ecobee3 Smarter
Score: 84/100
Honeywell Home RTH9585WF1004
Score: 73/100Rankings
The ecobee3 Smarter thermostat provides a 3.5-inch color touchscreen and a suite of built-in sensors for precise climate control, along with broad 24 V HVAC compatibility and optional Power Extender Kit. It requires a C-wire or additional kit and uses older 2.4 GHz Wi-Fi, which may limit some setups. Best suited for users wanting multi-zone sensing and Apple ecosystem integration.
Honeywell Home RTH9585WF1004 offers a sleek full-color touchscreen and supports both Alexa and Google Assistant, backed by ENERGY STAR certification. It requires a C-wire and can suffer from temperature accuracy and occasional app glitches. Best suited for homeowners wanting a customizable display and multi-assistant integration at a moderate price.
| Attribute | | |
|---|---|---|
3 yearsbest | 1 years | |
3.5 inchbest | — | |
| ↓ lower better | 0.612 kg | 0.204 kgbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
General(2) | ||
HVAC Compatibility | ~95% of 24V systems (conventional 2H/2C, heat pump 4H/2C, gas/oil/electric/dual fuel, humidifier/dehumidifier/ventilator/HRV/ERV) | Forced air, hot water, steam, heat pumps |
Warranty (years) | 3 years | 1 years |
Connectivity(1) | ||
Smart Home Integration | Apple HomeKit, Amazon Alexa, Google Assistant | Alexa, Google Assistant, SmartThings, IFTTT |
Power & Installation(1) | ||
Power Source | 24 VAC | 24V |
Display(1) | ||
Display Type | color touchscreen | Full-color touchscreen |
Build & Design(2) | ||
Device Weight (kg) | 0.612 kg | 0.204 kg |
Device Dimensions (H×W×D) (mm) | 23.6×100.3×100.3 mm mm | 22×114×89 mm mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the Ecobee3 for its comprehensive sensor suite that enables smart recovery and precise humidity management, as well as its extensive HVAC compatibility that covers most 24V systems. They note its value for multi-zone comfort without a hub, while pointing out the need for a C-wire or Power Extender Kit and the lack of newer Wi-Fi standards compared to later models.
Everyday users praise the thermostat for its straightforward installation and reliable Wi-Fi control, especially appreciating the seamless Siri and HomeKit integration. The most common feedback revolves around occasional wiring difficulties in homes without a C-wire, but overall sentiment is highly positive.
“ease of install and Wi-Fi control”
“seamless Siri/HomeKit remote access”
Professional reviewers commend the Honeywell RTH9585WF1004 for its stylish, full-color display, easy integration with Alexa and Google Assistant, and its Smart Response learning that simplifies scheduling. They also highlight its ENERGY STAR rating and Demand Response capability as strong points for energy-conscious buyers, while noting its reliance on a C-wire as a potential limitation.
Everyday users appreciate the intuitive touchscreen, quick setup, reliable Wi-Fi control, and attractive customizable design. Common praise centers on energy-usage reports and voice-control convenience, whereas recurring complaints involve temperature accuracy, small size, occasional touchscreen lag, app instability, and Wi-Fi connectivity issues.
