with built-in Alexa and Siri. You can control your thermostat, play music, check the weather, and more without needing an additional smart speaker. The device also supports IFTTT and SmartThings, making it an excellent choice for advanced smart home setups.

Winner: Ecobee Smart Thermostat—its built-in voice control provides more convenience and functionality.


Energy Efficiency and Savings

Ecobee3 Lite:

The Ecobee3 Lite helps users save up to 23% annually on heating and cooling costs. It achieves this by leveraging geofencing, scheduling, and manual adjustments through the app. For enhanced energy efficiency, users can add optional SmartSensors to manage hot or cold spots.

Ecobee Smart Thermostat:

The Ecobee Smart Thermostat boasts up to 26% annual energy savings. Its built-in occupancy sensor adjusts temperatures automatically based on room usage, ensuring no energy is wasted heating or cooling unoccupied spaces. Additionally, the included SmartSensor extends its energy-saving capabilities to specific rooms.

Winner: Ecobee Smart Thermostat—its advanced sensors and features offer slightly higher energy savings.


Features and Functionality

Ecobee3 Lite:

  • Mobile App: The app is intuitive and easy to use, allowing remote control and scheduling from anywhere.
  • SmartSensor Compatibility: Add SmartSensors for better temperature control in individual rooms (sold separately).
  • Basic Controls: Provides essential thermostat functions without overwhelming users.

Ecobee Smart Thermostat:

  • Voice Control: Built-in Alexa and Siri provide hands-free operation.
  • Occupancy Sensor: Automatically adjusts settings based on whether a room is occupied.
  • Advanced Features: Includes vacation mode, geofencing, and more detailed scheduling options.
  • Speaker: The integrated speaker supports voice commands and plays audio, adding versatility.

Winner: Ecobee Smart Thermostat—it offers more advanced features, making it a better choice for tech enthusiasts.


Compatibility and Connectivity

Both thermostats are compatible with most 24VAC HVAC systems, including:

  • Furnaces
  • Air conditioners
  • Heat pumps (with up to two-stage AUX heating)
  • Boilers

Connectivity options include Wi-Fi (2.4 GHz) and support for dynamic or static IP addressing with SSL encryption. The Ecobee Smart Thermostat’s additional SmartSensor is included in the box, while the Ecobee3 Lite requires separate purchase.

Winner: Ecobee Smart Thermostat—the included SmartSensor adds value and functionality.

Ready to buy? Explore the ecobee3 Lite and ecobee Smart Thermostat on Amazon.


Value for Money

Ecobee3 Lite:

Priced at $149.99, the Ecobee3 Lite is a budget-friendly entry into the world of smart thermostats. It offers essential features and optional upgrades, making it a great choice for users who want energy efficiency without breaking the bank.

Ecobee Smart Thermostat:

At $249.99, the Ecobee Smart Thermostat is more expensive, but it justifies its price with built-in voice control, an occupancy sensor, and advanced features. It’s ideal for tech-savvy users looking for a fully integrated smart home device.

Winner: Depends on your needs—choose the Ecobee3 Lite for affordability or the Ecobee Smart Thermostat for premium features.


Pros and Cons

Ecobee3 Lite:

Pros:

  • Affordable price point
  • Sleek, compact design
  • Easy installation and setup
  • Compatible with most HVAC systems
  • Works with major smart home platforms

Cons:

  • No built-in voice control
  • Optional SmartSensors sold separately

Ecobee Smart Thermostat:

Pros:

  • Built-in Alexa and Siri
  • Advanced energy-saving features
  • Includes SmartSensor for temperature management
  • Premium design and larger display
  • Integrated speaker for music and voice feedback

Cons:

  • Higher price point
  • Installation may take slightly longer due to additional features

Find out why homeowners love the ecobee3 Lite and ecobee Smart Thermostat on Amazon!

Final Verdict

The choice between the Ecobee3 Lite and the Ecobee Smart Thermostat ultimately depends on your priorities and budget:

  • Choose the Ecobee3 Lite if you’re looking for a reliable, cost-effective smart thermostat with basic functionality and optional upgrades. It’s perfect for first-time smart thermostat users or those on a tighter budget.
  • Choose the Ecobee Smart Thermostat if you’re willing to invest in a premium product with advanced features like built-in voice control, an occupancy sensor, and a sleek design. It’s an excellent choice for tech enthusiasts and homeowners aiming to create a fully integrated smart home.

No matter which model you choose, both Ecobee thermostats deliver exceptional performance, energy savings, and convenience, making them valuable additions to any modern home.

Click to check out the ecobee3 Lite or ecobee Smart Thermostat and upgrade your home today!

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